I wrote a basic bios flashing guide here if anyone wants to try it and is not sure how. Obviously don't use the bios links here though, unless you want to flash a HIS 7950 Ice-Q bios to your cards.
http://forums.overclockers.co.uk/showthread.php?t=18544020
Lovely, thanks
Mines a Sapphire as well by the way.
Can you confirm if your fan ever goes above 40% in either mode?
Yes, I am running both Heaven & Valley in 720p windowed mode, ultra quality as we speak, just to really tax the gpu and so I can easily monitor AMD OverDrive window. Both benchamarks are fluctuating between 60 - 90 FPS each, GPU Activity is 100%, GPU clock is 1000MHz (dropping to 940/840/740 occasionally for a few seconds), MEM is solid at 1250MHz, temp has settled on 92 now, fan reading at 45%. I am running in uber mode and have 'Target GPU Temperature' set at the default of 95 and 'Maximum Fan Speed' pushed up to 100% ceiling. I haven't touched any of the power limit or clock settings, they are all on 0%