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How to tell if CPU is bottlenecking GPU

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  • Bottleneck
  • CPUs
  • Graphics
Last response: in Graphics & Displays
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December 2, 2013 11:06:41 AM

Hello , I bought a new MSI GTX 660 a month ago but many of my games didn't get better , like GTA 4 , I still have to play it on minimum graphics and it's very laggy. I think it's becouse my CPU is bottlenecking my GPU but I wan't to be 100% sure that it's becouse of the CPU before buying a new one , can I check it somehow? Is there any program or something? My CPU is AMD Athlon II X2 250 3,0GHz

More about : cpu bottlenecking gpu

a c 104 à CPUs
December 2, 2013 11:18:44 AM

GTA 4 is a bad port, it doesn't run great even on high end pc.
That cpu is weak.
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a b à CPUs
December 2, 2013 11:20:29 AM

GTA 4 is CPU demanding (I've tested this with my laptop). However, just to be sure if your CPU is bottlenecking the GPU, download software that will show their usage(% load) while gaming and post the results here.
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a b à CPUs
December 2, 2013 11:30:14 AM

The CPU is a severe restriction, the fact that a upgraded graphics card has had little impact on frame rates shows that but you can try this to confirm:
Whatever resolution you're playing on, turn it down one notch and retest, then turn it down another notch and test again-do NOT make any other changes. If the FPS stays the same (within a little) the CPU is holding things up.
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December 2, 2013 11:48:23 AM

Foldalot said:
GTA 4 is CPU demanding (I've tested this with my laptop). However, just to be sure if your CPU is bottlenecking the GPU, download software that will show their usage(% load) while gaming and post the results here.


OK, I played GTA 4 a bit , here are the results: http://postimg.org/image/rgvlx9qax/
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a c 104 à CPUs
December 2, 2013 11:52:24 AM

yes it is high, 90+% cpu usage.
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December 2, 2013 11:56:31 AM

rgd1101 said:
yes it is high, 90+% cpu usage.


What does that mean?
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a c 104 à CPUs
December 2, 2013 1:08:10 PM

it mean your cpu is slow.
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a b à CPUs
December 2, 2013 1:54:29 PM

Low GPU usage combined with high CPU usage (if low FPS) usually means that the CPU is bottlenecking the GPU.
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