This is driving me nuts. If I try to change the settings in ATITool, or in CCC Overdrive, they immediately revert back to their original settings. I wanted to modify the BIOS on it, and I downloaded RBE and ATIWinFlash, but the moment it begins to identify the BIOSes on my computer, it locks up. Sometimes it manages to show the two BIOSes (The PCI-E to AGP bridge chip and the GPU itself) and then locks up, and often it does not even get that far. Is there any way to save/flash a BIOS other than those two tools, or do you know what is causing the lockups ? Thanks !