IO Meter
In these tests, we compared the performance of Western Digital My Passport Studio's FireWire and USB 2.0 interfaces.
Throughput (Sequential Access)
Test |
FireWire |
USB |
Difference |
512 KB Read |
38.88 MB/s |
18.95 MB/s |
+ 105.2% |
512 KB Write |
29.91 MB/s |
18.09 MB/s |
+ 65.3% |
4 KB Read |
16.84 MB/s |
7.68 MB/s |
+ 119.3% |
4 KB Write |
13.96 MB/s |
7.56 MB/s |
+ 84.7% |
Sequential Access Time
Test |
FireWire |
USB |
Difference |
512 KB Read |
12.86 ms |
26.38 ms |
- 51.3% |
512 KB Write |
16.71 ms |
27.64 ms |
- 39.5% |
4 KB Read |
0.23 ms |
0.51 ms |
- 54.9% |
4 KB Write |
0.28 ms |
0.52 ms |
- 46.2% |
CPU Utilization (Sequential Access)
Test |
FireWire |
USB |
Difference |
512 KB Read |
0.21% |
0.92% |
- 77.2% |
512 KB Write |
0.12% |
0.97% |
- 87.6% |
4 KB Read |
3.60% |
5.34% |
- 32.6% |
4 KB Write |
2.22% |
4.94% |
- 55.1% |
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• Overview |
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• The 640 GB My Passport Studio |
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