Hi, I am trying to edit the bios on my sapphire 4870 1gb (reference model) and every time I modify and save a bios with RBE, the fan is obscenely loud. The fan runs at 31% for some odd reason under idle while it ran at only 23% with the original bios. I would like to only modify the memory clocks and nothing else for the card since under the UVD profile, it is at 500mhz, and every time I playback a video clip that is accelerated by the 4870's UVD, the vram underclocks from 900mhz to 500mhz, causing the entire screen shakes/flickers before the video plays and it is horribly annoying. Does anyone know how to only modify the memory clocks and nothing else using RBE or a similar program? Thanks.