Klevv CRAS C925 2TB SSD Review

1. Introduction2. Klevv CRAS C925 2TB3. 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. 3DMark Storage Benchmark 15. Final Fantasy XIV Endwalker Official Benchmark16. Temperatures17. Real Life File Testing18. Closing Thoughts19. View All Pages

We used CrystalDiskMark 8 to test the random performance of the drive at lower queue depths (QD1 – QD8 where most of the everyday workloads occur) using 1 to 4 threads.

Random Reads

In the QD1-QD8 random read tests the CRAS C925 produced smooth increases in performance as the queue depth deepened without any noticeable dramas. At QD1 the drive speed ranges from 20,202 IOPS (82.74MB/s) using a single thread up to 80,661 IOPS (330.38MB/s) using four threads. At the end of the test run at QD8, the single-threaded performance had risen to 133,880 IOPS (548.37MB/s) while the four-threaded performance rose to 399,754 IOPS (1,637.39MB/s).

Random Writes

In the 4K write tests, the performance rose quickly from QD1 to QD2 for all four tested threads with the fastest rise seen in the three and four-threaded tests. The single thread performance plateaued out after QD2 while all the other threaded tests saw the performance increase with queue depth.

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