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How much does CPU affect performance in modern gaming?

post #1 of 22
Thread Starter 
I googled and can't find any benches
with different cpu speeds related to performance on the same
gfx card, or how powerful your graphics cards need to be to bottleneck
your cpu

holla!!! sniper.gif
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Liquid Ocelot
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post #2 of 22
There are so many variables including cpu like, memory,hdd "biggest bottleneck most cases" and gpu even the motherboard has an effect.

Say for instance you had an unlimited amount of power/speed of a gpu it was 10X faster than anything out today ok.... now your cpu will help to an extent from overclocking upto a point either the memory is now lagging and ontop of that the hdd can't send the info quick enough to the cpu then onto the gpu,

Its all interlinked and what really matters is selecting the best parts you can afford that run well together so as not one individual part is bottlenecking the other and try to keep all parts running equal
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post #3 of 22
There is something similar on Tomshardware review.
Part 2.
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post #4 of 22
Quote:
Originally Posted by prtuc2;13317451 
There is something similar on Tomshardware review.
Part 2.
+Rep and excellent article (which is rare from Tom's Hardware, but every now and then they turn out a Golden article). I'm starting to think if I could and should push my upgrade plan back from Ivy Bridge to even Haswell.
post #5 of 22
Quote:
Originally Posted by Chewy;13317440 
There are so many variables including cpu like, memory,hdd "biggest bottleneck most cases" and gpu even the motherboard has an effect.

Say for instance you had an unlimited amount of power/speed of a gpu it was 10X faster than anything out today ok.... now your cpu will help to an extent from overclocking upto a point either the memory is now lagging and ontop of that the hdd can't send the info quick enough to the cpu then onto the gpu,

Its all interlinked and what really matters is selecting the best parts you can afford that run well together so as not one individual part is bottlenecking the other and try to keep all parts running equal

wrongooooo. sorry, but the HDD doesnt affect performance. not in terms of fps etc. only loading times of maps etc.....
     
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post #6 of 22
CPU speed can greatly affect gaming performance, especially in multi-GPU systems. However with single GPU systems such as yours overclocking does not have as profound an impact as CPU bottleneck is not as significant. How large the gain is will depend on the scale of the overclock(the higher the better usually, the structure of the game(whether it splits the load between more cores and is multithreaded), and what resolution you play at.

You might have to wait a week to see the data but I'm currently developing a massive analysis project on this subject:

http://www.overclock.net/pc-games/1002182-analysis-cpu-frequency-its-impact-gpu.html

I ran a single test series just as an experiment for Tri-SLI and CPU overclocking, the charts are found here:

http://www.overclock.net/13308188-post19.html
Edited by Lampen - 4/29/11 at 6:00am
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post #7 of 22
If you have anything more than a tri-core then you're pretty much all set for 60fps on all games if your graphics card can handle it.

Bad Company 2's framerate was around 40fps when I had a 4.3ghz Core 2 Duo regardless of graphics settings; but now it hits over 120fps on my i5. Simply put, the amount of console ports these days means that quad cores are the best for gaming at the moment; since a large majority of console ports are optimized heavily for 3 cores.
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post #8 of 22
post #9 of 22
Starcraft 2 requires a pretty beefy CPU.
going from phenoms to I7 clock for clock you get a 100% boost in perfromance!
can't imagine what that would be going to sandybridge and then overclocking to 4.5GHz
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post #10 of 22
Thread Starter 
ya I'm just waiting on some conclusive evidence before I push my OC higher,
and also if I need to push it higher since I"m considering doing some crossfiring smile.gif
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Liquid Ocelot
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