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Will a GTX 680 bottleneck a stock AMD 1090T?

post #1 of 5
Thread Starter 
Hello!

I'm currently running 1090T (3.2GHz) and a GTX 460 (Factory overclocked) on a 19" (1440x900) monitor. It gobbles up most games I throw at it on that resolution, but now that I'm upgrading to a 27" LED, I don't think the GPU can handle upcoming games at 1900x1080 with all the eye candy on.
So, a quick look at my bank account told me I have enough saved up to splurge on a GTX 680, but a lot of the forums I've been reading have planted a seed of doubt in my mind.
My question is this - Will a GTX 680 bottleneck a 1090T? If yes, to what extent will it bottleneck the processor? And how much can overclocking nullify that?
Before you give me a simple yes/no, hear me out.
I've read a lot of posts that say bottlenecks happen, but don't really describe to what extent it is. See, I'm not the kind of gamer that cringes if I'm not running 100fps. I'm perfectly happy even if things are chugging along at 40-50fps, just as long as all the eye candy is turned up.

So, what should I do? Should I go ahead and buy the GTX 680? Or is the bottleneck (if any) going to hold back the GPU so much that I should buy consider a lesser card and saving myself some money?

Edit - Quick sub-question. I have a PCI-E 2.0 mobo. I see the GTX 680 is PCI-E 3.0 How much of an impact will that have on performance?

Any help would be appreciated. Thank you smile.gif

PS - I'm kind of a noob with forums, so I hope I've posted this in the appropriate section. Please be kind if I haven't smile.gif
Edited by mranthrope - 5/16/12 at 3:56am
post #2 of 5
The GPU in 3d games will bottleneck usually before the CPU if you are playing at higher resolutions than 720p. The cpu should be fast enough, you would get some benefit upping the CPU-NB speed, that has quite an effect. Yes if you got a new intel cpu you would probably get higher fps, but over 60+ you won't notice it, prime example is in games sometime bulldozer competes quick happily with I7's, at high resolution.

As far as bottlenecking PCI express, i read this a while ago:

http://www.techpowerup.com/reviews/Intel/Ivy_Bridge_PCI-Express_Scaling/

And in general there is very little performance in it, pcie 2 x16 is = to pcie x8.
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post #3 of 5
Thread Starter 
Quote:
Originally Posted by warejon9 View Post

The cpu should be fast enough, you would get some benefit upping the CPU-NB speed, that has quite an effect.

By this you are referring to overclocking the CPU, yes?
post #4 of 5
Yea the CPU-nb is the memory controller, and i think also controls the speed of the L3 cache, it does yield good results when overclocked, sometimes better than raw CPU core speed.
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post #5 of 5
CPU/NB also reffered to as FBS or HTT all one and the same it controls the menory operating frequancy.

what Id recomend is a GTX 580 as it operates at 384 bits where the 680 operates 256 bit where it would be a improvement over your 460 that operates at 192 bit
The 580 will have no problem doing everything you want to do on a single display

what Im running right now is a 1090T with a GTX570 in all the games I play with all the eye candy on IM getting as low as 60FPS to high of 105 FPS and my 1090T can push that gpu to 95% with the FBS overclock Im running
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