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IO Meter
We compared the Western Digital WD20EARX (6 Gbps) to the Western Digital WD20EARS (3 Gbps). For more performance comparisons, please take a look at The Hard Disk Drive Performance Comparison Guide.
Throughput (Sequential Access)
Test |
WD20EARX (6 Gbps) |
WD20EARS (3 Gbps) |
Difference |
512 KB Read |
119.38 MB/s |
122.59 MB/s |
- 2.6% |
512 KB Write |
117.77 MB/s |
122.34 MB/s |
- 3.7% |
4 KB Read |
54.84 MB/s |
55.27 MB/s |
- 0.8% |
4 KB Write |
43.71 MB/s |
42.17 MB/s |
+ 3.7% |
Sequential Access Time
Test |
WD20EARX (6 Gbps) |
WD20EARS (3 Gbps) |
Difference |
512 KB Read |
4.39 ms |
4.08 ms |
+ 7.6% |
512 KB Write |
4.45 ms |
4.09 ms |
+ 8.8% |
4 KB Read |
0.07 ms |
0.07 ms |
- |
4 KB Write |
0.09 ms |
0.09 ms |
- |
CPU Utilization (Sequential Access)
Test |
WD20EARX (6 Gbps) |
WD20EARS (3 Gbps) |
Difference |
512 KB Read |
0.41% |
0.41% |
- |
512 KB Write |
0.54% |
0.49% |
+ 10.2% |
4 KB Read |
5.77% |
5.33% |
+ 8.3% |
4 KB Write |
5.18% |
4.79% |
+ 8.1% |
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• The Improved 2 TB WD Caviar Green |
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• Testing The Improved 2 TB Caviar Green |
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<<< IO Meter Random Access Performance : Previous Page | Next Page : IOPS Scaling (Random Access) >>>
