Hi ,
I have 2 x 256mb Corsair XMS 3200 C2 running in LanParty NF2 in dual channel and it ran fine in Prime95.
I also had my Corsair in my EPoX 8rda+ running dual channel and it was fine in Prime 95.
I suggest you try tweaking your settings a bit more and if that dosent work then it could be the chips or mabye controller on the board.
My setting are :-
6 - 3 - 3 - 2 @ vDimm 2.7v and on my LanPartyNF2 i changed it from (SPD) to 1:1 because SPD was giving my problems.
Also i would try running the CPU at default FSB (or lowest) settings first off with the Mem running async.
anyway good luck and i hope you get it running ... :beer:
<b> P.S I also have some 2 x 256mb Geil 3200 memory that runs great in both EPoX 8RDA+ and the LanParty NF2.