Coolbits doesn't work w/the 12.4-series. There's a thread in this forum somewhere that explains how to cut-and-paste the Coolbits from an earlier driver set,into the newer driver set. It's literally cut and paste. I think it's an .ini file or something like that. Search for "coolbits"....I distinctly remember reading about it last week sometime, and reading that this tweak works. Good luck.