USB 3.0 Performance

Subliminal Aura · 26 Mar 2013 at 12:30

Does this look about right ? The 4k r/w are shockingly poor. Granted it's only a 5400rpm 2.5" drive but - really? - Speeds shouldn't be that poor unless of course it's a limitation of USB3 ?

rpstewart · 26 Mar 2013 at 12:48

That looks pretty much spot on for a mechanical HDD.

Subliminal Aura · 26 Mar 2013 at 13:47

ok thanks. Guess I'll stick to esata

C.R.A.Z.Y · 26 Mar 2013 at 13:59

Subliminal Aura said:
ok thanks. Guess I'll stick to esata

As stated the interface isn't the problem the slow 5k4 hdd is!
USB rocks :-)

Orcvader · 26 Mar 2013 at 14:21

Even if you change to eSATA, you're still limited by the 5400 rpm speed, a 7200 rpm drive will offer better transfer speeds.

Subliminal Aura · 26 Mar 2013 at 15:29

The thing is that performance shouldn't tail off like that. Something is just not quite right I'll do some more tests and report back but there's definitely a bottleneck during small file transfers

rpstewart · 26 Mar 2013 at 16:11

Small file transfer = random accesses which mechanical disks are really bad at. Hence the performance tails off. There's nothing on that chart which suggests a problem, in fact 90+MB/s at the top end is very good for a 2.5" HDD.