Boys I still have a lot of problems to get the certified frequency of my ram.

When I try to boot at 1066Mhz the system on the reboot give me one continuoos beep... I've read that this is due to ram error.

But why? I've setted everything, including manually timings, and I cannot run at 1066Mhz.

Tried also every strap, I could only boot at 800Mhz.

Maybe can be a low voltages on the NB or SB? The first is on the 1.265, and the second is on 1.510. Is the problem caused by these vmm?

Thanks to everyone that could help me to solve this problem.