I have a 12GB kit of Corsair XMS DDR3 1333 (PC3 10666)installed which shows up in the bios and in the Win 7 Pro 64 bit OS as 10GBs. Sometimes when it is turned on it will show up as 12GB as it should, but more oftern as 10GBs. It is desktop memory model HX3X12G1333C9,a 12gig matching kit from Newegg. I am running a i7-960 3.20mhz and all the bois setting pertaining to the CPU and Blk and Memory are left as default settings, mostly Auto. The memory is also running at 1066! It should be running at 1333 with a latancy of 9 at 1.5 volts as advertized and recommended as optimal for the P6T board. Can someone please help me out here. What could the problem be?