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CPU bottleneck GPU? - Page 2

post #11 of 31
Yeah I should have clarified, to say high usage.

OP - 3.6-3.8 is a good place to aim for, but I am not that familiar with AMD procs.
post #12 of 31
Thread Starter 
Quote:
Originally Posted by Kasp1js View Post
Are you planing on adding a second gtx570 down the road?
nop, just gtx 570 and 9800 gt
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post #13 of 31
Quote:
Originally Posted by Kasp1js View Post
Are you planing on adding a second gtx570 down the road?
The OP is not gonna find an SLI MoBo on an AMD chipset.
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post #14 of 31
Quote:
Originally Posted by q6600nut View Post
yea bottleneck



Using the 9800GT will take some of the load off of the CPU, but only on apps that use PhysX. SLI is using two or more identical cards linked together by an SLI bridge (Don't use it with your situation).

You will have plenty of power with that PSU and you will see a huge difference with you new setup. Enjoy!
post #15 of 31
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post #16 of 31
Thread Starter 
So I should use only gtx 570 with CMGX750w and a 3.8 ghz cpu ? :/ is that ok ?
some guy posted that CM aren't that great at PSU's so... it's that true or should I get another PSU?
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post #17 of 31
Quote:
Originally Posted by LunaTiC123 View Post
So I should use only gtx 570 with CMGX750w and a 3.8 ghz cpu ? :/ is that ok ?
some guy posted that CM aren't that great at PSU's so... it's that true or should I get another PSU?
Don't touch cooler master or ocz for psu's. get a seasonic, antec, xfx, or corsair. seasonic is widely considered the best with antec and corsair tied. the xfx 750 and 850 are just re branded seasonic 750 and 850 units. personaly i would get a corsair 650W or a XFX 750w, xfx's 650 is okay but not the best out there.
    
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post #18 of 31
Quote:
Originally Posted by tconroy135 View Post
The OP is not gonna find an SLI MoBo on an AMD chipset.

He could just use the SLi hack like many people have.
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post #19 of 31
Quote:
Originally Posted by tconroy135 View Post
That is not necessarily true because today we use multi-core processor, but still play games that are not well optimized for multi-core setups, your CPU may not be stressed at 100%, but is still bottle-necking your GPU.

For example if A game only uses 2-cores and you have a 4-core CPU, your CPU usage maybe 50%, but you still have a significant bottleneck.

However, if you increase clock speed then information can pass faster over the 2-cores that you are using and thus you will be able to obtain more information within you GPU and then the GPU can output more FPS.
This. Just test the most demanding game you have after you get the 570.
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post #20 of 31
Quote:
Originally Posted by tconroy135 View Post
That is not necessarily true because today we use multi-core processor, but still play games that are not well optimized for multi-core setups, your CPU may not be stressed at 100%, but is still bottle-necking your GPU.

For example if A game only uses 2-cores and you have a 4-core CPU, your CPU usage maybe 50%, but you still have a significant bottleneck.

However, if you increase clock speed then information can pass faster over the 2-cores that you are using and thus you will be able to obtain more information within you GPU and then the GPU can output more FPS.
^^^ Good info, this.

As mentioned, running a single card for rendering and other card for physX is not SLI.

And there's no such thing as NOT having a CPU bottleneck in any sort of a permanent sense, because it depends on the test you run, and what settings you run it at.

Basically, the faster your CPU is relative to your total GPU power, the less frequently your CPU will act as the limiting factor to performance. Ergo, there's no reason to NOT overclock one's processor as high as it will safely go. The faster it is, the better.
Edited by brettjv - 1/4/11 at 2:28pm
    
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