List of interface bit rates
Here is a list of connection bandwidths: the bandwidth of some computer devices employing methods of data transport is listed by bit/s (in kilobit/s (kbit/s), megabit/s (Mb/s), and gigabit/s (Gbit/s) as appropriate) and also MB/s or megabytes per second. Listed in order from lowest bandwidth to highest.
Whether to use bits/s or bytes/s is a matter of debate. (See Talk) The most commonly cited measurement is bolded. In general, parallel interfaces are quoted in byte/s, serial in bit/s.
Many of these figures are theoretical, and various real-world considerations may keep the actual effective throughput much lower. See Measuring data throughput. The actual throughput achievable on Ethernet networks, especially when heavily loaded, is the subject of hot debate.
Note: In telecommunications, 1 kbit/s = 1 000 bit/s, NOT 1 024 bit/s. Thus, all values below use decimal kilobit/megabit/gigabit definitions.
| CONNECTION | BITS | BYTES |
|---|---|---|
| Modem 300 baud | 300 bit/s | 37.5 B/s |
| Modem 28.8k | 28.8 kbit/s | 3.6 kB/s |
| Modem 56.0k | 56 kbit/s | 7 kB/s |
Computer interfaces | ||
| Serial (RS-232, RS-422, etc) commonly | 9.6 kbit/s | 1.2 kB/s |
| Serial (RS-232, RS-422, etc) max | 230.4 kbit/s | 28.8 kB/s |
| USB 1.0 | 1536 kbit/s | 192 kB/s |
| Parallel (Centronics) | 8.0 Mbit/s | 1.0 MB/s |
| USB 1.1 | 12.0 Mbit/s | 1.5 MB/s |
| SCSI 1 | 12.0 Mbit/s | 1.5 MB/s |
| Fast SCSI 2 | 80 Mbit/s | 10 MB/s |
| Fast Wide SCSI 2 | 160 Mbit/s | 20 MB/s |
| Ultra DMA ATA 33 | 264 Mbit/s | 33 MB/s |
| Ultra Wide SCSI 40 | 320 Mbit/s | 40 MB/s |
| FireWire (IEEE 1394) 50 | 400 Mbit/s | 50 MB/s |
| USB 2.0 | 480 Mbit/s | 60 MB/s |
| Ultra DMA ATA 66 | 528 Mbit/s | 66 MB/s |
| Ultra2 SCSI 80 | 640 Mbit/s | 80 MB/s |
| FireWire (IEEE 1394b) | 800 Mbit/s | 100 MB/s |
| Ultra DMA ATA 100 | 800 Mbit/s | 100 MB/s |
| Ultra DMA ATA 133 | 1064 Mbit/s | 133 MB/s |
| PCI 32/33 | 1064 Mbit/s | 133 MB/s |
| Serial ATA | 1200 Mbit/s | 150 MB/s |
| Ultra 160 SCSI | 1280 Mbit/s | 160 MB/s |
| AGP 1x | 2128 Mbit/s | 266 MB/s |
| Serial ATA (SATA300) | 2400 Mbit/s | 300 MB/s |
| Ultra 320 SCSI | 2560 Mbit/s | 320 MB/s |
| PCI-Express (x1 link) | 4000 Mbit/s | 500 MB/s |
| AGP 2x | 4256 Mbit/s | 532 MB/s |
| PCI 64/66 | 4264 Mbit/s | 533 MB/s |
| Ultra640 Scsi | 5120 Mbit/s | 640 MB/s |
| AGP 4x | 8512 Mbit/s | 1064 MB/s |
| PCI-X 133 | 8528 Mbit/s | 1066 MB/s |
| InfiniBand | 10.00 Gbit/s | 1.25 GB/s |
| PCI-Express (x4 link) | 16 Bbit/s | 2 GB/s |
| PCI-X DDR | 18.064 Gbit/s | 2.133 GB/s |
| AGP 8x | 18.024 Gbit/s | 2.128 GB/s |
| HyperTransport 200 MB/s per line or full-sized 32-bit bus | 51.200 Gbit/s | 6.400 GB/s |
| PCI-Express (x16 link) | 64 Gbit/s | 8 GB/s |
| IrDA-Control | 72 kbit/s | 9 kB/s |
| Bluetooth 1.1 | 1000 kbit/s | 125 kB/s |
| 802.11 legacy 0.125 | 2000 kbit/s | 250 kB/s |
| 802.11b DSSS 0.125 | 11.000 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 | 54.00 Mbit/s | 6.75 MB/s |
| 802.11g DSSS 0.125 | 54.00 Mbit/s | 6.75 MB/s |
| Bluetooth 2 | 16 to 96 Mbit/s | 2 to 12 MB/s |
| DS0 | 64 kbit/s | 8 kB/s |
| Frame Relay | 8 kbit/s to 45 Mbit/s | 1 kB/s to 5.625 MB/s |
| SDSL | 2.3000 Mbit/s | 0.2875 MB/s |
| SHDSL | 64 kbit/s to 4.608 Mbit/s | 8 kB/s to 0.576 MB/s |
| ADSL upstream | 64 kbits/ to 512 kbit/s | 8 kB/s to 64 kB/s |
| ADSL downstream | 128 kbit/s to 4 Mbit/s | 16 kB/s to 0.5 MB/s |
| DS1/T1 | 1.540 Mbit/s | 192.5 kB/s |
| E1 | 2.048 Mbit/s | 256 kB/s |
| E3 | 34.368 Mbit/s | 4.296 kB/s |
| DS3/T3 ('45 Meg') | 44.7400 Mbit/s | 5.5925 MB/s |
| OC1 | 51.84 Mbit/s | 6.48 MB/s |
| OC3 | 155.52 Mbit/s | 19.44 MB/s |
| OC12 | 622.08 Mbit/s | 77.76 MB/s |
| OC48 | 2.448 Gbit/s | 306 MB/s |
| Fibre Channel | 800 or 1600 Mbit/s | 100 or 200 MB/s |
| 10 Gigabit Ethernet | 10.24 Gbit/s | 1.28 GB/s |
| OC192 | 10.000 Gbit/s | 1.250 GB/s |
| OC255 | 13.21000 Gbit/s | 1.65125 GB/s |
| OC768 | 40 Gbit/s | 5 GB/s |
| LocalTalk | 230.4 kbit/s | 28.8 kB/s |
| ARCNET (Standard) | 2.5 Mbit/s | 0.3125 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 | 2.0 MB/s |
| Fast Ethernet (100base-X) | 100 Mbit/s | 12.5 MB/s |
| FDDI | 100 Mbit/s | 12.5 MB/s |
| Gigabit Ethernet (1000base-X) | 1 Gbit/s | 125 MB/s |
Memory Interconnect Buses / RAM | ||
| PC66 SDRAM | 4264 Mbit/s | 533 MB/s |
| PC100 SDRAM | 6400 Mbit/s | 800 MB/s |
| PC133 SDRAM | 8528 Mbit/s | 1066 MB/s |
| PC1600 DDR-SDRAM | 12.8 Gbit/s | 1.6 GB/s |
| PC2100 DDR-SDRAM | 16.8 Gbit/s | 2.1 GB/s |
| PC2700 DDR-SDRAM | 21.6 Gbit/s | 2.7 GB/s |
| PC3200 DDR-SDRAM | 25.6 Gbit/s | 3.2 GB/s |
| PC800 RDRAM (single-channel) | 12.8 Gbit/s | 1.6 GB/s |
| PC800 RDRAM (dual-channel) | 25.6 Gbit/s | 3.2 GB/s |
| PC120 RDRAM (single-channel) | 16.8 Gbit/s | 2.1 GB/s |
| PC120 RDRAM (dual-channel) | 33.6 Gbit/s | 4.2 GB/s |
Notes
- Actual Frame relay connections will vary in throughput from 8 kbit/s to 45 Mbit/s depending on configuration. Most commonly below 2 Mbit/s.
- ADSL connections will vary in throughput from 64 kbit/s to several Mbit/s depending on configuration. Most commonly below 2 Mbit/s