Sabrent Rocket 4 Plus 4TB Review

1. Introduction2. Sabrent Rocket 4 Plus 4TB3. 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. Performance Stability14. PCMark 10 Full System Drive Benchmark15. Real Life File Testing16. Closing Thoughts17. View All Pages

CrystalDiskMark is a useful benchmark to measure theoretical performance levels of hard drives and SSDs.

Of the three Rocket 4 Plus drives we've looked at the 4TB model appears to struggle the most with the CrystalDiskMark 6 4K QD32 test. Comparing the two CrystalDiskMark result screens shows that the E18 controller that the Rocket 4 Plus uses is much more efficient when reading compressible Sequential and 4K data at certain queue depths.

We can also confirm the official maximum Sequential read performance of 7,200MB/s with a test result of 7,521MB/s. However, the tested Sequential write figure of 6,794MB/s is shy of the official 6,900MB/s maximum.

CrystalDiskMark 7

 

 

CrystalDiskMark, version 7, includes a couple of profiles that can be used for testing – Peak Performance and Real World. The result screens for these two profiles not only display MB/s results but also IOPS and latency.

Looking at the results for the Peak Performance profile, we could confirm the official 7,200MB/s Sequential read performance figure with a best test result of 7,401MB/s, however, the best write figure we saw was 6,790MB/s, some way off the official 6,900MB/s.

As for random performance, the drive is rated as up to 650,000 IOPS for reads and up to 700,000 IOPS for writes. As you can see from the Peak Performance results we could confirm the official random read performance with a test result of 655,963.38 IOPS but as with the Sequential writes, we were some way off the official random write figure with a result of 596,309.81 IOPS.

CrystalDiskMark 8

Using the default NVMe setting which forms part of CrystalDiskMark’s v8.0.0 benchmark, we could again confirm the official maximum Sequential read figure of 7,200MB/s with a best test performance of 7,400MB/s. Tested Sequential writes came in at 6,788MB/s, a little short of the official maximum 6,900MB/s figure.

We also 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.

The 4TB Sabrent Rocket 4 Plus read performance climbs smoothly throughout the tested queue depths and threads with a peak performance figure of 336,824 IOPS (1,379.63MB/s) at QD8.

In the write tests, the best performance figure we saw was the 380,346 IOPS (1,557MB/s) using 4 threads at a QD of 8.

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