| Name |
Speed |
Units |
Can Duplex? |
Notes |
| v.22 |
1200 |
bps |
no |
|
| v.22bis |
2400 |
bps |
no |
first modem I owned ;-) |
| v.32 |
9600 |
bps |
no |
|
| v.32bis |
14.4 |
Kbps |
no |
|
| v.90 |
56 |
Kbps |
no |
current modems |
| DS0 |
64 |
Kbps |
|
Digital Signal Designator 0, a base unit in the digital signal X system |
| CD-ROM |
1.2288 |
Mbps |
no |
a single-speed or "1x" CD-ROM drive |
| DSL/Cable |
1.5 |
Mbps |
no |
just here for rough comparison; here's a DSL speed chart |
| DS1/T1 |
1.544 |
Mbps |
yes |
24 voice channels at 64 Kbps; more info. -- (1.544Mbit = 193-bit frames transmitted 8000 times per second) |
| E1 |
2.048 |
Mbps |
yes |
32 channels, European standard |
| Ethernet |
10 |
Mbps |
yes |
|
| 802.11b "Wi-Fi" |
11 |
Mbps |
no |
effective speeds are much lower |
| DVD-ROM |
11.08 |
Mbps |
no |
single-speed DVD-ROM transfer rate; roughly equivalent to a CD at 9x; spin rate is roughly 3x faster than a CD |
| USB 1.x |
12 |
Mbps |
no |
|
| 32x CD-ROM |
39.3216 |
Mbps |
no |
|
| SCSI-1 |
40 |
Mbps |
no |
the original, 8-bit SCSI |
| DS3/T3 |
44.736 |
Mbps |
|
672 voice channels |
| OC-1/STM0 |
51.84 |
Mbps |
|
base Optical Carrier rate for the SONET system; Synchronous Transfer Mode (STM) is the Euro standard |
| 802.11a/802.11g |
54 |
Mbps |
no |
effective speeds are much lower |
| Fast SCSI |
80 |
Mbps |
no |
8-bit |
| Fast Ethernet |
100 |
Mbps |
yes |
|
| "Super G" |
108 |
Mbps |
no |
double-rate, non-standard wireless protocol |
| ISA bus |
128 |
Mbps |
no |
the old PC bus standard |
| OC-3/STM1 |
155.52 |
Mbps |
|
three OC-1s; might be known as an E4 in Europe |
| 16x DVD-ROM |
177.28 |
Mbps |
no |
equivalent to a CD at ~144x |
| EISA bus |
256 |
Mbps |
no |
|
| ATA/33 |
256 |
Mbps |
no |
ATA/ATAPI 4, Ultra DMA Mode 2 (not the original or slowest), 120ns cycle time, 2 bytes per cycle |
| USB 2.x |
480 |
Mbps |
no |
|
| IEEE-1394A Firewire |
400 |
Mbps |
no |
|
| OC-12/STM4 |
622.08 |
Mbps |
|
four OC-3s |
| Ultra2 Wide SCSI |
640 |
Mbps |
no |
|
| IEEE-1394B Firewire |
800 |
Mbps |
no |
|
| UltraATA/133 |
1 |
Gbps |
no |
|
| Gigabit Ethernet |
1 |
Gbps |
yes |
|
| PCI bus, original |
1.067 |
Gbps |
no |
original 32-bit, 33.3 MHz |
| SATA 150 |
1.2 |
Gbps |
no |
Serial ATA 150 |
| OC-24 |
1.244 |
Gbps |
|
|
| Ultra160 SCSI |
1.280 |
Gbps |
no |
|
| OC-48/STM16 |
2.488 |
Gbps |
|
|
| Ultra320 SCSI |
2.560 |
Gbps |
no |
|
| PCI 64-bit, 66MHz |
4.267 |
Gbps |
no |
|
| Ultra640 SCSI |
5.120 |
Gbps |
no |
|
| PCI-X |
8.333 |
Gbps |
no |
64-bit, 133.3 MHz |
| PC133 SDRAM |
8.333 |
Gbps |
no |
|
| OC-192/STM64 |
9.953 |
Gbps |
no |
|
| Fast Gigabit Ethernet |
10 |
Gbps |
yes? |
|
| OC-256 |
13.271 |
Gbps |
|
|
| InfiniBand |
30 |
Gbps |
|
12-channel operation; each channel is 2.5 Gbps |
| OC-768 |
40 |
Gbps |
|
|
| DDR533 dual channel |
66.667 |
Gbps |
|
DDR533 ram in a dual-channel configuration, 128-bit (2 x 64-bit), 533.3 MHz |
| HyperTransport 1.0 |
102.4 |
Gbps |
|
|
| OC-3072 |
160 |
Gbps |
|
|
| HyperTransport 2.0 |
179.2 |
Gbps |
|
|
| HyperTransport 3.0 |
332.8 |
Gbps |
|
|
| OC-768 with DWDM |
6.4 |
Tbps |
|
"Enkido" |
| glass fiber |
150 |
Tbps |
|
theoretical maximum capacity of one fiber as determined by physics. as with all theories, this one may already be proved wrong |
