M18X R2 gtx 675m sli problem: GPUs have different RAM chips/bios

I have the m18x r2 with 2 gtx 675m cards in sli , i get like 23 avg fps on unigine benchmark using one card , with sli enabled i got 3 fps , then i realized both cards have different ram chips and bioses (one is hynix and the other one is samsung) , but both are dell cards . Im using the 330w power adapter and i dont know what to do .... need some light here !! thanks in advance !!


UPDATE: just found out the power brick powers down when using the cards in 3d mode , thats why the cards...

M18X R2 gtx 675m sli problem: GPUs have different RAM chips/bios

M18X R2 gtx 675m sli problem: GPUs have different RAM chips/bios