Articles: Storage

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Sequential/Random Reading and Writing

We use Anvil's Storage Utilities to measure random and sequential read and write speeds of our SSDs. The synthetic benchmark integrated into this software suite provides a great overview of the tested products by checking out their key speed characteristics. The results you will see here refer to the FOB performance (fresh out-of-box, i.e. non-degraded) of the SSDs. It must also be noted that we use incompressible data for this test.

Crucial has done a good job with the new series which is indeed much faster than the previous one. Besides the 256GB model, which enjoys a performance boost due to its higher level of interleave, the other models have got faster, too. Interestingly, the 256GB, 512GB and 1TB versions of the M550 are comparable in performance, the 256GB model not lagging behind anymore.

Compared to its opponents, the M550 series, like most SSDs based on the Marvell platform, isn’t very fast at reading but delivers superb writing performance. So it is inferior to Samsung’s SSDs and Intel’s new 730 series flagship at random reading irrespective of the request queue depth. But when it comes to writing, the M550 is often in the lead. This series is only slightly slower than the Samsung 840 Pro at sequential writing and long request queue depths.

Overall, the Crucial M550 is a significant improvement over the M500 which has become rather slow by the standards of modern SSDs. The M550 looks like a flagship solution capable of working in high-performance PCs.

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