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CPU Core Parking good or bad?  

post #1 of 15
Thread Starter 
Hey guys,

for the third time i saw people talking about Disabling CPU Core Parking to get performance improvements.

Latest one i saw was on evga forum

It seems that windows parks some of the cores and "un-parking" them can give a performance boost

and this the tool itself


Has anyone else tried it? is it worth doing?

Thanks guys =]
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post #2 of 15
I was experiencing some fps problems similar to micro-stuttering which I thought was impossible for single cards and surely enough unparking my cores did the trick. I think it's worth it, and if you find that it's not just park your cores back.
post #3 of 15
Quote:
Originally Posted by Mariusmsj View Post

Hey guys,
for the third time i saw people talking about Disabling CPU Core Parking to get performance improvements.
Latest one i saw was on evga forum
It seems that windows parks some of the cores and "un-parking" them can give a performance boost
and this the tool itself
Has anyone else tried it? is it worth doing?
Thanks guys =]

Are your cores being parked. I have a 2500k and they don;t park.. I think it mainly affects processors with Hyperthreading.
post #4 of 15
Thread Starter 
Quote:
Originally Posted by sai dee View Post

I was experiencing some fps problems similar to micro-stuttering which I thought was impossible for single cards and surely enough unparking my cores did the trick. I think it's worth it, and if you find that it's not just park your cores back.

yep 3 of my cores were parked. Did you use the tool to check?
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post #5 of 15
Thread Starter 
Quote:
Originally Posted by Mariusmsj View Post

yep 3 of my cores were parked. Did you use the tool to check?

and i do see a difference, in games and overall system responsiveness it's not major but it's there. Once I get my 680 i will check the performance with cores parked and not.

[sorry for failed edit =[]
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post #6 of 15
Depends on the software, for instance W7 default parking with HT parks one of the 2 threads of each core which usually means the first 4 main threads get scheduled on different cores for a quad processor with HT. With software that doesn't play nice with HT you could end up with thread contention when disabling core parking.

As for software to manipulate core-parking, this is a part of Windows power plan and can be changed with Windows built-in command powercfg, no need to have to reboot after making changes.

If you've tried W8 then you might find default core-parking is more aggressive and you will see cores parked in a non HT system.

IOW YMMV.
Edited by ucode - 4/9/12 at 7:04am
post #7 of 15
Thread Starter 
Quote:
Originally Posted by ucode View Post

Depends on the software, for instance W7 default parking with HT parks one of the 2 threads of each core which usually means the first 4 main threads get scheduled on different cores for a quad processor with HT. With software that doesn't play nice with HT you could end up with thread contention when disabling core parking.
As for software to manipulate core-parking, this is a part of Windows power plan and can be changed with Windows built-in command powercfg, no need to have to reboot after making changes.
If you've tried W8 then you might find default core-parking is more aggressive and you will see cores parked in a non HT system.
IOW YMMV.

Thanks for sharing, seems that this is mostly used for laptops
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post #8 of 15
Quote:
Originally Posted by Mariusmsj View Post

yep 3 of my cores were parked. Did you use the tool to check?

No, resource monitor. I have never seen any parked and always a smattering of activity on all. I have balanced power management set so would have expected it. Perhaps it is something in my BIOS settings that prevent it.
Edited by GeneO - 4/9/12 at 10:02am
post #9 of 15
Thread Starter 
Quote:
Originally Posted by GeneO View Post

No, resource monitor. I have never seen any parked and always a smattering of activity on all. I have balanced power management set so would have expected it. Perhaps it is something in my BIOS settings that prevent it.

well download the tool from my first post click check button and see how many of your cores are parked
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post #10 of 15
Quote:
Originally Posted by GeneO View Post

No, resource monitor. I have never seen any parked and always a smattering of activity on all. I have balanced power management set so would have expected it. Perhaps it is something in my BIOS settings that prevent it.

I don think it would apply to your CPU in W7.
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