dual channel freezing problem on Asus P5NT WS

I have the same problem with my Asus P5N32E SLI Plus. Both sticks work fine in Single Channel mode but freeze after 10mins in dual channel. Have tweaked the voltages and no difference other than making it unpostable. Tried with two sets of mem:
OcUK 2GB (2x1GB) DDR2 PC2-8500C5 1066MHz Dual Channel Kit
OCZ 2GB (2x1GB) PC2-6400C4 Dual Channel Platinum Revision 2 XTC Series DDR2

Already RMA'd the motherboard but it was returned as working fine, BIOS updated to 0901 version.
Total pain in the arse.

If it was the voltage, why do the same two sticks run in single channel mode?
(and the voltage is correct)

that's what I thought at first and RMA'd the mobo but the supplier has tested it and reckons it's fine
The exact OCZ memory isn't on the QVL but is running fine at 400@5-5-5-15 2T
Everything is at stock/SPD speeds
QVL = OCZ2T8002GK
Fitted= OCZ2P800R21G
3DMark scoring 12000, PCmark scoring 8000, memtest passed repeatedly in single channel mode

i pasted this from another post if your not running sli get an intel mobo

tyz wrote :


i,ve had one of these a week now nothing but trouble. BSOD 0x0000124 and or freezing up as soon as it gets to the windows enviroiment on Vista 32 bit . Put XP on it little better but as soon as you ask it for some load freeze up's BSOD . Installed call of duty 4 never got to play it, error every time tryed to start programe. Nvidia chipset on the board not any good need wait till Asus fixes it...






the reason is:

1) nvidia mobo's suck!
2) asus really does no make good 680 mobos so the 780 is the same - i use mostly asus mobos
3) you have not tuned the system right - nvidia mobo's are really sensitive to voltage and memroy settings


if you can not tune it and you have only one card - sell it too me or trade for x38 or p35



for example - it can take 3 hours to tune a 680i mobo to 3.3ghz with q6600 b3
it takes 3 mins to get every intel mobo to 3.6ghz with both p35 and x38 mobo

increase your memory and cpu voltage