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X4 965 6870 Xfire bottleneck

post #1 of 45
Thread Starter 
Recently added another 6870 and it appears that my stock 965 is not keeping up. Afterburner shows 50-70% gpu usage while playing battlefield 3. When I disable Xfire the usage stays at 99% on the single card. The low gpu usage in bf3 with Xfire makes it unplayable. I was not expecting the 965 to struggle with these mid range cards. I'm running 11.12 and cap 3, both are the newest driver/software on amd's site. Would getting a better air cooler and overclocking make a noticeable difference?
post #2 of 45
It probabally would help a lot but you still may have a slight bottleneck tbh with you.
    
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post #3 of 45
what is your fps? it might be your new drivers? i cant see the 965 being your bottle neck my cpu usage is like at 80% when i play and i just got one 6870 and i know thats maxed ill be picking up another one soon i hope its just a driver issue and not bottle necking
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post #4 of 45
lke you said is because its on stock i had a 955 4.2ghz with crossfire 6870 before and it didnt bottleneck
post #5 of 45
uh yah....you'd have to OC to get it right...
 
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post #6 of 45
Thread Starter 
Fps are between sixty and zero. It is not playable with the way the frames jump around. What kind of overclock are we talking about? I have never needed to overclock a chip before. I suppose a decent air cooler and upping the multi a notch or two would suffice?
post #7 of 45
i think its drivers personally, try rolling back to the previous drivers first before overclocking. my fps never drops to 0 on my 965
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post #8 of 45
If you are overclocking your CPU to 4GHz or over him it won't be that much amount of bottleneck + if you add AA / AF on high res that will kill your bottleneck.
    
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post #9 of 45
Yes the overclock will help. My 955 at 3.85 isn't bottlenecking my 6950 unless I've got AA/AF with 1080+. I did notice at anything below 3.4 so for XFire 6870's I'd shoot for 3.7 or above which should be really easy with a C3 965 with a good cooler.
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post #10 of 45
I was bottlenecked with a 1090T and XFire 6870's.... Intel man.
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