Upgread the gpu and get problem

26 views and no comment please guys help me  

What do you mean by "doesn't work good"? Does the system boot? lockup? BSOD? or is it just poor performance?

Yeah,
Explain properly with more information

i mean the GPU work but it's not good i play cod4 and i get 125 fps and i think i should get 250 stable so maybe it's work 40% from it's power idk why ? if the problem from thr RAMS or something in my pc tell me pls :s

Don't be ridiculous. Plus why would you not play with v-sync on.

when 570 gtx in my pc ,, it's lagging and crashing that's all

Powersupply : gigabyte 750 watt
gigabyte don't make power supply

Go google about it ? ..

what is this v-sync ?

http://www.gigabyte.com/products/product-page.aspx?pid=...



V-sync is a proceadure the VGA may use in order to synchronize the horizontal and vertical refresh rates, thus avoiding image tearing. Some people do not think it worth the performance impact, while others, like me, consider it mandatory.

You said you think your card is not working properly because it is running COD4 at 120+ FPS, and you expected 250+. Don't get me wrong, but you should be glad your card is not wasting resources generating frames you won't see. There is nothing wrong with it.

If it is lagging, it is surely not running at 120FPS.