If some of you are not aware, the DFI Nforce 4 Ultra/D/DR SLI models has a jumper setting onboard that allows you to increase the voltage supplied on the Vdimm feed from 3.3 volts to 5 volts. This will give users the option to supply more than 3.2 volts to the ram on their DFI motherboards. As an example, OCZ VX, Mushkin Redline and other UTT based ram products use this extra voltage to obtain tighter timings with overclocked settings.

I had been having major issues with this board and the 5 volt Vdimm setting, to the point where 1 of my boards has died and is now back with DFI for RMA.

Bleedinedge - XtremeSystems

Thanks to Paul