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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 (Sequential Access)
Test |
USB 3.0 |
USB 2.0 |
Difference |
512 KB Read |
63.60 MB/s |
34.93 MB/s |
+ 81.2% |
512 KB Write |
62.16 MB/s |
28.51 MB/s |
+ 118.0% |
4 KB Read |
24.78 MB/s |
7.77 MB/s |
+ 218.9% |
4 KB Write |
29.93 MB/s |
7.64 MB/s |
+ 291.8% |
Sequential Access Time
Test |
USB 3.0 |
USB 2.0 |
Difference |
512 KB Read |
7.90 ms |
14.31 ms |
- 44.8% |
512 KB Write |
8.04 ms |
17.53 ms |
- 54.1% |
4 KB Read |
0.16 ms |
0.50 ms |
- 68.0% |
4 KB Write |
0.13 ms |
0.51 ms |
- 74.5% |
CPU Utilization (Sequential Access)
Test |
USB 3.0 |
USB 2.0 |
Difference |
512 KB Read |
0.65% |
1.04% |
- 37.5% |
512 KB Write |
0.61% |
0.96% |
- 36.5% |
4 KB Read |
3.92% |
3.64% |
+ 7.7% |
4 KB Write |
5.25% |
3.42% |
+ 53.5% |
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• Overview |
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• The 500 GB My Passport Essential |
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