For me MSI 5850/5870 unlocked is the best bios and Afterburner works perfectly. Here is my Sapphire 5850 with waterblock on the GPU only, flashed with MSI 5870 unlocked bios: @1112/1285 - 1.35v:
1.35v, YIKES!
I got my two 5850's running at 1000/1250 at 1.274v but I'm not going to push any higher than that.
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