IO Meter
In these tests, we compared the performance of Western Digital My Passport Studio's FireWire and USB 2.0 interfaces.
Throughput (Random Access)
Test |
FireWire |
USB |
Difference |
512 KB Read |
15.42 MB/s |
10.14 MB/s |
+ 52.1% |
512 KB Write |
21.74 MB/s |
17.34 MB/s |
+ 25.4% |
4 KB Read |
0.20 MB/s |
0.20 MB/s |
- |
4 KB Write |
0.41 MB/s |
0.40 MB/s |
+ 2.5% |
Random Access Time
Test |
FireWire |
USB |
Difference |
512 KB Read |
32.41 ms |
49.09 ms |
-34.0% |
512 KB Write |
22.99 ms |
28.82 ms |
- 20.2% |
4 KB Read |
19.19 ms |
19.55 ms |
- 1.8% |
4 KB Write |
9.49 ms |
9.79 ms |
- 3.1% |
CPU Utilization (Random Access)
Test |
FireWire |
USB |
Difference |
512 KB Read |
0.14% |
0.79% |
- 82.3% |
512 KB Write |
0.24% |
0.86% |
- 72.1% |
4 KB Read |
0.11% |
0.23% |
- 52.2% |
4 KB Write |
0.35% |
0.39% |
- 10.3% |
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• Overview |
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• The 640 GB My Passport Studio |
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