Slow SSD write benchmark? Does it matter it's 65% full?

the_jiveman

Honorable
May 6, 2012
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10,630
I've had this Kingston HyperX 3K 90GB SSD in my system for about a year now. I don't remember what the benchmarks were at the time of installation, but this is what I'm getting now:

AS SSD Results (read ---- write):

  • ■ Seq: 443.53 MB/s ----------- 113.28 MB/s
    ■ 4K: 20.56 MB/s ------------- 61.32 MB/s
    ■ 4K-64Thrd: 112.90 MB/s ---- 103.37 MB/s
    ■ Acc Time: 0.164 ms --------- 0.279 ms

Similar results from CrystalDiskMark. Doesn't that seem too low for seq. write?

According to http://www.storagereview.com/kingston_hyperx_3k_ssd_review, max seq. write is supposed to be 510 MB/s (and 550 for read). I understand that advertised speeds are only theoretical, but 113 for seq. read seems too low. Or am I missing something?

FWIW, I'm running Win 7 64bit on that SSD plus several applications and games installed (not running during the benchmark, of course). Drive is 65% full right now. That wouldn't be throwing off the benchmark, would it?

Other specs:

- ASRock Z77 Extreme6 motherboard
- i5-3570K CPU
- 2 x 4GB G. Skill Ram in dual channel
- HIS Radeon HD 7850 GPU
- SSD plugged into SATA 3 port using 6 gbps cable and reporting 6gbps in Intel Rapid Storage tool
- SSD configured as AHCI
- Write-caching enabled on the drive
 
Solution


Depends on the model actually, but it applies to all SSDs from 128GB and under.

AlienIsGOD

Distinguished
May 3, 2008
255
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18,810


i get similar write speeds on my HyperX Blue 120GB and its about 70% full as well.