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Can a CPU bottleneck a GPU? - Page 2

post #11 of 43
Quote:
Originally Posted by Shadowrunner340 View Post
no no he's asking if the gpu is too slow for the cpu, which i think might be the case
That's not what he says in the original post. So either most everyone reading this thread is dyslexic or the author is...
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post #12 of 43
Quote:
Originally Posted by baldrick View Post
The CPU can DEFINATELY bottle neck a CPU, I was doing regular benchmarking while OCing and even on my e6300 (and 8800GTS) my 3dmark score went up around 2,000 marks from 1.8ghz to 2.7.ghz, then only 100 marks from 2.7ghz to 3.2ghz, this clearly shows a bottle neck.
3DMark will show you how much a Core 2 is bottlenecked by a GPU, do a test with a 7600GT then an 8800GTS.....it's MASSIVE. No point having a superfast CPU for games like Crysis if your GPU is a bit past it.
 
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post #13 of 43
Quote:
Originally Posted by baldrick View Post
The CPU can DEFINATELY bottle neck a CPU, I was doing regular benchmarking while OCing and even on my e6300 (and 8800GTS) my 3dmark score went up around 2,000 marks from 1.8ghz to 2.7.ghz, then only 100 marks from 2.7ghz to 3.2ghz, this clearly shows a bottle neck.
Think about it for a second. You have a DX10 card and he has a DX9 card, generations apart, and yours performs twice as well if not more. You can't compare apples and oranges.

A 7600GT will not even come close to bottlenecking any of the original Core 2 Duos. Period.
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post #14 of 43
Quote:
Originally Posted by baldrick View Post
The CPU can DEFINATELY bottle neck a CPU, I was doing regular benchmarking while OCing and even on my e6300 (and 8800GTS) my 3dmark score went up around 2,000 marks from 1.8ghz to 2.7.ghz, then only 100 marks from 2.7ghz to 3.2ghz, this clearly shows a bottle neck.
Well, did your SM2.0 and SM3.0 scores go up? Of course outside the usual 3%
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post #15 of 43
to be honest here a 7600GT is just as fast as the 6800Ultra which saw massive gains when it got dual core over single core, so a 7600GT does not bottleneck a low end Core2 at all.
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post #16 of 43
Thread Starter 
i might not have the best C2D, but a E6400 OC'd to 3.6Ghz isn't quite a low end C2D, is it???
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post #17 of 43
Well, an e6400 is an allendale, not a conroe so while it isn't the shining star of the Core2 series, it is still a great processor. The GPU is definitely your bottleneck. I think that a 7900 or an x1950 would stay on par with that processor. You could go and buy an 8800gts and with that overclock (which is quite good by the way) your CPU would be bottlenecking it some, but not too much. If you are looking to upgrade, I would get an 8800gts and another gig of RAM (make sure that RAM keeps 1:1 with your fsb). That 8800gts will be faster than your processor, but at the same time you are really getting a bang for your buck and you future-proof yourself considerably more than if you bought a dx9 card like the x1950 or 7900
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post #18 of 43
I find that my Opty 165 at 2.8GHz bottlenecks my 8800GTS.

No amount of GPU overclocking makes a blind bit of difference to my 3DMark06 score (~8600 points)
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post #19 of 43
Half the people in this thread either don't know how to read or are lysdexic.
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post #20 of 43
Quote:
Originally Posted by douglash View Post
is it possible that the CPU is bottlenecking the gpu as i sometimes get a screen freeze almost as if the gpu is struggling to keep up with the cpu...
Bottlenecking does NOT cause that. That could be a driver problem, overheating, fragmentation etc.

So, whether one is bottlenecking the other is completely irrelevant.
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