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Why does low res meam more CPU usage?

post #1 of 22
Thread Starter 
I have an HD5850 and i upgraded from a GT240 (9600GSO) and had little to no increase in framerates. I was told that im CPU bottlenecked because of my low res, 1024x768 or 800x600. But all i want to know is WHY DOES LOW RES = MORE CPU USAGE?? Shouldnt the res be all on the GPU anyway?
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post #2 of 22
Low rez means less GPU stress, so to max out graphic cards use you need the cpu to render a lot more frames.
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post #3 of 22
Quote:
Originally Posted by a2hopper View Post
Low rez means less GPU stress, so to max out graphic cards use you need the cpu to render a lot more frames.
I couldn't have put it any better (hell, I couldn't even come close, and I tried)
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post #4 of 22
Low res doesn't mean more CPU usage. It just means less GPU usage, which means the CPU has more of an impact on performance.
post #5 of 22
Thread Starter 
Quote:
Originally Posted by a2hopper View Post
Low rez means less GPU stress, so to max out graphic cards use you need the cpu to render a lot more frames.
But shouldnt the GPU handle it anyway? Even if the card isnt stressed at all?
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post #6 of 22
Didn't you post this same garbage the other day?
post #7 of 22
Thread Starter 
Wait i thinki get it, i looked it up on google and came across a toms post:.
"The part that isn't understood is that loading the GPU more does not take load off the CPU, unless the GPU is bottlenecking the system, which would obviously mean the FPS had to go down to take load off the CPU."
So basically the GPU isnt loaded at all thus giving INSANE fps, and the CPU is forced to render all of those frames, thus by increasing the Res putting more stress on my GPU it will create less FPS for the CPU to handle. What if i use vsync? Will that help or will the CPU still render all the FPS even though the monitor is capped at 60?
EDIT- also found this:
Not really more strain on the CPU, but less strain on your GPU so you see the limits of your CPU instead of the limits of your GPU.
Edited by Smoblikat - 2/1/11 at 11:54am
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post #8 of 22
Thread Starter 
Quote:
Originally Posted by Poisoner View Post
Didn't you post this same garbage the other day?
Dont know why its garbage, and no i didnt. I had asked this question in another thread but that wasnt the reason for the thread, it kinda just popped in at the end and never got answered.
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post #9 of 22
Thread Starter 
i seem to be getting less FPS in games with my HD5850 than i did with my GT240. Any way to fix this? Maybe run a light benchmark in the background?
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post #10 of 22
I doubt games support x256 TBH.
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