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GPU freeze my pc on games and furmark

Hello!

I need some help guys, every time when i play games or running furmark my pc is going freeze. Sometimes its a black screen, sometimes simple freeze. My gpu is not overheating, i watched the temperature, when its hit 50-55 celsius pc going freeze. Im pretty sure is not the CPU because i ran prime95 and there was no problem. nothing overclocked, check my rig:

Cpu: Phenom 955 BE @ stock 3.2 ghz
Ram: 8gb 1333hz (4x2gb)
Gpu: GTX 560 Ti
PSU: 2509 LPM 16-25

Thanks for any tips!
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  1. Best answer
    Prime95 stresses the CPU. Furmark and games primarily stress the videocard. You have a GTX 560 Ti, which is rated at 170W-210W depending on which version you have. The CPU is rated at 125W in comparison. I did a Google search on "2509 LPM 16-25" and didn't get any results that said "this is a quality power supply".

    This all adds up to me thinking that as your videocard draws more and more power, it becomes too much for that power supply to handle and your system becomes unstable.
  2. dontlistentome said:
    Prime95 stresses the CPU. Furmark and games primarily stress the videocard. You have a GTX 560 Ti, which is rated at 170W-210W depending on which version you have. The CPU is rated at 125W in comparison. I did a Google search on "2509 LPM 16-25" and didn't get any results that said "this is a quality power supply".

    This all adds up to me thinking that as your videocard draws more and more power, it becomes too much for that power supply to handle and your system becomes unstable.



    Thanks, i replaced the PSU and its work now!
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