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Sata 3 4k read writes limitation?

Tags:
  • SSD
  • Storage
  • Limit Bandwidth
  • SATA
Last response: in Storage
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October 9, 2014 9:39:08 PM

Hi im just wondering,

Lately, i havent seen any single SSD that hits beyond 100 MB/s for random 4k read/writes Queue Depth of 1.

But we constantly see SSDs do 500+ MB/s sequential read/writes.

Why not with random 4k QD1?

Is this a sata 3 bottleneck or limitation?

Or nand/controller immaturity?

More about : sata read writes limitation

a b G Storage
October 10, 2014 5:43:18 AM

100 MB/s are possible for Q1 writes with fast drives like 850 Pro from Samsung.
Reading is more difficult which is NAND/controller based.
SATA 3 is not the bottleneck, which is one reason why M.2 is not so important for "felt" performance.
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