Hello guyz I have a big OC problem here is my sistem:

-MB -AsRock P45DE 1.60 Bios
-CPU - Q6600 SLACR(G0)+Zerotherm Core 92 cooler
-Ram - G Skill F2-8500CL5-2GBTD
-Vga - MSI GTX260 core216 factory OC
-PS - Forton 500w

The problem is i tryed everything can't get over 3200(400x8 not stable 9x355 not stable either) tryd lots af voltages pll,nb,sb,vtt,ctlref... i think a miss something...the intel can get easy at 3,6 i can't se where is the problem.Maybe somene knows somethin.
10x in advice.