Big problem with my hd 5450

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uniqueboy

Honorable
Sep 28, 2012
11
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10,510
hi guys I have
hd 5450 1GB ddr3
amd atholn 64 7750 2.7 ghz dual core
and 2GB ram

the card is working fine but it's kinda week but not much
I play battlefield 3 with color correction and ultra settings on 640*480 resloution when I override my card from the catalyst control center
I could play with these settings and 800*600 or sometime 1024*768
but after few minutes or some time 40 minutes or any time the sound start looping and game freeze and a red dots come all over the screen and I have to minimize the game and maximize it again to play for a few minutes and the same happens and sometimes game crashes and I have to close it or restart pc and when I come back to the default settings and CCC the games work fine even if I play for 6 hour Continuous
so I hope you help me my screen is big and 640*480 is shitty and dunno how to fix

BTW CCC current settings
high performance GPU clock settings 650 mhz
high performance memory clock settings 500 mhz

but I want them to be
high performance GPU clock settings 700mhz
high performance memory clock settings 900mhz
it gives me a 10 fps boost but when I do the problem above happens

please help