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CPU bottleneck here...right?

post #1 of 61
Thread Starter 
Hey all. Here we have an FX8120 OC'd to 4.3GHz with a single 7950 at stock...looking at the utilization of them both, this is a bottleneck caused by the CPU...right?

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post #2 of 61
Nopes, GPU usage is getting to 100%, your CPU isn't bottlenecking you GPU.
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post #3 of 61
Thread Starter 
Quote:
Originally Posted by DMHernandez View Post

Nopes, GPU usage is getting to 100%, your CPU isn't bottlenecking you GPU.

But shouldn't the GPU be at a constant 100%?

I upgraded from a 460 which used to be utilized 100% all of the time while playing Bf3.
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post #4 of 61
Its not a bottleneck. Try reinstalling your drivers after doing a driversweep to get rid of the old ones.
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post #5 of 61
If V-sync is on then it just mean that your gpu don't need to be at full 100%. Remember that not because the gtx 460 need to be at 100% your 7950 need to work that much to accomplish the same thing. Lot's of game i play my gpus donmt reach 100% usage and it's not from bnking, it's simply for not needing to run at 100%
post #6 of 61
Thread Starter 
Quote:
Originally Posted by Frank33 View Post

If V-sync is on then it just mean that your gpu don't need to be at full 100%. Remember that not because the gtx 460 need to be at 100% your 7950 need to work that much to accomplish the same thing. Lot's of game i play my gpus donmt reach 100% usage and it's not from bnking, it's simply for not needing to run at 100%

Actually Vsync is off.

I was always a guy with past generation GPUs for example I bought my 460 when the 5xx series was out....I only got this 7950 today. So you could say I'm a newb.
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post #7 of 61
Quote:
Originally Posted by vinton13 View Post

But shouldn't the GPU be at a constant 100%?

I upgraded from a 460 which used to be utilized 100% all of the time while playing Bf3.

Better cards might not be at 100% usage all the times, one scenario would be if you have v-sync on gaming on a 60hz monitor, the framerate will cap at 60 FPS and in instances where your hardware would be able to go over 60 fps, the card won't need to work at 100%.
With my 7970 the only game that actually pushes it to 99% usage is crysis 3 (or if I turn off v-sync).
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post #8 of 61
If your vsync is off, then yes, gpu core on your card is beeing bottlenecked. It doesnt have to be the cpu, your vram might be bottlenecking the core ( not amount, but speed )
Gpu should be always at 99% usage. If its not, then its bottlenecked either by its own ram, or other part of your system ( usually cpu )
Edited by digiadventures - 2/23/13 at 2:20am
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post #9 of 61
Quote:
Originally Posted by Frank33 View Post

If V-sync is on then it just mean that your gpu don't need to be at full 100%. Remember that not because the gtx 460 need to be at 100% your 7950 need to work that much to accomplish the same thing. Lot's of game i play my gpus donmt reach 100% usage and it's not from bnking, it's simply for not needing to run at 100%

Thats not true, gpu dont have feature where they dont run at 100% because they dont have to smile.gif
What is happening is that your gpu is beeing bottlenecked by your cpu ( or its own ram ).
Something will ALWAYS "bottleneck" even if your are getting hundreds of fps...
But maybe in these cases, where you are getting for example 60 fps and you are satisfied with game speed, bottleneck is not proper term, but fact remains that if gpu is not running at 99% something is limiting the fps it could produce at that moment...if its already producing enough, usage of the term bottleneck is questionable.
Edited by digiadventures - 2/23/13 at 2:16am
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post #10 of 61
There was an article on tom's a while about about CPU bottlenecks.. comparing the top AMD processor against a top Intel CPU. Basically if you wanted 120 fps, you'd need an Ivy Bridge tongue.gif

But I rarely saw the AMD dropping below 60. For a single 7950, it doesn't really matter.. its more about 7970 CF where you really have a problem with AMD cpus.
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