Hello Baggzlash, I am back again with an ongoing RBE issue (for me at least). I have 2 5870's, and now a 5970 (all Gigabyte). When I tried modding the 5870's the overclocking aspects were fine, but if I touched the Fan settings there would be issues. The cards would overheat and lock up if they did not get into Windows soon enough. eg If you stop at the M/B BIOS, or even if it would just take too long to make it into Windows - to probably the point where the ATI driver is loaded. Marginal on every full reboot... 2 out of 4 times it would be too slow and lock up. Once overheated you have to power off for about 1 minute at least, so the next try might get through in time! But as long as you did make it into Windows, all was totally fine and the new fan mappings work great and exactly as expected. (So I just use SLEEP always to keep away from the startup problem). So that was one weird spin off from editing with RBE. On the 5970, if I take an original Core1 BIOS (slave) and even just save it back out with no changes, it loses a few of the 'info' lines. eg the 'blah blah Slave blah blah'. Someone else posted some issues (same thing) about AtiFlash showing missing info in the new BIOS flashed. And this causes the driver to not work in Windows - Device Manager will show the 2nd (slave) "video card" (GPU) failed to start. You can never get it to work. Go back to the original BIOS and it all works fine again. This occurs on any BIOS (GB, Sapp, XFX, ASUS). Flash back to an original Slave BIOS, of any type, and it works again. So RBE must be messing somethng up in that Slave BIOS file. But the MASTER BIOS is totally fine. I can mix an edited Master with an Original Slave and it is fine. Boo hoo... this is messing up my need to alter the mem voltage (for both GPU's). Any ideas? Thanks.