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CPU utulization drops in the middle of BF3

post #1 of 11
Thread Starter 
Hello everyone.O have a problem.
I use C2Q 9450 from 2.66 -3.9ghz , 4GB DDR2 And 6850,Crossfire 6850.Windows 7 64 but SP1, fully updated.

My problem is that when i start playing BF3 , first 5-10 minutes are marvelous. i have 50-60+ FPS on Ultra settings with 1680*1050 resolution.
But afte that time ( 5-10 min) my cpu start laggs, freeze, slowing down my gaming.

I screened TaskManager with GPU usage.



You can clearly see that my CPU bottlenecks my 6850 crossfire, even so, i tried on a single card, the same result-lag, freeze, constantly FPS droping. after 5-10 minutes.
All software and drivers are up to update. Help me, please. Why my cpu behave in this way ?
I also noticed that memory was decreasing it's usage.
Swap file on each logical HDD - 6GB +

Thank you very much, people.
RageGearBox
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RageGearBox
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post #2 of 11
What does your ram usage look like? I saw some mentions that 4gb wasn't enough. Doesn't seem right to me but maybe..

You have 2 large GPU drops also, would those be in the 5-10 minute mark?

Other thing to check would be temperatures, if they get to hot your components might be throttling.
post #3 of 11
Thread Starter 
thnaks for quick reply.
interesting fact- my friend on Q9450 4gb ram 580GTX has no problems. Hm maybe because his 580Gtx has 1.5Gb v-memorY ? If not - it's time to buy some DDR2 wait for Ivy



Any suggestions ?
RageGearBox
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RageGearBox
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post #4 of 11
you need more ram! 4gb isnt enough. Trust me BF3 uses 4.6gb give or take of ram. grab 8gb and ull be golden. You can also add 2 4gb sticks to ur PC right now but make sure all the timings are the same and voltages. Preferably use the same company if possible typer:
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post #5 of 11
Thread Starter 
thank you. i'll try ))
RageGearBox
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RageGearBox
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post #6 of 11
Quote:
Originally Posted by bespreDELL View Post
Hello everyone.O have a problem.
I use C2Q 9450 from 2.66 -3.9ghz , 4GB DDR2 And 6850,Crossfire 6850.Windows 7 64 but SP1, fully updated.

My problem is that when i start playing BF3 , first 5-10 minutes are marvelous. i have 50-60+ FPS on Ultra settings with 1680*1050 resolution.
But afte that time ( 5-10 min) my cpu start laggs, freeze, slowing down my gaming.

I screened TaskManager with GPU usage.



You can clearly see that my CPU bottlenecks my 6850 crossfire, even so, i tried on a single card, the same result-lag, freeze, constantly FPS droping. after 5-10 minutes.
All software and drivers are up to update. Help me, please. Why my cpu behave in this way ?
I also noticed that memory was decreasing it's usage.
Swap file on each logical HDD - 6GB +

Thank you very much, people.
I want your background image.

I would see if there are any background processes that might interupt the cpu usage
    
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post #7 of 11
Thread Starter 
Problem totally solved - Upgradet from 4GB DDR2 to 8GB DDR2

Maximum Battlefield 3 memory usage on 6850CF , 8GB, Windows 7- 64 was 2.25Gb of RAM

I use Ati Catalyst 11.10 + AMD CAP4
Edited by bespreDELL - 11/1/11 at 6:01pm
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RageGearBox
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post #8 of 11
Yeah I'm pretty sure BF3 had a memory leak on me a few nights ago I was using all 8GB with just BF3 and chrome with ~10 tabs. It killed windows I got a DEP warning and then black screen and just sound couldn't get to task manager. I usually am using ~5-6GB when I play though.
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post #9 of 11
Thread Starter 
Quote:
Originally Posted by Aesir View Post
Yeah I'm pretty sure BF3 had a memory leak on me a few nights ago I was using all 8GB with just BF3 and chrome with ~10 tabs. It killed windows I got a DEP warning and then black screen and just sound couldn't get to task manager. I usually am using ~5-6GB when I play though.
curious info, my friend has 580GTX and 4GB DDR2 and he plays smooth for an hours...
maybe that can be explained with 1.5Gb of VRAM , i don't know


But i definitely won't sit and play with lags until Ivy is released. +4GB for me and boost BF3 game spending )
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RageGearBox
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post #10 of 11
On my previous machine I could play BF3 for hours on mediums with a C2D E8500, 4GB DDR2 and a 1GB Superclocked 560 GTX. No issues what so ever.

I wouldn't doubt, though, that pushing it to ultra may be the culprit of your 4GB issues. I wonder if things would have changed if you dropped it down to Medium settings when you were still at 4gb.
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