SOT: Slow USB performance in Vista 64

Christian de Godzinsky wrote on 2/9/2009, 1:23 AM

Hi,

Yes - I know, this post basically belongs in the Vista Users forum, but since it seems that all Vista 64 users hang here - I posted this question here:

My virging Vista 64 Ultimate had quite reasonable USB and Firewire throughput. I my tests (using SisoftSandra):

- external USB read speed about 32Mbytes/s
- external Firewire800 throughput about 77Mbytes/s.

Now, months later (with all OS upgrades installed, and also a buch of software), the speed has dropped dramatically (the external drives are the same):

- external USB read speed about 12Mbytes/s
- external Firewire800 throughput about 40Mbytes/s.

In other words, the speed has about halved. My two internal eSata drives are as fast as before (78Mbytes/s). I am running all disks in the speed optimized mode, and all drivers are up to date. No hardware has changed either.

What the h*ck is going on in Vista 64? Is this a known problem? Anyone else experiencing the same? What is the reason for it, and is there a workaround?

It is annoying to transfer video files at such slow speed. How can Vista s**ew up such a basic function as transferring data?

Any good ideas anyone?

Christian

Comments

Terje wrote on 2/9/2009, 2:57 AM

How fragmented are the drives? In operations where you have large amounts of sustained transfer, fragmentation can be a real issue. In every day use, it may not be an issue at all, depending on how the PC is used.

Christian de Godzinsky wrote on 2/9/2009, 3:01 AM

Hi,

Fragmentation is not the issue. The same problem occurs with brand new just formatted drives... :( Vista x64 had some kind of speed issue before SP1 was released? It seems that there is still a speed issue AFTER SP1... Does anybody know about this, Microsoft even had some kind of hotfix... ?!

Christian