I purchased a Low profile radeon 4650 for my inspiron 531s, I recently swapped the motherboard into a new case and got a new psu, this is just temporary until I buy my i7 system. Anyway everything runs great, I can run cod4 on max settings and get like 30fps, I want to see if I can squeeze some more juice into my gpu and get some more fps, I use the auto tune in ati overdrive, and have also used rivatune, I have gone up 5mhz and ran tests to see if it passes, it passed up until I was at like 680/550 I think it was, it passed, I logged into tf2 and I saw red dots everywhere and restarted my computer and lowered it a little bit and ran tf2 again and then got a blue screen. So I decided to leave it alone.. I was sad that I finally have a video card I can overclock and I am having issues with it.. Any suggestions ? I have a Dell Insipron 531 with ASUS M2N61-AX motherboard socket am2..
i believe it's not possible to go above 700/510 at stock voltages without any artifacts/hangs. some games are more overclock friendly; played crysis for over an hour at 700/520 without artifacts. but STALKER SOC would crash even at 689/510 after 2-3 mins, so would far cry 1. C&C generals artifacts at xxx/500.
temps are 37ºC @idle, 60ºC after 30 mins of crysis w/ everything at high.
from what i read sapphire cards should overclock good, better than powercolor (my card) but being low profile is never good..
a guy managed to get 770/500 by "upping the PCI-e clock to 105MHz":