[First Look] DFI 680i LT NF-680i LT SLI (56K Warning~~~)

[virtualrain]

I pulled out my Fluke DMM tonight and did a bit of measurement on some key voltages...

CPU VID:

BIOS...
Set: 1.6000V
BIOS Reading: 1.53V
Fluke DMM: 1.54V

Windows (Idle)...
Speedfan/SmartGuardian: 1.55V
Fluke DMM: 1.56V

Windows (PRIME Small FFT)...
Speedfan/SmartGuardian: 1.49V
Fluke DMM: 1.50V

Overall, BIOS readings and Speedfan/SmartGaurdian are close enough to actual Voltages to consider them legit.

VDimm:

Set: 2.34V
BIOS: 2.27V
SmartGaurdian: 2.27
DMM: 2.28V

Again, BIOS readings are close to actual at least when not under load.

NB:

Since I don't have a DMM measurement point for the NB, I just checked a variety of settings and BIOS/SmartGuardian readings...

Set / Get

1.60 / 1.47
1.57 / 1.45
1.54 / 1.42
1.51 / 1.39
1.48 / 1.37

There is a consistent droop of 0.12V on the NB... If the BIOS reading is correct (as it was with Vcore and Vdimm above) then this is very poor... keep this in mind when overclocking to a high FSB.