Just flashed F7 (Had F6) but can't tell if its a,b etc. In bios set it to voltage optimized but could still see greyed out my old settings. When I got into XP it looked like it picked up my settings on Vcore, Vdimm etc as they were the same as before. Currently I've been stable as a rock with Orthos's various tests at 9x380, 1.44375 Vcore, Vdimm +0.3, FSB and MCH at +0.2 and PCI at 100. On water (Corsair) my temps are at idle TAT(Intel Thermal Analysis) 50/51 and SF (SpeedFan CPU/MB) 44/52.....Load TAT55/54 and SF 54/52 with ambiant at 28c. This seems to be as low as I can get my Vcore for temps and be stable.