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7950 Crossfire - Windows 10 issues

jonjay

jonjay

jonjay

Associate
Joined
29 Jul 2003
Posts
894
Location
London
Hi All,

I recently decided to purchase two 7950s from a work colleague to replace my 6950 [unlocked to 6970].

I knew their were potential issues with Crossfire so wanted to air my experiences to see if I am missing something.

It seems that when running the cars with their default clocks but powerdraw +20% I get a fantastic boost in 3D Mark. When re-running the test it then choppy slow results. After some monitoring of logs I can confirm that

1) Temperatures look ok - not rising above 75 degrees for both cards.
2) The cards are not throttling themselves.
3) ULPS is disabled.

I am at a loss as to why this is happening. Could it be dodgy Windows 10 AMD drivers? I seen people have been having issues on various threads on the internet.

Thanks in advance.
 
Windows 10 has been screwing up GPU drivers across the board.
Use DDU to clean and reinstall 15.7.1 from AMD's site.

Don't worry about ULPS, no point in disabling it unless you are doing some crazy high unofficial overclocks.
Not sure other than that, should be running fine.
 
What an interesting question .... as I have recently installed windows 10 I thought I would do a quick test of crossfire ... and guess what I cant enable it ??? one thing I hadn't tested yet ...

When I go to the control centre and select Enable Crossfire it jumps back to Disable Crossfire ... how very odd ...

DDU Fixed my issue :)
 
Last edited:
jonjay said:
Hi All,

I recently decided to purchase two 7950s from a work colleague to replace my 6950 [unlocked to 6970].

I knew their were potential issues with Crossfire so wanted to air my experiences to see if I am missing something.

It seems that when running the cars with their default clocks but powerdraw +20% I get a fantastic boost in 3D Mark. When re-running the test it then choppy slow results. After some monitoring of logs I can confirm that

1) Temperatures look ok - not rising above 75 degrees for both cards.
2) The cards are not throttling themselves.
3) ULPS is disabled.

I am at a loss as to why this is happening. Could it be dodgy Windows 10 AMD drivers? I seen people have been having issues on various threads on the internet.

Thanks in advance.
Click to expand...

What Version of 3D Mark are you testing with as I could do the same test and see what I get.
 
My 670s although Nvidia have been giving me a headache with Windows 10.

Every time I tab out of a game. My display driver stops working (or so it tells me)

If I remember I will update it tonight.
 
infernox said:
My 670s although Nvidia have been giving me a headache with Windows 10.

Every time I tab out of a game. My display driver stops working (or so it tells me)

If I remember I will update it tonight.
Click to expand...

I forgot to use DDU when I upgraded to windows 10 and that has sorted out my issue so remember to do the DDU thing first :-)
 
Thanks for your reply guys, I have done DDU however will give it another shot.

I am using latest version of 3D Mark - I can get exact version number tonight.
 
Go to the Windows 10 subsection and look at the Windows 10 FAQ. In there it shows you how to disable automatic windows driver updates (although there was one from the other day that still downloaded *rolleyes*.).

Poneros said:
Basically forget about W10 for 6 more months, it's a mess.
Click to expand...

Ridiculous comment.
 
Quick update on this...

The beta catalyst driver 15.8 beta has resolved a lot of the driver crashes, choppiness and overclocking stability for Windows 10. So far so good in my testing.
 
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