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

In our read throughput test the WD Blue SN550 peaks at 2,156.62MB/s at the 4MB block size before dropping back. That peak figure is a little shy of the maximum official figure of 2,400MB/s.

Peak write throughput comes at the 256KB block size at 2,064.35MB/s, which is a bit better than the official maximum of 1,950MB/s

Just to see a bit more clearly how the new drive compares to the previous generation Blue drive and the two versions of the SN750 Black drive, we've pulled out their results into charts of their own.

The new Blue SN550 drive's read performance sits neatly between the previous generation Blue SN500 and the two performance Black SN750 drives. The SN550 suffers a small dip in performance at the 512KB block mark but soon recovers.

The Blue SN550 performs well in the write throughput test until the 256KB block mark where the performance begins to tail off. As with the read test, the new drive is much faster than the previous SN500 Blue drive.

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