SSD Performance Tests

We’ve been surprised that our very expensive Samsung SSD’s buyed some years ago for more CHF 800-1000 per 256GB of size (1+2) is not as fast as any other traditional Harddisk. Compared to actual newer ones from Samsung 470 series, I’m sure we were the ones that buyed for the technology research department of Samsung by buying the SSD’s for many bucks during their development.
By taking a look onto the newest model’s performance, it could be that the research was successful and the SSD’s we buy now are really performant ones.

(1) VBM2, Samsung 256GB, unknown model, black cover
(2) VBM1, Samsung 256GB, unknown model, silver cover
(3) AXM0, Samsung 470 SSD 128GB, shipped by Dell
(4) AXM0, Samsung 470 SSD 256GB, ordered in Switzerland
(5) 1.2, Corsair 128GB with Sandforce-2 Controller (uses compression)
(6) 391A, Patriot Wildfire 256GB black
(7) OCZ Vertex 2 128GB

Disk-ID 1 2 3 4
Seq-Read 156.56 MB/s 154.17 MB/s 243.48 MB/s 244.34 MB/s
Seq-Write 7.83 MB/s 151.14 MB/s 193.47 MB/s 235.91 MB/s
4K-Read 12.25 MB/s 12.27 MB/s 12.17 MB/s 13.29 MB/s
4K-Write 2.71 MB/s 5.82 MB/s 29.29 MB/s 42.89 MB/s
4K-64-Read 14.79 MB/s 15.95 MB/s 103.62 MB/s 106.99 MB/s
4K-64-Write 3.29 MB/s 4.98 MB/s 44.10 MB/s 47.56 MB/s
Acc.Time Read 0.47 ms 0.50 ms 0.28 ms 0.24 ms
Acc. Time Write 0.77 ms 0.61 ms 0.12 ms 0.11 ms
Score Read 43 44 140 145
Score Write 7 26 93 114
Total Score 70 97 307 337

Disk-ID 5 6 7
Seq-Read 194.71 MB/s 465.45 MB/s 200.87 MB/s
Seq-Write 79.17 MB/s 156.18 MB/s 82.94 MB/s
4K-Read 13.38 MB/s 10.10 MB/s 13.80 MB/s
4K-Write 10.07 MB/s 7.84 MB/s 24.16 MB/s
4K-64-Read 58.78 MB/s 111.76 MB/s 128.32 MB/s
4K-64-Write 38.69 MB/s 66.07 MB/s 75.99 MB/s
Acc.Time Read 0.19 ms 0.37 ms 0.24 ms
Acc. Time Write 0.36 ms 0.47 ms 0.33 ms
Score Read 92 168 162
Score Write 57 90 108
Total Score 195 332 353

Tests 1-6 made with a internal SATA Controller of Dell’s E6320 Notebook, AHCI enabled. For Test 7 I don’t have futher information about the controller and the configuration.

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