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usb 3.0 debit sur une z77 35 mo/s


chevalierx
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salam

 

windows 7 pro x64

j'ai un problème de débit sur usb 3.0

ma config :

i5 2500k

msi z77a g43

ram 8go 1333

disque dire samsung eco f2 500 go

disque dure externe toshiba 1 to usb 3.0

 

toutes transfert depuis usb 3.0 a un maximum de 35 m/s

 

-----------------------------------------------------------------------

CrystalDiskMark 3.0.2 x64 © 2007-2012 hiyohiyo

Crystal Dew World : http://crystalmark.info/

-----------------------------------------------------------------------

* MB/s = 1,000,000 byte/s [sATA/300 = 300,000,000 byte/s]

 

Sequential Read : 35.278 MB/s

Sequential Write : 29.546 MB/s

Random Read 512KB : 20.483 MB/s

Random Write 512KB : 27.878 MB/s

Random Read 4KB (QD=1) : 0.409 MB/s [ 99.9 IOPS]

Random Write 4KB (QD=1) : 0.834 MB/s [ 203.7 IOPS]

Random Read 4KB (QD=32) : 0.489 MB/s [ 119.3 IOPS]

Random Write 4KB (QD=32) : 0.853 MB/s [ 208.3 IOPS]

 

Test : 1000 MB [H: 23.1% (214.9/931.5 GB)] (x1)

Date : 2012/11/11 22:53:41

OS : Windows 7 Professional SP1 [6.1 Build 7601] (x64)

 

j'ai utilise les dernier pilotes fournis par le site msi

et merci d'avance

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