Data Bus Comparison
Theoretical bus speeds. Note that actual data throughput will vary
depending on amount of data, packet size etc. Usuallly the real world data
transfer speeds will be less than the theoretical maximum.
| Protocol |
MBytes/sec |
Mbits/sec |
Width (bits) |
Length (m) |
# Nodes |
| PCI-express |
4000 |
40000 |
16 |
- |
- |
| PCI-express |
2000 |
20000 |
8 |
- |
- |
| PCI-express |
1000 |
10000 |
4 |
- |
- |
| PCI-66 |
528 |
4224 |
64 |
- |
- |
| PCI-express |
500 |
5000 |
2 |
- |
- |
| Firewire 1394b |
400 |
3200 |
1 |
100 |
64 |
| PCI-66 |
264 |
2112 |
32 |
- |
- |
| PCI-33 |
264 |
2112 |
64 |
- |
- |
| PCI-express |
250 |
2500 |
1 |
- |
- |
| MXI-3 |
133 |
1500 |
1 |
200 |
2 |
| SCSI-3/Ultra160 |
160 |
1280 |
32 |
5 |
8 |
| PCI-33 |
132 |
1056 |
32 |
- |
- |
| Gigabit Enet |
125 |
1000 |
1 |
100 |
255 |
| UltraATA/100 |
100 |
800 |
16 |
1 |
2 |
| Ultra-2 SCSI LVD |
80 |
640 |
16 |
5 |
8 |
| UltraATA/66 |
66 |
528 |
32 |
1 |
2 |
| USB 2.0 only |
60 |
480 |
1 |
5 |
127 |
| Firewire 1394a |
50 |
400 |
1 |
4.5 |
64 |
| 100Base-T Enet |
12.5 |
100 |
1 |
100 |
255 |
| SCSI |
5 |
40 |
8 |
5 |
8 |
| DV Capture |
3.75 |
30 |
N/A |
N/A |
N/A |
| USB 1.0 |
1.5 |
12 |
1 |
5 |
127 |
| 10Base-T |
1.25 |
10 |
1 |
100 |
255 |
| GPIB/488 |
1 |
8 |
8 |
16 |
31 |
| Serial 230kbaud RS485 |
0.023 |
0.184 |
1 |
300 |
32 |
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