New MB (Asus P6X57D Premium), new CPU (Intel i7 930) and three new 4gig RAM sticks (Patriot G-Series DDR3 1600MHz PC3-12800) installed. Memory seated properly. BIOS flashed to latest. Set to XMP in BIOS. Returned memory for new set of three and still only getting BIOS to show 8 gig. Anyone have any suggestions? : (