WD Blue SN550 1TB SSD Review

1. Introduction2. WD Blue SN550 1TB3. Testing Methodology4. CrystalDiskMark5. ATTO Disk Benchmark6. AS SSD7. IOMETER8. 128KB Sequential Performance9. 4K Random Read v QD Performance10. 4K Random Write v QD Performance11. 4K 70/30 Mixed Performance12. Throughput13. PCMark 8 - Storage Consistency14. PCMark 8 - Individual Test Suites15. PCMark 8 Storage Test - Individual Test Suites16. Performance Stability17. Cache Performance18. Performance v Capacity19. Real Life File Testing20. Closing Thoughts21. View All Pages

128KB Sequential Read / Write Performance

In our own Sequential tests, the read performance peaks at 2,417.61MB/s, very slightly above the official figure of 2,400MB/s. Writes peak at 2079.49MB/s, again higher than the official 1,950MB/s.

128KB Sequential Read Performance Compared

At Queue Depth's 1 and 2, the WD Blue SN550 is not only much faster than the previous SN500 drive, it is also faster than both versions of the WD Black SN750 we've tested. However, at a QD of 32, the SN550 as you might expect drops back compared to the two Black SN750 drives.

128KB Sequential Write Performance Compared

At a QD of 1, the SN550 shows very strong performance not only compared to the previous SN500 but to both SN750 Black drives, However as the QD deepens the two Black model drives pull away from the SN550 but it still remains much faster than the older SN500 thanks to its PCIe x4 interface and 96-layer NAND.

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