Crucial P5 Plus 1TB SSD Review

1. Introduction2. Crucial P5 Plus 1TB3. Testing Methodology4. CrystalDiskMark5. ATTO Disk Benchmark6. AS SSD7. 128KB Sequential Performance8. 4K Random Read v QD Performance9. 4K Random Write v QD Performance10. 4K 70/30 Mixed Performance11. 4K Random Performance QD1-QD812. Throughput13. PCMark 10 Full System Drive Benchmark14. Performance Stability15. Drive Temperatures16. Real Life File Testing17. Closing Thoughts18. View All Pages

We test the 4K random write performance of a drive through a range of queue depths. The setup for the tests is listed below.

4K Random Write

Transfer Request Size: 4KB, Outstanding I/O: 1-32.

In our four-threaded random write tests, the drive's best performance came at the QD16 mark at 271,545 IOPS before dropping back to finish the test run at 270,378 IOPS. That peak figure is nowhere close to the official maximum for the drive of 700,000 IOPS. Once again we did a quick test using eight threads at QD32 with a result figure of 575,586 IOPS, still short of the maximum.

4K Random Write v QD Performance compared.

In a complete opposite to the random read performance, when it comes to random writes, the drive doesn't climb out of the bottom half of the result charts.

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