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20 Sep 2011  

Windows 7 Professional x64
Sabertooth x58 not detecting all 12gb of memory

I have sabertooth x58 and 6 sticks of 2gb corsair XMS3 DDR3 1600 MHz RAM 12GB (6x2GB) 8-8-8-24 model TR3X6G1600C8. I can not get 12gb to show in bios...only 8gb show up and I checked each stick one at a time....confimed that they all work....
Also I noticed that when I was checking each stick one at a time in bank a1, computer would not postwith any stick. All sticks posted fine in b1 and c1. Also when i use all 6 sticks only 8gb show up in bios, but in cpu-z it sees all memory...weird...
I can not even get it to go triple channel, when i tried 3 sticks in triple channel setup only 4gb would show
right now I have only 4 sticks running on bank b1, b2, c1, c2...running dual channel 8gb
this is the only configuration that will sticks in a1 or a2 shows up....Please help me!!!!!
My System SpecsSystem Spec