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IO Meter
In these tests, we compared the USB 3.0 and USB 2.0 performance of Western Digital My Passport Essential 500 GB drive.
Throughput (Random Access)
Test |
USB 3.0 |
USB 2.0 |
Difference |
512 KB Read |
17.23 MB/s |
14.44 MB/s |
+ 19.3% |
512 KB Write |
11.48 MB/s |
12.36 MB/s |
- 7.1% |
4 KB Read |
0.14 MB/s |
0.15 MB/s |
- 6.7% |
4 KB Write |
0.16 MB/s |
0.17 MB/s |
- 5.9% |
Random Access Time
Test |
USB 3.0 |
USB 2.0 |
Difference |
512 KB Read |
28.98 ms |
34.61 ms |
- 16.3% |
512 KB Write |
43.56 ms |
40.43 ms |
+ 7.7% |
4 KB Read |
27.64 ms |
26.18 ms |
+ 5.6% |
4 KB Write |
24.30 ms |
23.24 ms |
+ 4.6% |
CPU Utilization (Random Access)
Test |
USB 3.0 |
USB 2.0 |
Difference |
512 KB Read |
0.26% |
0.53% |
- 50.9% |
512 KB Write |
0.14% |
0.45% |
- 68.9% |
4 KB Read |
0.08% |
0.21% |
- 61.9% |
4 KB Write |
0.07% |
0.19% |
- 63.2% |
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• Overview |
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• The 500 GB My Passport Essential |
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