If you're really serious about OC'ing your 8500 try flashing a new bios and use Radedit to set your mem and core speeds so you don't have to use an OC utility. I wasn't able to push my 8500LE past 275/240 with powerstrip but with the 7005 8500 bios I easilly hit 300/275 You can even get the new 9100 bios and turn your card into a Rad9100 (er uhh, it's still an 8500)