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6950 crossfire

Masterdeadly said:
Sorry guys I forgot to tell you, on Radeon Pro while playing BF3 both the red bars were about 50 percent like Surveyor said
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It sounds like a CPU bottleneck. If you can't overclock any more then it's maybe time to start thinking about a new CPU. I thought the Phenom IIs would handle it as well but then again I have little experience with SLI and zero experience with Crossfire.

Have you tried other games to monitor GPU utilisation?. If it's only BF3 affected it would be a bit annoying to upgrade anything although that depends on how much you're into BF3 :). If you overclock your CPU a bit further, run BF3 and if your GPU usage goes higher then there's your answer.

What resolution do you game at?.
 
Masterdeadly said:
I don't need 2nd card for any game just BF3 and 1920x1080

Heaven 2.5 doubled in score just a shame my CPU is holding me back now :(
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Well you can try to clock your CPU to 3.8Ghz and then run BF3 to check if more of your GPUs are getting used. Then try 4Ghz and check in BF3 again. The only way you can fix your problem is by finding it ;).

The process of elemination can be boring but will make problem solving easier in time to come.
 
Well i've only got this second card for the weekend, I don't want my system to go BOOM with 2 6950's and Cpu overclocked to 4GHZ. only have a 650W PSU and unsure how to overclock CPU's safety
 
I do have a overclocked profile from overclockers but it makes me artefact sometimes shall I try it to see if the GPU usage goes up from 3.2ghz to 3.6ghz?
 
Are you guys sure this is a cpu bottle neck? As its well known its gpu's holding the computers back now days cpu's are well ahead of gpu's and 3.6ghz is hardly slow, here are some things id try.
1) swop the pci slots your gpu's are in, prob wont do a lot but just try it.
2) try reinstalling battlefield as some games check your system spec on installation, ive had it when upon changing gpu a game wont work at all untill its been reinstalled.
3) try another demanding game first with both cards then just with the 2gb 6950, i think the darkness 2 demo is out on steam now that needs a powerful rig!
4) i use fraps sometimes just to monitor frame rate what are you using?
 
On a side note and slightly off topic, normaily when your run a xfire / sli setup one card runs x16 and the other x8 in the pci 2.0 slots!? Is this correct? Secondly on the new sandy bridge-e x79 setup with pci 3.0, will they both run x16? Or am i miles out?
 
@Masterdeadly:

http://download.amd.com/Desktop/AOD_Setup_4.0.5.exe

AMD overdrive tool is a windows OC tool from AMD, very easy to use, just increase your multiplier by 1 on each core, test system and then repeat.

@Awahwah, you have a very capable [email protected], 6950 CrossFire Scaling excels with the 2500K with a good clock.

It's going to cost you ~£100 more for a slower setup with a 7970 if you game @1080p, but you would have no dual card hassles at all.

Running 2 x AC Accelero Xtremes 6950>70's@1GHz, running superbly with no hassles here, albeit I don't tend to jump straight into games on release day(apart from BF3, which was also fine for me).
 
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