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Not sure if i'm being bottlenecked...

post #1 of 16
Thread Starter 
ok i know the last thing some of you want is another one of these threads..but I know that my 965 doesn't bottleneck my 560ti because i get 99% gpu usage in 99% of the games i play...but what's puzzling me is after playing portal 2 maxed outa 16xQ AA i went to look at msi afterburner and it says max gpu usage 70%....and my cpu % was nowhere near 100% either so it can't be a bottleneck right? Is portal 2 so easy to run that my gpu doesn't need to be at the 100% usage?(never dropped below 60 fps either)
post #2 of 16
Is Vsync on?

And just because the GPU isnt at 100% doesn't mean that you wont see a gain with a better processor. But portal is easy to run and wouldn't be a good example of this.
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post #3 of 16
It's probably because of the lack of actual drivers that support the game. It just came out so yeah...
     
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post #4 of 16
I also had really low GPU usage in Portal 2. It was actually so easy to run that I was able to fold on my GPU without distracting from the game.
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post #5 of 16
Thread Starter 
Yea vsync is on
post #6 of 16
Quote:
Originally Posted by juano View Post
I also had really low GPU usage in Portal 2. It was actually so easy to run that I was able to fold on my GPU without distracting from the game.

That's awesome.
post #7 of 16
Quote:
Originally Posted by venomblade View Post
Yea vsync is on
Then your GPU will only go up to what ever % it needs to meet the vsync.
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post #8 of 16
Quote:
Originally Posted by venomblade View Post
Yea vsync is on
VSYNC can cause this (as already mentioned) and another thing to note, frame limiting can also cause this.

Example: CS:S

fps_max 101 = 50% or less GPU usage (for me)

fps_max 300 = not quite 99% usage but at least 85+ 100% of the time

    
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post #9 of 16
Thread Starter 
Ah ok, i'll try it without vsync to see if it changes, good to see i'm in the norm though.
post #10 of 16
If you want to see if you're being bottlenecked I would test it out in a game other than portal 2, some games tougher on your CPU to really let you know definitively yes or no would be BF:BC2 or GTAIV. If you can keep your GPU pegged in those games you've got nothing to worry about. I was really happy to see my 570 pegged in GTAIV after hearing how most people are CPU limited in that game. Even though I knew I wasn't bottlenecked it was still cool to see that. Just remember that your performance in game is a sliding scale of the balance between CPU and GPU, meaning you can almost always shift the "bottleneck" to the GPU by turning up the eye candy.
Edited by juano - 4/20/11 at 9:16pm
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