WD_Black SN770M 2TB SSD Review

1. Introduction2. WD Black SN770 - 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 Benchmark15. Final Fantasy XIV Endwalker Official Benchmark16. Drive Temperatures17. Real Life File Testing18. Closing Thoughts19. View All Pages

CrystalDiskMark is a useful benchmark to measure the theoretical performance levels of hard drives and SSDs. We are using v8.0.

Although its read score of 69.21MB/s sees the drive at the bottom of the CrystalDiskMark 8 4K T1 QD1 test results chart, its write score of 266.92MB/s is one of the better ones we've seen for a Gen 4 drive.

As you can see from the benchmark results screen we can confirm the official maximum Sequential read/write speeds (5,150MB/s and 4,850MB/s respectively) with a read test result of 5,207.77MB/s and 4,904.94MB/s for writes.

Those Sequential read/write result figures of 5,207.77MB/s and 4,904.94MB respectively puts the WD_Black SN770M firmly in the lower half of the results table.

Peak Performance Profile

Switching over to CrystalDiskMark 8's Peak Performance profile we could once again confirm the official Sequential ratings for the drive.

Using the Peak Performance profile we could confirm the official 4K random performance figures for the drive of up to 650,000 IOPS for reads and up to 800,000 IOPS for writes with test results of 651,606 IOPS for reads and 827,504 IOPS for writes.

Real World Profile

The WD_Black 770M performs well in the Real World profile test. With Sequential read/write scores of 4,660MB/s and 4,840MB/s respectively the drive slips into the top 10 of Gen 4 drives tested with this benchmark.

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