Question Is 21/64Mb/s of random 4k read/write a good SSD speed?

Mar 10, 2019
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Hi there.

I'm looking to buy a SSD for my build, as my HDD is the next obvious bottleneck, but i'm having a hard time choosing the right one.

I've been told that the specs i'm looking for is mostly 4k random, and not the obviously over-advertised sequential read/write. But most manufacturers of cheap, entry level SSD's just straight up DO NOT show the specs for 4k random AT ALL.

However, i've found this one guy, WD Green, which does have some benchmarkings on a site, and it states that it has a 4k random of 64Mb/s write and 21Mb/s read.

Also i've found some specs measured in IOPS, but i don't know how to measure it in Mb/s.

Is 64/21 better or worse than 25.000/75.000 read/write IOPS?
 
Hey guys, thanks for the answers.

The thing is, i know they're not the same, but i've seen 4k random being measured both on Mb/s and IOPS, i though there was a way to convert it.

Honestly, i just need a parameter to know what is a good number for each of the measurements.