I was messing with GPU Overclocking tools...

Frederico_1

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Sep 13, 2015
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So, I used a GPU OC tool and I kinda maxed it out, games were running nice, but outta nowhere my pc starts running slow and CS:GO goes from like 190FPS to 90FPS. It doesn't seem damaged, I don't know what to do...
 

BSOD BSTD

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Nov 21, 2013
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reset what you have done immediately so you don't damage the card. Did you increase the voltage? this wikihow is pretty good

http://www.wikihow.com/Overclock-a-Graphics-Card

follow these steps. start with a simple overclock without increasing voltage and get that stable, once thats done you can maybe look at increasing voltage.

Also google the safe max speed of your GPU, there will be guides as to what you can expect to hit.