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5970 quadfire scaling problems

Tags:
  • Radeon
  • GPUs
  • Diamond
  • Graphics
Last response: in Graphics & Displays
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December 1, 2011 3:57:37 AM

I have two diamond 5970's in quadfire but in games I am getting single gpu performance- 20-30 fps on skyrim on max
MSI afterburner shows all gpu's working during games ~60% activity each
- Crossfire cable correctly fastened
-latest drivers for gpu, mobo, etc.
-stock speeds

System spec:
Asus Maximus IV Extreme P67
Intel 2600k -stock speeds for now
OCZ vertex 3 120gb
two diamond 5970's
100w Ultra gold efficiency psu
16gb gskill 1600mhz ram

If anyone could tell me why the scaling is so bad that would be great.

More about : 5970 quadfire scaling problems

December 1, 2011 4:10:31 AM

i dont believe there is even a crossfire profile yet for skyrim. skyrim should be maxed out on a single 5970. have you tried disabling crossfire? Many people have reported performance loss with crossfire enabled in skyrim.
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December 1, 2011 4:15:01 AM

iam2thecrowe said:
i dont believe there is even a crossfire profile yet for skyrim. skyrim should be maxed out on a single 5970. have you tried disabling crossfire? Many people have reported performance loss with crossfire enabled in skyrim.

Its not just skyrim- Minecraft runs at 60 fps, crysis 2 maxed runs on 20fps etc.
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December 1, 2011 4:18:06 AM

Try maxing out the games settings through forcing it in CCC.
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December 1, 2011 4:28:15 AM

Well disabling crossfire and starting skyrim caused a bsod, and now ccc wont let me re-enable crossfire. it is faded out like when you dont have the ability to select an option
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December 1, 2011 4:32:00 AM

OK returning to defaults lets me enable crossfire. forcing ccc max settings on games doesnt really work. it results in some horrible artifacting
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December 3, 2011 12:04:36 AM

im having sort of similar issue except i cant select crossfire at all. 1 card did run skyrim very well at max settings. maybe ill take my other card out for now :( . this card runs battlefield at near max settings on one card as well. turn down anti aliasing down a bit and your good to go. although i would really like to get 100+ fps....
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December 7, 2011 4:58:16 PM

I have a similar config to you (pair of 5970s and a 2600k @ 4.2~4.6) and I've noticed Skyrim will only use 2 gpus max if I use the Catalyst 11.11c performance drivers. I've tried all the drivers and caps from 11.9 to 11.11c and for me 11.11c has given the best performance. I run 1920x1200 with everything maxed out and I use the Skyrim HD + Mountains HD, realistic Water, Better Blood Splatters, Realistic Smoke and Embers, and a few inventory mods and maybe a couple more that I can't think of right now. I run with all of that and only using 2 of my gpus with each one running at around 60% cycles in use and v-synced @ 60. I see an occasional dip in performance right when it starts raining but it goes right back to 60 fps after a sec. I watch all of this closely via MSI Afterburner + G15 applet.

http://www.skyrimnexus.com/downloads/file.php?id=607
http://www.skyrimnexus.com/downloads/file.php?id=711
http://www.skyrimnexus.com/downloads/file.php?id=727
http://www.skyrimnexus.com/downloads/file.php?id=836
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