Hey guys , as you may have seen in my other post , I flashed my 5850 to a 5870 Bios last night. So far I seem to be testing stable in Furmark up to 950/1275 but I'm not seeing any real performance gain beyond say 900 or so. I looked at my CPU usage and it's running at 25% but that's because only one core is maxed out. Does Furmark or another program do better for multi core testing to ensure that I'm seeing the performance gain ? Also , what software do you use to test Memory OC ? It seems furmark only uses about 10% of the memory.