P55A-UD3P F6
i7-860 (True+1800 rpm fans) 4GHz DDR2300
BIOS... PCIe 100, QPI 36x, CPU VTT 1.25v, PCH Core 1.05v, CPU PLL 1.70v, DIMM 1.66v, Vcore Normal VID+DVID







DDR2500 on this board is quite possible
just a possibility test on the board i haven't checked for lowest voltages...