Ok so i have g.skill 3x2gb ram
I tested each stick of ram separately and tested one in each slot... results came through with flying colors... yet I can only get 4gb of ram detected and not 6gb... I'll even say again that cpu z found the 6gb of ram, it also found it in slots 1,2,3 (technically 2,3,4.)
so i ruled out any ram problems
I also ruled out any mobo slot problems
Now if p67 models can only take dual ram, I might as well return this to newegg and get 4x2gb