Information about List Of Device Bandwidths
This is a list of device bandwidths: the channel capacity (or, more informally, bandwidth) of some computer devices employing methods of data transport is listed by kilobit/s (kbit/s), megabit/s (Mbit/s), or gigabit/s (Gbit/s) as appropriate. They are grouped by similar functionality, and then listed in order from lowest bandwidth to highest.
In addition, a common scale is used in order to better convey the magnitude of change to a non-technical person (for example: a 1.2 telephone modem versus a 10,000 kbit/s DSL modem). Whether to use bit/s or byte/s (B/s) is often a matter of convention. The most commonly cited unit (bit/s or byte/s) is bolded. In general, parallel interfaces are quoted in byte/s (B/s), serial in bit/s. On devices like modems, bytes may be more than 8 bits long because they may be individually padded out with additional start and stop bits; the figures below will reflect this. Where channels use line codes, such as Ethernet, Serial ATA and PCI Express, quoted speeds are for the decoded signal.
Many of these figures are theoretical maxima, and various real-world considerations will generally keep the actual effective throughput much lower. The actual throughput achievable on Ethernet networks, for example (especially when heavily loaded or when running over substandard media), is debatable. The figures are also simplex speeds, which may conflict with the duplex speeds vendors sometimes use in promotional materials.
All of the figures listed here are true metric quantities and not binary prefixes (1 kilobit, for example, is 1000 bits, not 1024 bits). Similarly, kB, MB, GB mean kilobytes, megabytes, gigabytes, not kibibytes, mebibytes, gibibytes.
In addition, a common scale is used in order to better convey the magnitude of change to a non-technical person (for example: a 1.2 telephone modem versus a 10,000 kbit/s DSL modem). Whether to use bit/s or byte/s (B/s) is often a matter of convention. The most commonly cited unit (bit/s or byte/s) is bolded. In general, parallel interfaces are quoted in byte/s (B/s), serial in bit/s. On devices like modems, bytes may be more than 8 bits long because they may be individually padded out with additional start and stop bits; the figures below will reflect this. Where channels use line codes, such as Ethernet, Serial ATA and PCI Express, quoted speeds are for the decoded signal.
Many of these figures are theoretical maxima, and various real-world considerations will generally keep the actual effective throughput much lower. The actual throughput achievable on Ethernet networks, for example (especially when heavily loaded or when running over substandard media), is debatable. The figures are also simplex speeds, which may conflict with the duplex speeds vendors sometimes use in promotional materials.
All of the figures listed here are true metric quantities and not binary prefixes (1 kilobit, for example, is 1000 bits, not 1024 bits). Similarly, kB, MB, GB mean kilobytes, megabytes, gigabytes, not kibibytes, mebibytes, gibibytes.
| CONNECTION | BITS | BYTES |
|---|---|---|
TTY/Teleprinter or Telecommunications device for the deaf | ||
| TTY (V.18) | 0.045 kbit/s[1] | 6 characters/sec |
| TTY (V.18) | 0.050 kbit/s | 6.6 characters/sec |
| NTSC Line 21 Closed Captioning | 1 kbit/s | 0.1 kB/s (~100 cps) |
ModemsNote that the values given are maximum values, and actual values may be slower under certain conditions (for example, noisy phone lines). [2] | ||
| Modem 110 baud | 0.11 kbit/s | 0.010 kB/s (~10 cps)[3] |
| Modem Bell 103 (Bell 103) | 0.3 kbit/s | 0.03 kB/s (~30 cps)[3] |
| Modem 300 baud (V.21) | 0.3 kbit/s | 0.03 kB/s (~30 cps)[3] |
| Modem 1200 (600 baud) (V.22) | 1.2 kbit/s | 0.12 kB/s (~120 cps)[3] |
| Modem Bell 212A (Bell 212A) | 1.2 kbit/s | 0.12 kB/s[3] |
| Modem 2400 (1200 baud) (V.22bis) | 2.4 kbit/s | 0.24 kB/s[3] |
| Modem 4800 (1600 baud) (V.27ter) | 4.8 kbit/s | 0.48 kB/s[3] |
| Modem 9600 (2400 baud) (V.32) | 9.6 kbit/s | 0.96 kB/s[3] |
| Modem 14.4 (2400 baud) (V.32bis) | 14.4 kbit/s | 1.44 kB/s[3] |
| Modem 19.2 (2400 baud) (V.34) | 19.2 kbit/s | 1.92 kB/s[3] |
| Modem 28.8 (3200 baud) (V.34) | 28.8 kbit/s | 2.88 kB/s[3] |
| Modem 33.6 (3429 baud) (V.34) | 33.8 kbit/s | 3.38 kB/s[3] |
| Modem 56k (3429 baud) (V.90) (analog upstream) | 33.6 kbit/s[4] | 3.36 kB/s[3] |
| Modem 56k (8000 baud) (V.92) (digital upstream) | 48.0 kbit/s<ref name="56k" /> | 4.8 kB/s[3] |
| Modem 56k (8000 baud) (V.90/V.92) (digital downstream) | 56.0 kbit/s<ref name="56k" /> | 5.6 kB/s[3] |
| ADSL upstream | 1024 kbit/s | 128 kB/s |
| ADSL[5] downstream | 8000 kbit/s | 1000 kB/s |
| ADSL2 upstream | 3500 kbit/s | 448 kB/s |
| ADSL2 downstream | 12,000 kbit/s | 1500 kB/s |
| ADSL2Plus upstream | 3500 kbit/s | 448 kB/s |
| ADSL2Plus downstream | 24,000 kbit/s | 3000 kB/s |
| DOCSIS v1.0[6] (Cable modem) upstream | 10,000 kbit/s | 1250 kB/s |
| DOCSIS v1.0 (Cable modem) downstream | 38,000 kbit/s | 4750 kB/s |
| DOCSIS v2.0[7] (Cable modem) upstream | 30,000 kbit/s | 3750 kB/s |
| DOCSIS v2.0 (Cable modem) downstream | 40,000 kbit/s | 5000 kB/s |
| DOCSIS v3.0[8] (Cable modem) upstream | 120,000 kbit/s | 15,000 kB/s |
| DOCSIS v3.0 (Cable modem) downstream | 160,000 kbit/s | 20,000 kB/s |
ISDN | ||
| ISDN Basic Rate Interface (BRI) data channel (B-channel) | 64 kbit/s[9] | 8 kB/s |
| ISDN Basic Rate Interface (BRI) signalling channel (D-channel) | 16 kbit/s[9] | 2 kB/s |
| Each ISDN Primary Rate Interface (PRI) data channel (B-channel) | 64 kbit/s[9] | 8 kB/s |
| ISDN Primary Rate Interface (PRI) signalling channel (D-channel) | 64 kbit/s[9] | 8 kB/s |
Mobile telephone interfacesNote that the values given are maximum values, and actual values may be slower under certain conditions (for example, noise). | ||
| GSM CSD | 14.4 kbit/s | 1.8 kB/s |
| HSCSD upstream | 14.4 kbit/s | 1.8 kB/s |
| HSCSD downstream | 43.2 kbit/s | 5.4 kB/s |
| GPRS upstream | 28.8 kbit/s | 3.6 kB/s |
| GPRS downstream | 57.6 kbit/s | 7.2 kB/s |
| WiDEN | 100 kbit/s | 12.5 kB/s |
| EDGE downstream | 236.8 kbit/s | 29.6 kB/s |
| UMTS downstream | 384 kbit/s | 48 kB/s |
| HSDPA downstream | 14,400 kbit/s | 1800 kB/s |
| HSUPA upstream | 5760 kbit/s | 720 kB/s |
| HSOPA downstream | 100,000 kbit/s | 12,500 kB/s |
| CDMA2000 1xRTT downstream | 153 kbit/s | 18 kB/s |
| CDMA2000 1xRTT upstream | 153 kbit/s | 18 kB/s |
| 1xEV-DO Rev. 0 downstream | 2457 kbit/s | 307.2 kB/s |
| 1xEV-DO Rev. 0 upstream | 153 kbit/s | 19 kB/s |
| 1xEV-DO Rev. A downstream | 3100 kbit/s | 396.8 kB/s |
| 1xEV-DO Rev. A upstream | 1800 kbit/s | 230.4 kB/s |
| 1xEV-DO Rev. B downstream | 73,500 kbit/s | 9200 kB/s |
| 1xEV-DO Rev. B upstream | 14,700 kbit/s | 1800 kB/s |
| 1xEV-DO Rev. C downstream | 280,000 kbit/s | 35,000 kB/s |
| 1xEV-DO Rev. C upstream | 75,000 kbit/s | 9000 kB/s |
Wireless device connection | ||
| IrDA-Control | 72 kbit/s | 9 kB/s |
| IrDA-SIR | 115.2 kbit/s | 14 kB/s |
| 802.15.4 (2.4 GHz) | 250 kbit/s | 31.25 kB/s |
| Bluetooth 1.1 | 1000 kbit/s | 125 kB/s |
| Bluetooth 2.0+EDR | 3000 kbit/s | 375 kB/s |
| IrDA-FIR | 4000 kbit/s | 510 kB/s |
| IrDA-VFIR | 16,000 kbit/s | 2000 kB/s |
| WUSB-UWB | 480,000 kbit/s | 60,000 kB/s |
Computer buses | ||
| ISA 8-Bit/4.77 MHz[10] | 9.6 Mbit/s | 1.2 MB/s |
| Zorro II 16-Bit/7.14 MHz[11] | 28.56 Mbit/s | 3.56 MB/s |
| ISA 16-Bit/8.33 MHz<ref name="ISA" /> | 42.4 Mbit/s | 5.3 MB/s |
| Low Pin Count | 133.33 Mbit/s | 16.67 MB/s |
| HP-Precision Bus | 184 Mbit/s | 23 MB/s |
| EISA 8-16-32bits/8.33 MHz | 320 Mbit/s | 32 MB/s |
| VME64 32-64bits | 400 Mbit/s | 40 MB/s |
| NuBus 10 MHz | 400 Mbit/s | 40 MB/s |
| DEC TURBOchannel 32-bit/12.5 MHz | 400 Mbit/s | 50 MB/s |
| MCA 16-32bits/10 MHz | 660 Mbit/s | 66 MB/s |
| NuBus90 20 MHz | 800 Mbit/s | 80 MB/s |
| Sbus 32-bit/25 MHz | 800 Mbit/s | 100 MB/s |
| DEC TURBOchannel 32-bit/25 MHz | 800 Mbit/s | 100 MB/s |
| VLB 32-bit/33 MHz | 1067 Mbit/s | 133.33 MB/s |
| PCI 32-bit/33 MHz | 1067 Mbit/s | 133.33 MB/s |
| HP GSC-1X | 1136 Mbit/s | 142 MB/s |
| Sbus 64-bit/25 MHz | 1600 Mbit/s | 200 MB/s |
| PCI Express (x1 link)[12] | 2000 Mbit/s | 250 MB/s |
| HP GSC-2X | 2048 Mbit/s | 256 MB/s |
| PCI 64-bit/33 MHz | 2133 Mbit/s | 266.7 MB/s |
| PCI 32-bit/66 MHz | 2133 Mbit/s | 266.7 MB/s |
| AGP 1x | 2133 Mbit/s | 266.7 MB/s |
| PCI Express (x2 link)<ref name="pci-e" /> | 4000 Mbit/s | 500 MB/s |
| AGP 2x | 4267 Mbit/s | 533.3 MB/s |
| PCI 64-bit/66 MHz | 4266 Mbit/s | 533.3 MB/s |
| PCI-X DDR 16-bit | 4266 Mbit/s | 533.3 MB/s |
| PCI 64-bit/100 MHz | 6399 Mbit/s | 800 MB/s |
| PCI Express (x4 link)<ref name="pci-e" /> | 8000 Mbit/s | 1000 MB/s |
| AGP 4x | 8533 Mbit/s | 1067 MB/s |
| PCI-X 133 | 8533 Mbit/s | 1067 MB/s |
| PCI-X QDR 16-bit | 8533 Nbit/s | 1067 MB/s |
| InfiniBand single 4X[13] | 8000 Mbit/s | 1000 MB/s |
| UPA | 15,360 Mbit/s | 1920 MB/s |
| PCI Express (x8 link)<ref name="pci-e" /> | 16,000 Mbit/s | 2000 MB/s |
| AGP 8x | 17,066 Mbit/s | 2133 MB/s |
| PCI-X DDR | 17,066 Mbit/s | 2133 MB/s |
| HyperTransport (800 MHz, 16-pair) | 25,600 Mbit/s | 3200 MB/s |
| HyperTransport (1 GHz, 16-pair) | 32,000 Mbit/s | 4000 MB/s |
| PCI Express (x16 link)<ref name="pci-e" /> | 32,000 Mbit/s | 4000 MB/s |
| PCI-X QDR | 34,133 Mbit/s | 4266 MB/s |
| AGP 8x 64-bit | 34,133 Mbit/s | 4266 MB/s |
| PCI Express (x32 link)<ref name="pci-e" /> | 64,000 Mbit/s | 8000 MB/s |
| PCI Express 2.0 (x16 link)[14] | 64,000 Mbit/s | 8000 MB/s |
| PCI Express 2.0 (x32 link)<ref name="pci-e2" /> | 128,000 Mbit/s | 16,000 MB/s |
| HyperTransport (2.8 GHz, 32-pair) | 179,200 Mbit/s | 22,400 MB/s |
Computer buses (storage) | ||
| PC Floppy Disk Controller (1.44MB) | 0.5 Mbit/s | 0.062 MB/s |
| CD Controller (1x) | 1.2 Mbit/s | 0.15 MB/s |
| DVD Controller (1x) | 11.1 Mbit/s | 1.32 Mb/s |
| PIO Mode 0 | 26.4 Mbit/s | 3.3 MB/s |
| SCSI 1 (5 MHz) | 40 Mbit/s | 5 MB/s |
| PIO Mode 1 | 41.6 Mbit/s | 5.2 MB/s |
| PIO Mode 2 | 66.4 Mbit/s | 8.3 MB/s |
| Fast SCSI 2 (8 bits/10 MHz) | 80 Mbit/s | 10 MB/s |
| PIO Mode 3 | 88.8 Mbit/s | 11.1 MB/s |
| PIO Mode 4 | 133.3 Mbit/s | 16.7 MB/s |
| Fast Wide SCSI 2 (16 bits/10 MHz) | 160 Mbit/s | 20 MB/s |
| Ultra DMA ATA 33 | 264 Mbit/s | 33 MB/s |
| Ultra Wide SCSI 40 (16 bits/20 MHz) | 320 Mbit/s | 40 MB/s |
| Ultra DMA ATA 66 | 528 Mbit/s | 66 MB/s |
| Ultra-2 wide SCSI 80 (16 bits/40 MHz) | 640 Mbit/s | 80 MB/s |
| Serial Storage Architecture SSA | 640 Mbit/s | 80 MB/s |
| Ultra DMA ATA 100 | 800 Mbit/s | 100 MB/s |
| Fibre Channel 1GFC (1.0625 GHz)[15] | 850 Mbit/s | 106.25 MB/s |
| Ultra DMA ATA 133 | 1064 Mbit/s | 133 MB/s |
| Serial ATA (SATA-150)[16] | 1200 Mbit/s | 150 MB/s |
| Ultra-3 SCSI 160 (16 bits/40 MHz DDR) | 1280 Mbit/s | 160 MB/s |
| Fibre Channel 2GFC (2.125 GHz)[16] | 1700 Mbit/s | 212.5 MB/s |
| Serial ATA (SATA-300)[16] | 2400 Mbit/s | 300 MB/s |
| Ultra-320 SCSI (16 bits/80 MHz DDR) | 2560 Mbit/s | 320 MB/s |
| Serial Attached SCSI (SAS)[16] | 3000 Mbit/s | 375 MB/s |
| Fibre Channel 4GFC (4.25 GHz)[16] | 3400 Mbit/s | 425 MB/s |
| Serial ATA (SATA-600) (Not yet implemented)[16] | 4800 Mbit/s | 600 MB/s |
| Ultra-640 SCSI (16 bits/160 MHz DDR) (Not yet implemented) | 5120 Mbit/s | 640 MB/s |
| Serial Attached SCSI 2 (Not yet implemented)[16] | 6000 Mbit/s | 750 MB/s |
Computer buses (external) | ||
| Apple Desktop Bus | 0.010 Mbit/s | 0.00125 MB/s |
| MIDI | 0.0313 Mbit/s | 0.0039 MB/s |
| Serial RS-232 max | 0.2304 Mbit/s | 0.0288 MB/s |
| Parallel (Centronics) CPP ~133 kHz | 1 Mbit/s | 0.133 MB/s |
| USB Low Speed (USB 1.0) | 1.536 Mbit/s | 0.192 MB/s |
| Serial RS-422 max | 10 Mbit/s | 1.25 MB/s |
| USB Full Speed (USB 1.1) | 12 Mbit/s | 1.5 MB/s |
| Parallel (Centronics) EPP 2 MHz | 16 Mbit/s | 2 MB/s |
| FireWire (IEEE 1394) 100 | 98.304 Mbit/s | 12.288 MB/s |
| FireWire (IEEE 1394) 200 | 196.608 Mbit/s | 24.576 MB/s |
| FireWire (IEEE 1394) 400 | 393.216 Mbit/s | 49.152 MB/s |
| USB Hi-Speed (USB 2.0) | 480 Mbit/s | 60 MB/s |
| FireWire (IEEE 1394b) 800[17] | 786.432 Mbit/s | 98.304 MB/s |
| FireWire (IEEE 1394b) 1600[17] | 1573 Mbit/s | 196.6 MB/s |
| Cameralink base 24bit 85 MHz[18] | 2040 Mbit/s | 261.12 MB/s |
| eSATA (SATA 300) | 2400 Mbit/s | 300 MB/s |
| FireWire (IEEE 1394b) 3200[17] | 3145.7 Mbit/s | 393.216 MB/s |
| USB 3.0 (Planned) | 4800 Mbit/s | 600 MB/s |
Computer buses (MAC to PHY) | ||
| XGMII (32 Lanes) | 10.0 Gbit/s | 1.25 GB/s |
| XAUI (4 Lanes) | 12.5 Gbit/s | 1.5625 GB/s |
Computer buses (PHY to XPDR) | ||
| XSBI (16 Lanes) | 0.995 Gbit/s | 0.124 GB/s |
Wide area networkNote that the values given are maximum values, and actual values may be slower under certain conditions (for example, noise). | ||
| DS0 | 0.064 Mbit/s | 0.008 MB/s |
| Satellite Internet upstream | 1 Mbit/s | 0.128 MB/s |
| Satellite Internet[19] downstream | 16 Mbit/s | 2 MB/s |
| Frame Relay[20] | 2 Mbit/s | 0.25 MB/s |
| G.SHDSL | 2.304 Mbit/s | 0.288 MB/s |
| SDSL | 4.608 Mbit/s | 0.576 MB/s |
| G.Lite (aka ADSL Lite) upstream | 0.512 Mbit/s | 0.064 MB/s |
| G.Lite (aka ADSL Lite) downstream | 1.5 Mbit/s | 0.192 MB/s |
| ADSL upstream | 1.024 Mbit/s | 0.128 MB/s |
| ADSL[21] downstream | 8 Mbit/s | 1 MB/s |
| ADSL2 upstream | 3.5 Mbit/s | 0.448 MB/s |
| ADSL2 downstream | 12 Mbit/s | 1.5 MB/s |
| ADSL2Plus upstream | 3.5 Mbit/s | 0.448 MB/s |
| ADSL2Plus downstream | 24 Mbit/s | 3 MB/s |
| DOCSIS v1.0<ref name="DOCSIS 10" /> (Cable modem) upstream | 10 Mbit/s | 1.25 MB/s |
| DOCSIS v1.0 (Cable modem) downstream | 38 Mbit/s | 4.75 MB/s |
| DOCSIS v2.0<ref name="DOCSIS 20" /> (Cable modem) upstream | 30 Mbit/s | 3.75 MB/s |
| DOCSIS v2.0 (Cable modem) downstream | 40 Mbit/s | 5 MB/s |
| DOCSIS v3.0<ref name="DOCSIS 30" /> (Cable modem) upstream | 120 Mbit/s | 15 MB/s |
| DOCSIS v3.0 (Cable modem) downstream | 160 Mbit/s | 20 MB/s |
| Satellite Internet/DS1/T1 | 1.544 Mbit/s | 0.192 MB/s |
| E1 | 2.048 Mbit/s | 0.256 MB/s |
| T2 | 6.312 Mbit/s | 0.789 MB/s |
| E2 | 8.448 Mbit/s | 1.056 MB/s |
| E3 | 34.368 Mbit/s | 4.296 MB/s |
| DS3/T3 ('45 Meg') | 44.736 Mbit/s | 5.5925 MB/s |
| STS-1/EC-1/OC-1/STM-0 | 51.84 Mbit/s | 6.48 MB/s |
| VDSL (symmetry optional) | 100 Mbit/s | 12.5 MB/s |
| VDSL2 (symmetry optional) | 250 Mbit/s | 31.25 MB/s |
| LR-VDSL2 (4 to 5 km [long-]range) (symmetry optional) | 4 Mbit/s | 0.512 MB/s |
| OC-1 | 51.84 Mbit/s | 6.48 MB/s |
| OC-3/STM-1 | 155.52 Mbit/s | 19.44 MB/s |
| T4 | 274.176 Mbit/s | 34.272 MB/s |
| T5 | 400.352 Mbit/s | 50.044 MB/s |
| OC-9 | 466.56 Mbit/s | 58.32 MB/s |
| OC-12/STM-4 | 622.08 Mbit/s | 77.76 MB/s |
| OC-18 | 933.12 Mbit/s | 116.64 MB/s |
| OC-24 | 1244 Mbit/s | 155.5 MB/s |
| OC-36 | 1900 Mbit/s | 237.5 MB/s |
| OC-48/STM-16 | 2488 Mbit/s | 311.04 MB/s |
| OC-96 | 4976 Mbit/s | 622 MB/s |
| OC-192/STM-64 | 9953 Mbit/s | 1244 MB/s |
| 10 Gigabit Ethernet WAN PHY | 9953 Mbit/s | 1244 MB/s |
| 10 Gigabit Ethernet LAN PHY | 10,000 Mbit/s | 1250 MB/s |
| OC-256 | 13,271 Mbit/s | 1659 MB/s |
| OC-768/STM-256 | 39,813 Mbit/s | 4976 MB/s |
| OC-1536/STM-512 | 79,626 Mbit/s | 9953 MB/s |
| OC-3072/STM-1024 | 159,252 Mbit/s | 19,907 MB/s |
Local area network | ||
| LocalTalk | 0.230 Mbit/s | 0.0288 MB/s |
| Econet | 0.800 Mbit/s | 0.1 MB/s |
| ARCNET (Standard) | 2.5 Mbit/s | 0.3125 MB/s |
| Ethernet Experimental | 3 Mbit/s | 0.375 MB/s |
| Token Ring (Original) | 4.16 Mbit/s | 0.52 MB/s |
| Ethernet (10base-X) | 10 Mbit/s | 1.25 MB/s |
| Token Ring (Later) | 16 Mbit/s | 2 MB/s |
| Token Ring (Later) | 100 Mbit/s | 12.5 MB/s |
| Fast Ethernet (100base-X) | 100 Mbit/s | 12.5 MB/s |
| FDDI | 100 Mbit/s | 12.5 MB/s |
| Token Ring (Later) | 1000 Mbit/s | 125 MB/s |
| Gigabit Ethernet (1000base-X) | 1000 Mbit/s | 125 MB/s |
| Myrinet 2000 | 2000 Mbit/s | 250 MB/s |
| Infiniband 1X<ref name="infiniband" /> | 2000 Mbit/s | 250 MB/s |
| 10 gigabit Ethernet (10Gbase-X) | 10,000 Mbit/s | 1250 MB/s |
| Myri 10G | 10,000 Mbit/s | 1250 MB/s |
| Infiniband 4X<ref name="infiniband" /> | 8,000 Mbit/s | 1000 MB/s |
| Scalable Coherent Interconnect (SCI) Dual Channel SCI, x8 PCIe | 20,000 Mbit/s | 2500 MB/s |
| Infiniband 12X<ref name="infiniband" /> | 24,000 Mbit/s | 3000 MB/s |
| 100 gigabit Ethernet (100Gbase-X) | 100,000 Mbit/s | 12,500 MB/s |
| 802.11 legacy 0.125 | 2.0 Mbit/s | 0.25 MB/s |
| RONJA free space optical wireless | 10.0 Mbit/s | 1.25 MB/s |
| 802.11b DSSS 0.125 | 11.0 Mbit/s | 1.375 MB/s |
| 802.11b+ non-standard DSSS 0.125 | 44.0 Mbit/s | 5.5 MB/s |
| 802.11a 0.75 | 54.0 Mbit/s | 6.75 MB/s |
| 802.11g DSSS 0.125 | 54.0 Mbit/s | 6.75 MB/s |
| 802.16 (WiMAX) | 70.0 Mbit/s | 8.75 MB/s |
| 802.11n | 540.0 Mbit/s | 67.5 MB/s |
Memory Interconnect Buses / RAM | ||
| FPM DRAM | 1.408 Gbit/s | 0.176 GB/s |
| EDO DRAM | 2.112 Gbit/s | 0.264 GB/s |
| SPARC MBus | 2.55 Gbit/s | 0.32 GB/s |
| PC66 SDRAM | 4.264 Gbit/s | 0.533 GB/s |
| PC100 SDRAM | 6.4 Gbit/s | 0.8 GB/s |
| HP Runway bus 125 MHz 64-bit | 6.4 Gbit/s | 0.8 GB/s |
| PC133 SDRAM | 8.528 Gbit/s | 1.066 GB/s |
| PC800 RDRAM (single-channel) | 12.8 Gbit/s | 1.6 GB/s |
| PC1600 DDR-SDRAM (single channel) | 12.8 Gbit/s | 1.6 GB/s |
| HP Runway bus 125 MHz 64-bit DDR | 16 Gbit/s | 2 GB/s |
| PC1066 RDRAM (single-channel) | 16.8 Gbit/s | 2.1 GB/s |
| PC2100 DDR-SDRAM (single channel) | 16.8 Gbit/s | 2.1 GB/s |
| PC1200 RDRAM (single-channel) | 19.2 Gbit/s | 2.4 GB/s |
| PC2700 DDR-SDRAM (single channel) | 21.6 Gbit/s | 2.7 GB/s |
| PC800 RDRAM (dual-channel) | 25.6 Gbit/s | 3.2 GB/s |
| PC1600 DDR-SDRAM (dual channel) | 25.6 Gbit/s | 3.2 GB/s |
| PC3200 DDR-SDRAM (single channel) | 25.6 Gbit/s | 3.2 GB/s |
| PC2-3200 DDR2-SDRAM (single channel) | 25.6 Gbit/s | 3.2 GB/s |
| PC1066 RDRAM (dual-channel) | 33.6 Gbit/s | 4.2 GB/s |
| PC2100 DDR-SDRAM (dual channel) | 33.6 Gbit/s | 4.2 GB/s |
| PC2-4200 DDR2-SDRAM (single channel) | 34.136 Gbit/s | 4.267 GB/s |
| PC4000 DDR-SDRAM (single channel) | 34.3 Gbit/s | 4.287 GB/s |
| PC1200 RDRAM (dual-channel) | 38.4 Gbit/s | 4.8 GB/s |
| PC2-5300 DDR2-SDRAM (single channel) | 42.4 Gbit/s | 5.3 GB/s |
| PC2-5400 DDR2-SDRAM (single channel) | 42.664 Gbit/s | 5.333 GB/s |
| PC2700 DDR-SDRAM (dual channel) | 43.2 Gbit/s | 5.4 GB/s |
| PC3200 DDR-SDRAM (dual channel) | 51.2 Gbit/s | 6.4 GB/s |
| PC2-3200 DDR2-SDRAM (dual channel) | 51.2 Gbit/s | 6.4 GB/s |
| PC2-6400 DDR2-SDRAM (single channel) | 51.2 Gbit/s | 6.4 GB/s |
| PC3-6400 DDR3-SDRAM (single channel) | 51.2 Gbit/s | 6.4 GB/s |
| Itanium zx1 bus | 51.2 Gbit/s | 6.4 GB/s |
| PC3-8500 DDR3-SDRAM (single channel) | 68.24 Gbit/s | 8.53 GB/s |
| PC2-4200 DDR2-SDRAM (dual channel) | 68.272 Gbit/s | 8.534 GB/s |
| PC4000 DDR-SDRAM (dual channel) | 68.6 Gbit/s | 8.575 GB/s |
| PC2-5300 DDR2-SDRAM (dual channel) | 84.8 Gbit/s | 10.6 GB/s |
| PC2-5400 DDR2-SDRAM (dual channel) | 85.328 Gbit/s | 10.666 GB/s |
| PC3-10600 DDR3-SDRAM (single channel) | 85.36 Gbit/s | 10.67 GB/s |
| PC2-6400 DDR2-SDRAM (dual channel) | 102.4 Gbit/s | 12.8 GB/s |
| PC3-12800 DDR3-SDRAM (single channel) | 102.4 Gbit/s | 12.8 GB/s |
| PC2-8000 DDR2-SDRAM (dual channel) | 128.0 Gbit/s | 16.0 GB/s |
| PC2-8800 DDR2-SDRAM (dual channel) | 140.8 Gbit/s | 17.6 GB/s |
| PC2-10000 DDR2-SDRAM (dual channel) | 160.0 Gbit/s | 20.0 GB/s |
See also
Notes
1. ^ TTY uses a Baudot code, not ASCII. This uses 5 bits per character instead of 8, plus one start and 1.5 stop bits (7.5 total bits per character sent).
2. ^ [1]
3. ^ 300 baud modems operating at 30 characters per second, were often described as "reading speed" since the characters scrolled across the screen at the same rate as most people can read. All modems are assumed to be in serial operation with 1 start bit, 8 data bits, no parity, and 1 stop bit (2 stop bits for 110-baud modems). Therefore, a total of 10 bits (11 bits for 110-baud modems) are needed to transmit each 8-bit byte. The "bytes" column reflects the net data transfer rate after the protocol overhead has been removed.
4. ^ 56K modems: V.90 and V.92 capacity can only be achieved when the upstream (service provider) end of the connection is digital. In addition, certain telecommunications administrations limit the signal strength the modem can transmit onto the telecommunications circuit, which in turn limits the actual maximum data rate to less than the theoretical maximum. In the USA, this limited the possible downstream maximum to 53.3 kbit/s.
5. ^ ADSL connections will vary in throughput from 64 kbit/s to several Mbit/s depending on configuration. Most are commonly below 2 Mbit/s. Some ADSL and SDSL connections have a higher bandwidth than T1 but their bandwidth is not guaranteed, and will drop when the system gets overloaded, whereas the T1 type connections are usually guaranteed and have no contention ratios.
6. ^ DOCSIS 1.0 includes technology which first became available around 1995-1996, and has since become very widely deployed. DOCSIS 1.1 introduces some security improvements and Quality-of-Service (QoS).
7. ^ DOCSIS 2.0 specifications provide increased upstream throughput for symmetric services.
8. ^ DOCSIS 3.0 is currently in development by the CableLabs consortium and is slated to include support for channel bonding and IPv6.
9. ^ Note that effective aggregate bandwidth for an ISDN installation is typically higher than the rates shown for a single channel due to the use of multiple channels. A basic rate interface (BRI) provides 2 "B" channels and one "D" channel. Each B channel provides 64 kbit/s bandwidth and the 'D' channel carries signalling (call setup) information. B channels can be bonded to provide a 128 kbit/s data rate. Primary rate interfaces (PRI) vary depending on whether the region uses E1 (Europe, world) or T1 (North America) bearers. In E1 regions, the PRI carries 30 B-channels and 1 D-channel; in T1 regions the PRI carries 23 B-channels and 1 D-channel. The D-channel has different bandwidth on the two interfaces.
10. ^ [2]
11. ^ The Zorro II bus use 4 clocks per 16-Bit of data transferred. See the Zorro III technical specification for more information.
12. ^ Note that PCI Express lanes use an 8B/10B encoding scheme.
13. ^ Note that the InfiniBand performance figures, following standard practice, are given as full-duplex combined (or "aggregated") speeds, which effectively doubles InfiniBand's numbers as compared to the simplex numbers usually quoted for other standards. InfiniBand uses an 8B/10B encoding scheme.
14. ^ PCIe 2.0 effectively doubles the bus standard's bandwidth from 2.5 Gbit/s to 5 Gbit/s
15. ^ Fibre Channel 1GFC, 2GFC, 4GFC use an 8B/10B encoding scheme. Fibre Channel 10GFC, which uses a 64B/66B encoding scheme, is not compatible with 1GFC, 2GFC and 4GFC, and is used only to interconnect switches.
16. ^ SATA and SAS use an 8B/10B encoding scheme.
17. ^ FireWire (IEEE 1394b) uses an 8B/10B coding scheme.
18. ^ "Getting Camera Link specs right", Steve Scheiber, Test & Measurement World, May 22, 2006. Retrieved 2007-09-28.
19. ^ Satellite internet may have a high bandwidth but also has a high latency due to the distance between the modem, satellite and hub. One-way satellite connections exist where all the downstream traffic is handled by satellite and the upstream traffic by land-based connections such as 56K modems and ISDN.
20. ^ Actual frame relay connections will vary in throughput from 8 kbit/s to 45 Mbit/s depending on configuration. Most are commonly below 2 Mbit/s.
21. ^ ADSL connections will vary in throughput from 64 kbit/s to several Mbit/s depending on configuration. Most are commonly below 2 Mbit/s. Some ADSL & SDSL connections have a higher bandwidth than T1 but their bandwidth is not guaranteed, and will drop when the system gets overloaded where as the T1 type connections are usually guaranteed and have no contention ratios.
2. ^ [1]
3. ^ 300 baud modems operating at 30 characters per second, were often described as "reading speed" since the characters scrolled across the screen at the same rate as most people can read. All modems are assumed to be in serial operation with 1 start bit, 8 data bits, no parity, and 1 stop bit (2 stop bits for 110-baud modems). Therefore, a total of 10 bits (11 bits for 110-baud modems) are needed to transmit each 8-bit byte. The "bytes" column reflects the net data transfer rate after the protocol overhead has been removed.
4. ^ 56K modems: V.90 and V.92 capacity can only be achieved when the upstream (service provider) end of the connection is digital. In addition, certain telecommunications administrations limit the signal strength the modem can transmit onto the telecommunications circuit, which in turn limits the actual maximum data rate to less than the theoretical maximum. In the USA, this limited the possible downstream maximum to 53.3 kbit/s.
5. ^ ADSL connections will vary in throughput from 64 kbit/s to several Mbit/s depending on configuration. Most are commonly below 2 Mbit/s. Some ADSL and SDSL connections have a higher bandwidth than T1 but their bandwidth is not guaranteed, and will drop when the system gets overloaded, whereas the T1 type connections are usually guaranteed and have no contention ratios.
6. ^ DOCSIS 1.0 includes technology which first became available around 1995-1996, and has since become very widely deployed. DOCSIS 1.1 introduces some security improvements and Quality-of-Service (QoS).
7. ^ DOCSIS 2.0 specifications provide increased upstream throughput for symmetric services.
8. ^ DOCSIS 3.0 is currently in development by the CableLabs consortium and is slated to include support for channel bonding and IPv6.
9. ^ Note that effective aggregate bandwidth for an ISDN installation is typically higher than the rates shown for a single channel due to the use of multiple channels. A basic rate interface (BRI) provides 2 "B" channels and one "D" channel. Each B channel provides 64 kbit/s bandwidth and the 'D' channel carries signalling (call setup) information. B channels can be bonded to provide a 128 kbit/s data rate. Primary rate interfaces (PRI) vary depending on whether the region uses E1 (Europe, world) or T1 (North America) bearers. In E1 regions, the PRI carries 30 B-channels and 1 D-channel; in T1 regions the PRI carries 23 B-channels and 1 D-channel. The D-channel has different bandwidth on the two interfaces.
10. ^ [2]
11. ^ The Zorro II bus use 4 clocks per 16-Bit of data transferred. See the Zorro III technical specification for more information.
12. ^ Note that PCI Express lanes use an 8B/10B encoding scheme.
13. ^ Note that the InfiniBand performance figures, following standard practice, are given as full-duplex combined (or "aggregated") speeds, which effectively doubles InfiniBand's numbers as compared to the simplex numbers usually quoted for other standards. InfiniBand uses an 8B/10B encoding scheme.
14. ^ PCIe 2.0 effectively doubles the bus standard's bandwidth from 2.5 Gbit/s to 5 Gbit/s
15. ^ Fibre Channel 1GFC, 2GFC, 4GFC use an 8B/10B encoding scheme. Fibre Channel 10GFC, which uses a 64B/66B encoding scheme, is not compatible with 1GFC, 2GFC and 4GFC, and is used only to interconnect switches.
16. ^ SATA and SAS use an 8B/10B encoding scheme.
17. ^ FireWire (IEEE 1394b) uses an 8B/10B coding scheme.
18. ^ "Getting Camera Link specs right", Steve Scheiber, Test & Measurement World, May 22, 2006. Retrieved 2007-09-28.
19. ^ Satellite internet may have a high bandwidth but also has a high latency due to the distance between the modem, satellite and hub. One-way satellite connections exist where all the downstream traffic is handled by satellite and the upstream traffic by land-based connections such as 56K modems and ISDN.
20. ^ Actual frame relay connections will vary in throughput from 8 kbit/s to 45 Mbit/s depending on configuration. Most are commonly below 2 Mbit/s.
21. ^ ADSL connections will vary in throughput from 64 kbit/s to several Mbit/s depending on configuration. Most are commonly below 2 Mbit/s. Some ADSL & SDSL connections have a higher bandwidth than T1 but their bandwidth is not guaranteed, and will drop when the system gets overloaded where as the T1 type connections are usually guaranteed and have no contention ratios.
External links
- Interconnection Speeds Compared
- Need for Speed: Theoretical Bandwidth Comparison — Contains a graph illustrating bandwidth speeds
In electrical engineering and computer science, channel capacity is the tightest upper bound on the amount of information that can be reliably transmitted over a communications channel.
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Bandwidth is the difference between the upper and lower cutoff frequencies of, for example, a filter, a communication channel, or a signal spectrum, and is typically measured in hertz.
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kilobit per second (kbit/s or kb/s or kbps) is a unit of data transfer rate equal to 1,000 bits per second. It is sometimes mistakenly thought to mean 1,024 bits per second, using the binary meaning of the kilo- prefix, though this is incorrect.
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megabit per second (abbreviated as Mbit/s, Mbps, or mbps) is a unit of data transfer rate equal to 1,000,000 bits per second. Because there are 8 bits in a byte, a transfer speed of 8 megabits per second (8 Mbps) is equivalent to 1,000,000 bytes
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bitrate (sometimes written bit rate, data rate or as a variable R or fb) is the number of bits that are conveyed or processed per unit of time. Bit rate is synonymous to data rate and digital bandwidth.
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In telecommunications and computer science, parallel communications is a method of sending several data signals over a communication link at one time. It contrasts with serial communication; this distinction is one way of several ways of characterizing a communications channel.
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In telecommunications and computer science, serial communications is the process of sending data one bit at one time, sequentially, over a communications channel or computer bus. This is in contrast to parallel communications, where all the bits of each symbol are sent together.
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line code (also called digital baseband modulation) is a code chosen for use within a communications system for transmission purposes.
For digital data transport line coding is often used.
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For digital data transport line coding is often used.
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People are often concerned about measuring the maximum data throughput rate of a communications link or network access. A typical method of performing a measurement is to transfer a 'large' file and measure the time taken to do so.
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Ethernet is a family of frame-based computer networking technologies for local area networks (LANs). The name comes from the physical concept of the ether. It defines a number of wiring and signaling standards for the physical layer, through means of network access at the Media
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In computing, binary prefixes can be used to quantify large numbers where powers of two are more useful than powers of ten (such as computer memory sizes). Each successive prefix is multiplied by 1024 (210) rather than the 1000 (103
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kilobyte (derived from the SI prefix kilo-, meaning 1,000) is a unit of information or computer storage equal to either 1,000 bytes or 1,024 bytes (210), depending on context.
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megabyte or Mbyte is a unit of information or computer storage equal to either 106 (1,000,000) bytes or 220 (1,048,576) bytes, depending on context. In rare cases, it is used to mean 1000×1024 (1,024,000) bytes.
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gigabyte or Gbyte (derived from the SI prefix giga-) is a unit of information or computer storage meaning either 1000³ bytes or 1024³ bytes (1000³ = one billion). The usage of the word "gigabyte" is ambiguous, depending on the context.
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kibibyte (a contraction of kilo binary byte) is a unit of information or computer storage, established by the International Electrotechnical Commission in 2000. Its symbol is KiB.
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mebibyte (a contraction of mega binary byte) is a unit of information or computer storage, abbreviated MiB.
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- 1 MiB = 220 bytes = 1,048,576 bytes = 1,024 kibibytes
- 1 MiB = 1024 (= 210
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gibibyte (a contraction of giga binary byte) is a unit of information or computer storage, abbreviated GiB[1].
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- 1 gibibyte = 230 bytes = 1,073,741,824 bytes = 1,024 mebibytes
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A teleprinter (teletypewriter, Teletype or TTY for TeleTYpe/TeleTYpewriter) is a now largely obsolete electro-mechanical typewriter which can be used to communicate typed messages from point to point through a simple electrical
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A telecommunications device for the deaf (TDD) is an electronic device for text communication via a telephone line, used when one or more of the parties has hearing or speech difficulties.
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EIA-608, also known as line 21 captions, is the standard for closed captioning for NTSC TV broadcasts in the United States and Canada. It was developed by the Electronic Industries Alliance.
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Modem (from modulate and demodulate) is a device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information.
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baud (pronounced /bɔːd/ unit symbol "Bd"), is a measure of the symbol rate, the number of distinct symbol changes (signalling events) made to the transmission medium per second in a digitally modulated signal.
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The Bell 103 modem was the first commercial modem for computers, released by AT&T in 1962. It allowed digital data to be transmitted over regular telephone lines at a speed of 300 bits per second.
The Bell 103 modem used audio frequency-shift keying to encode data.
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The Bell 103 modem used audio frequency-shift keying to encode data.
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This article details the ITU-T V-Series Recommendations for protocols that govern approved modem communication standards and interfaces.
Note: the bis and ter suffixes are ITU-T standard designators of successive iterations of a standard.
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Note: the bis and ter suffixes are ITU-T standard designators of successive iterations of a standard.
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This article details the ITU-T V-Series Recommendations for protocols that govern approved modem communication standards and interfaces.
Note: the bis and ter suffixes are ITU-T standard designators of successive iterations of a standard.
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Note: the bis and ter suffixes are ITU-T standard designators of successive iterations of a standard.
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The Bell 212A modulation scheme defined a standard method of transmitting full-duplex asynchronous serial data at 1.2 kbit/s over analogue transmission lines. The equivalent, but incompatible ITU-T standard is V.22.
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See also
- List of device bandwidths
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This article details the ITU-T V-Series Recommendations for protocols that govern approved modem communication standards and interfaces.
Note: the bis and ter suffixes are ITU-T standard designators of successive iterations of a standard.
..... Click the link for more information.
Note: the bis and ter suffixes are ITU-T standard designators of successive iterations of a standard.
..... Click the link for more information.
This article details the ITU-T V-Series Recommendations for protocols that govern approved modem communication standards and interfaces.
Note: the bis and ter suffixes are ITU-T standard designators of successive iterations of a standard.
..... Click the link for more information.
Note: the bis and ter suffixes are ITU-T standard designators of successive iterations of a standard.
..... Click the link for more information.
This article details the ITU-T V-Series Recommendations for protocols that govern approved modem communication standards and interfaces.
Note: the bis and ter suffixes are ITU-T standard designators of successive iterations of a standard.
..... Click the link for more information.
Note: the bis and ter suffixes are ITU-T standard designators of successive iterations of a standard.
..... Click the link for more information.
This article details the ITU-T V-Series Recommendations for protocols that govern approved modem communication standards and interfaces.
Note: the bis and ter suffixes are ITU-T standard designators of successive iterations of a standard.
..... Click the link for more information.
Note: the bis and ter suffixes are ITU-T standard designators of successive iterations of a standard.
..... Click the link for more information.
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Herod_Archelaus
