8gb on DFI LANPARTY X48 T2R at 1066mhz

[samuraiblade]

anyone know what sort of voltage and timings you need to get 8gb of 1066mhz to run on my DFI LANPARTY X48 T2R
ive heard its possible but when i try i get to desktop then it freezes?

 

[samuraiblade]

p.s i can run them at 800mhz using 1.9v without issue . im wondering if its either heat or the boards memory controller just cant handle it , but ive been told it can run at 1066mhz on this board?