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What is the problem here? Dx11 Crysis 2 lags.

post #1 of 17
Thread Starter 
Ok guys so it seems my rig isn't able to run Crysis 2 with dx11 enabled with everything maxed, it seems when I turn my frames drop massively and I was just wondering what is the most likely problem. I suspect the problem here is my cpu but I am not really sure.

Just a side note my motherboard says ir runs my 2x6870's x8 x8 would I see a massive benefit simply getting a x16 x16 board?
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post #2 of 17
It's your vid card more than anything really (granted we're talking about Crysis here); with DX11 + high settings is a pretty beast game to try and run.

Also you'd be just fine with 2x 6870s at 8x/8x, the PCI bandwidth wouldn't bottleneck them at all.
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Stugots III
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post #3 of 17
Crysis 2 with DX11 patch is a poorly coded beast.

There is a rumor that Nvidia paid the devs to make the DX11 patch really hard to run, since nvidia cards have an advantage with DX11 enhancements over ATI.

They basically programmed Tesselation that the player couldn't even see, but the computer had to encode, so performance is pretty tough on that one. A 6870 is a quality card, but isn't that high up on the power rankings, you are going to have to turn down some of the settings.

Start by turning down some of the stuff you can't even notice, AA and AF don't need to be on max, etc.
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post #4 of 17
No the PCI-e bandwith is of little to no consequence. It is more then likely your CPU bottle necking the crap out of you crossfire set up, or screwed up drivers. More then likely its your CPU. Also 6870 isn't a power house of a card so it could be the tessalation that is killing performance.
post #5 of 17
Thread Starter 
I can more than happily play dx9 with high res texture pack and stuff I was just wondering it was time for an update to the cpu as Ivy Bridge looks to be mighty beast.

Thanks for the quick comments guys.
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post #6 of 17
1- There is little or no difference in performance between x8 and x16.
2- Crysis 2 has problem with CF and Crytek didn't fix this problem.
3- I really really don't think you can max out Crysis 2 with your two cards, hell i have a 5970+5870 and i cant max out Crysis 2.
    
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post #7 of 17
Quote:
Originally Posted by twalsh;15341830 
No the PCI-e bandwith is of little to no consequence. It is more then likely your CPU bottle necking the crap out of you crossfire set up, or screwed up drivers. More then likely its your CPU.

He's only using 1x card, and he's got his Ph II x4 @ 4GHz, it's the vid card / the game itself as mentioned (more-so the game really).
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post #8 of 17
Quote:
Originally Posted by Juganot;15341759 
Just a side note my motherboard says ir runs my 2x6870's x8 x8 would I see a massive benefit simply getting a x16 x16 board?
^ is a lie or his sig rig was never updated.
post #9 of 17
He said he has two 6870s. OP might want to fix your sig, think its confusing people.

I am going to guess you have the 1GB models? I think the HD texture's are what is really slowing you down. Most people say their GPU memory is between 1200 and 1400 MB which would explain your "lag" when turning quickly because it has to load those textures very quickly.
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post #10 of 17
Thread Starter 
Yeah sorry about that forgot to update my sig rig. I could have sworn I changed it to 2x 6870's. I have updated it.
Quote:
Originally Posted by Shadowclock;15341902 
He said he has two 6870s. OP might want to fix your sig, think its confusing people.

I am going to guess you have the 1GB models? I think the HD texture's are what is really slowing you down. Most people say their GPU memory is between 1200 and 1400 MB which would explain your "lag" when turning quickly because it has to load those textures very quickly.

Yeah I am running the 1GB models but even with high res texture pack off it lags up a storm when I turn. I will quickly try all low settings dx11.
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