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CPU bottleneck question ???

Last response: in CPUs
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May 27, 2012 12:03:38 AM

I have Phenom II 555,and i was wondering what graphics cards can be paired with it without the cpu being the 'bottleneck'.When will this cpu become bottleneck,would it hold back cards like radeon 6870 or nvidia gtx 560ti ???
May 27, 2012 12:43:26 AM

yes it will hold back these cards but dont worry about it. you can get yourself any card you like the bottleneck will not be that bad or noticable at all maybe about 10 - 20 FPS on high end cards. that is it.
May 27, 2012 4:38:18 AM

Your limit is around the ati 6770 .....................the 6870 or a GTX 560ti is sure to bottleneck your PC
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May 27, 2012 12:46:34 PM

nomad_1911 said:
I have Phenom II 555,and i was wondering what graphics cards can be paired with it without the cpu being the 'bottleneck'.When will this cpu become bottleneck,would it hold back cards like radeon 6870 or nvidia gtx 560ti ???

No it wont be bottlenecked by 6870. The Phenom II 555 is a very good gaming CPU except for a few CPU intensive games.
What is your monitor resolution & the games you wish to play on?
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May 27, 2012 1:15:55 PM

in gaming that is using just 2 cores, like in most games, it will perform similar to a PIIx4 955 (same clock rate)
http://www.anandtech.com/bench/Product/120?vs=88

so with even a 7970:
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May 27, 2012 3:12:43 PM

nomad_1911 said:
I have Phenom II 555,and i was wondering what graphics cards can be paired with it without the cpu being the 'bottleneck'.When will this cpu become bottleneck,would it hold back cards like radeon 6870 or nvidia gtx 560ti ???


What graphics card are you using now?

To help clarify your options, run these two tests:

a) Run your games, but lower your resolution and eye candy.
If your FPS increases, it indicates that your cpu is strong enough to drive a better graphics configuration.

b) Limit your cpu, either by reducing the OC, or, in windows power management, limit the maximum cpu% to something like 50%.

Go to control panel/power options/change plan settings/change advanced power settings/processor power management/maximum processor state/
set to 50% and see how you do.


If your FPS drops significantly, it is an indicator that your cpu is the limiting factor, and a cpu upgrade is in order.

It is possible that both tests are positive, indicating that you have a well balanced system, and both cpu and gpu need to be upgraded to get better gaming FPS.
May 27, 2012 3:50:40 PM

geofelt said:
What graphics card are you using now?

To help clarify your options, run these two tests:

a) Run your games, but lower your resolution and eye candy.
If your FPS increases, it indicates that your cpu is strong enough to drive a better graphics configuration.

b) Limit your cpu, either by reducing the OC, or, in windows power management, limit the maximum cpu% to something like 50%.

Go to control panel/power options/change plan settings/change advanced power settings/processor power management/maximum processor state/
set to 50% and see how you do.


If your FPS drops significantly, it is an indicator that your cpu is the limiting factor, and a cpu upgrade is in order.

It is possible that both tests are positive, indicating that you have a well balanced system, and both cpu and gpu need to be upgraded to get better gaming FPS.


Currently i'm using radeon 6670 so it's obviously bottlenecking the cpu in this case,so i cant really test the cpu with it,thx for the reply,cheers !!!
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