Need help with i7 setup.

[Abula]

A friend just order a new i7 setup, but we havent been able to run tripple channel. His setup is

Intel Core i7 920
Asus P6T DELUXE V2
Corsair TR3X6G1333C9 XMS3 6 GB 3 x 2 GB PC3-10666
EVGA 896-P3-1255-AR GeForce GTX260
Antec Sonata III 500 Quiet Super Mini Tower ATX Case (against my advice he bought it).

At first we had some issues with the computer not booting at all, i was out of town so couldn't help much, but he tried changing memory banks etc, without any luck. Not knowing the issue he order some extra parts that he though one of the might be the issue, and bought

Corsair 750TX
EVGA 132-BL-E758-A1 X58 3-Way
Corsair TR3X6G1600C8D Dominator 6 GB 3 x 2 GB

Now with a lot of swaps he manage to make it post with both mobo, but he has the issue atm that he cant start with either memory in the same color banks (atm runing on asus 1,2,6) cant run 2,4,6 nor 1,3,5 or doesnt even boot, now im no expert but 2 mobo n 2 different memory seems wierd he cant do it, maybe we are missing something very simple that we dont know, maybe you guys can throw us a hand.

Thanks,

 

[engiNURD]

You probably need to adjust the RAM voltage if you're using the Dominators. Those sticks run at 1.65v, but the default RAM voltage is 1.5v.

Though, with the XMS3, you should be able to run tripple channel fine without any voltage tweaks, since those are 1.5v sticks. Try it with one stick in DIMM1. If that boots fine, add another stick to the same channel. If that boots fine, add the last stick. Be sure to start with the first DIMM slot, closest to the CPU.

Also, make sure you have the latest BIOS on either board.
Oh, and did you try clearing the CMOS?
What speed was the RAM running at when you tried?
Also try manually setting the timings to the advertised values for the respective models.