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CPU bottleneck here...right? - Page 2

post #11 of 61
Quote:
Originally Posted by digiadventures View Post

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.

My 6970 usage is between 4 ~ 10% when i play a game like Baldur's Gate EE. It's not because my 3930k bottleneck them or anything. When i play Metro 2033 they go up to 100%. V-sync is simply capping the frame at 60. There is absolutely no point of having 200 frame when my monitor can only display 60. Another good example is playing GW2, gpu's are at 100% with v-sync off and i get stupid fps that don't change a thing and withhh v-sync on gpu's are at around 50~70% usage. It's not called bottlenecking it's called v-sync.
post #12 of 61
Quote:
Originally Posted by Frank33 View Post

My 6970 usage is between 4 ~ 10% when i play a game like Baldur's Gate EE. It's not because my 3930k bottleneck them or anything. When i play Metro 2033 they go up to 100%. V-sync is simply capping the frame at 60. There is absolutely no point of having 200 frame when my monitor can only display 60. Another good example is playing GW2, gpu's are at 100% with v-sync off and i get stupid fps that don't change a thing and withhh v-sync on gpu's are at around 50~70% usage. It's not called bottlenecking it's called v-sync.

If vsync is on, then yes, that setting will "bottleneck" the gpu.
But if its off, you probably even then wouldn't be getting 99% usage on your gpu on old game such as Baldur's Gate EE, which would mean that your 3930k would be bottlenecking you in Baldurs Gate with vsync off.
I was explaining what happens when vsync is off, something is ALWAYS bottlenecking or your would be getting millions of fps
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post #13 of 61
your cpu is overall (very) slightly slower than a 2500k and that cpu runs my sli system easily so there
is no bneck like u fear it..
post #14 of 61
What map, how many players? What settings/framerate? BF3 is a multithreaded game, so it should perform very well with a FX 8 core.

Just for comparison, here are my usage-graphs during 64p full Caspian Border Conquest Large match with 2500k@4,5GHz and 7950@1150/1500MHz, settings were maxed out @1080p 72Hz:






If I put GPU to stock, usage is 99% all the time, and BTW I alt-tabbed in the end, thats why usage dropped so much.
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post #15 of 61
Thread Starter 
Quote:
Originally Posted by youpekkad View Post

What map, how many players? What settings/framerate? BF3 is a multithreaded game, so it should perform very well with a FX 8 core.

Just for comparison, here are my usage-graphs during 64p full Caspian Border Conquest Large match with 2500k@4,5GHz and 7950@1150/1500MHz, settings were maxed out @1080p 72Hz:






If I put GPU to stock, usage is 99% all the time, and BTW I alt-tabbed in the end, thats why usage dropped so much.

That map was Death Valley, 64 players, everything maxed out at 1080p.
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post #16 of 61
Thread Starter 
Here is another screenshot....64 players, Markraz Monolith, maxed out, vsync off. Getting dips to 45FPS. I did a driver sweep this morning too.

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post #17 of 61
You realize that if your CPU was pegged at 100% usage in this scenario, then it would be considered the bottleneck. Its not, so your 7950 is the 'bottleneck' here. Dips into the 45 fps area are not bad at all man, everyone gets those.



This is more of a CPU bottleneck. yes my GPU is 100% as well most of the time.. I'm running a low end system, but you see the difference in the CPU utilization right?

BTW don't use fraps, just run the console command

render.drawfps 1

you can access the console by pressing ~
Edited by zer0entropy - 2/23/13 at 8:15am
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post #18 of 61
Thread Starter 
Oh. I see.
I apologize for my ignorance. I was perhaps spoiled by seeing 100% constantly with my 460. redface.gif
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post #19 of 61
Quote:
Originally Posted by zer0entropy View Post

You realize that if your CPU was pegged at 100% usage in this scenario, then it would be considered the bottleneck. Its not, so your 7950 is the 'bottleneck' here.

No, cpu doesnt have to be pegged at 100% usage or even near, because game might not use all cores efficiently.
It doesn't mean game doesnt need more cpu power.
Gpu usage HAS to be 99%, otherwise SOMETHING is bottlenecking GPU CORE, UNLESS Vsync option is turned on.
It can be vram, or cpu.
Edited by digiadventures - 2/23/13 at 8:39am
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post #20 of 61
Quote:
Originally Posted by vinton13 View Post

Oh. I see.
I apologize for my ignorance. I was perhaps spoiled by seeing 100% constantly with my 460. redface.gif

No, your were right.
Something is bottlenecking your gpu, most probably your cpu.
Try to overclock vram, and see if there is any difference.
If not, your are beeing bottlenecked by cpu. If you see major difference when overclocking vram, then your are beeing bottlenecked by vram
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