Graphic Card Overclocking Problem !!

KareemGT

Distinguished
Apr 24, 2013
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Hello Guys !! When I try to Overclock My Gigabyte HD 7750 1GB OC version and start playing any game i get some Real Lag in it for example !! when i play Battlefield 3 at normal clocks i get 40 fps , but when i try to overclock it i get only 30 with too much lag which makes the game unplayable and sometimes the games stuck for 10 seconds ~ 20 Seconds then starts again with better fps then it's stucks again
and i got the same problem with another games like Counter strike : Global Offensive , Call Of Duty : MW3 , NFS SHIFT , Etc..

This is my PC specs :
Mobo : Asus P5E3 Deluxe
CPU : Core 2 Quad Q6600 @ 2.4GHz
RAM : 4 GB DDR3 @ 1066
PSU : Cooler Master GX 450W [80] Plus Bronze

Btw : I got the same Problem With Asus en9600gt 512 mb