Sometimes Low FPS, sometimes High FPS for SAME GAME

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Engerek1

Distinguished
Nov 23, 2011
16
0
18,510
I play dirt 3 on ultra settings and main menu fps is about 57-60
BUT SOMETIMES my computer runs at low performance and I get 35-38 fps in main menu. So while in the game I can't play the game properly even at low settings because of that issue.

When I restart my computer and change RAM Voltage or timing settings in BIOS randomly OR CHANGE RAM SOCKET POSITIONS OR PLUG IN DIFFERENT RAM (like remove my Patriot DDR3 1600 MHz and replace Kingstone DDR3 1600MHz) , problem is temporarly solved. To fix that problem again; I remove Kingstone and replace Patriot... Remove Patriot and replace Kingston.... Sometimes it doesn't effect so i have to change BIOS settings for RAM...

That was an example for one game, but that issue for every game...(Crysis 2, dirt 2, BF3, MW3, GTA 4, FEAR 3 ..... )
*My fans are clean (dust removed)
*Drivers & Windows 7 are up to date
*Re-installing Windows is tried, nothing changed.
*All systme temperatures are normal

Processor: AMD Phenom II 965 Black Eddition 3,4 Ghz Processor

RAM: 4 GB DDR3 Patriot

Mainboard: Gigabyte GA-770TA-UD3

Video Card: Sapphire ATI HD 6970

Windows 7 - 64 Bit Ultimate Eddition

ATI Catalyst Version: (11.10 - Last Installed, Default Settings)

Monitor: *Full HD LG(1920x1080 resolution)

Power Supply: OCZ - 700Watt
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I am sure it is about my mainboard but I don't know how to fix it...

Thanks