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6870X2 - CPU bottleneck

post #1 of 18
Thread Starter 
I just installed my second 6870 and did a clean 11.2 driver install (safe mode, driver sweeper, ccleaner, etc).

I installed the latest CAP.

Heaven Benchmark v2.1 works great and uses 100% of both my GPUs. So does BFBC2. But Crysis Warhead uses about 48%, hence a performance worse than a single GPU. (High, Very High Shaders and Post-Processing, 1360x768, MLAA, 4xAA)

Is that a CPU bottleneck? A 3500 MHz 1055t isn't enough, really?

No gain either in GTAIV with supersampling AA (ENB mode)

Thanks for the help.
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post #2 of 18
Both Crysis and GTAIV are very CPU Limited, by adding a 2nd video card, you just gave the cpu more work to deal with. Your resolution is a little low to really be running into unplayable frame rates, as long as the game plays fine, don't worry about it.
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post #3 of 18
Thread Starter 
Yeah, but Crysis has so much stuttering. I often go from 60+ to lower 20s. Reducing detail doesn't help.

I was hoping a second card would fix that. Any settings to lower CPU usage apart from physics to medium?
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post #4 of 18
Post processing but that is about it. Crysis is a very inefficent jumble of code sadly... Try overclocking your card a little more to 3.6-3.8 and see if that helps.
 
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post #5 of 18
1360x768

You best be trollin'
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post #6 of 18
overclock that Chip!!! 3.5Ghz on 1.28v? Crank Crank Crank!!!!
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post #7 of 18
Thread Starter 
Quote:
Originally Posted by Lord Xeb View Post
Post processing but that is about it. Crysis is a very inefficent jumble of code sadly... Try overclocking your card a little more to 3.6-3.8 and see if that helps.
CPU, right.

Thanks for the tips, guys. Let's just hope Crysis 2 will run better.

I kinda have mixed feelings for Crysis, love and hatred. Great game, incredible graphics but very inconsistent performance.

Do you know if the leaked version of Crysis 2 will exploit my 6870x2?

I wanna wait though not to ruin the experience with beta bugs.
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post #8 of 18
Thread Starter 
Quote:
Originally Posted by damric View Post
1360x768

You best be trollin'
Yeah, 3-feet HDTV. Will upgrade to 1080p some day. Love couch gaming with my wireless mouse.
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post #9 of 18
Thread Starter 
Quote:
Originally Posted by Havokr505 View Post
overclock that Chip!!! 3.5Ghz on 1.28v? Crank Crank Crank!!!!
Yeah, I wish I could but I'll blow up those tiny MSI mosfets. 4+1 phase sucks balls
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post #10 of 18
Quote:
Originally Posted by GrandMax View Post
I just installed my second 6870 and did a clean 11.2 driver install (safe mode, driver sweeper, ccleaner, etc).

I installed the latest CAP.

Heaven Benchmark v2.1 works great and uses 100% of both my GPUs. So does BFBC2. But Crysis Warhead uses about 48%, hence a performance worse than a single GPU. (High, Very High Shaders and Post-Processing, 1360x768, MLAA, 4xAA)

Is that a CPU bottleneck? A 3500 MHz 1055t isn't enough, really?

No gain either in GTAIV with supersampling AA (ENB mode)

Thanks for the help.
Crysis barely even utilizes 2 threads which is why you are getting such low gpu usage. 3.5Ghz from a phenom II isn't nearly enough to allow you to get full use of both those cards. If you hit like 4.2-4.5Ghz you might get like 75% at those settings. Turn up all your settings to very high(aside from shadows, those effect cpu performance as well and will decrease your gpu usage more) and set msaa to 8x and you might get closer to 100% with no performance hit. Not trying to start a fanboy attack but crysis is an example of games that are impossible to get full gpu usage with videocard setups like that with a phenom II.
Edited by scyy - 2/15/11 at 7:41pm
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