DFI LanParty NFII Ultra B Voltmods

Author: Celemine1Gig
Date: 2005-02-24 15:35:04

The DFI LanParty NFII Ultra B is said to be the best NForce2 based motherboard (or even the best Socket-A board overall).
It has all the features that lots of enthusiasts all around the world were dreaming of seeing packed into one (nearly) perfect motherboard. Those massive advantages are responsible for the excellent reputation of this mainboard, but for some of the users out there this motherboard is not extreme enough, yet. Those users always try to make the best even better, by modding it, thus it matches all their needs (i.e. extreme voltages and extreme stability).
I wrote up a little guide which describes all of the mods for the DFI Lanparty motherboard (and the DFI Infinity NFII, as the layout is the same).

Required parts

At first, I'll list the parts that I used:
  • one 50K (trimmer-) potentiometer for the VCore-Mod
  • one 50K (trimmer-) potentiometer for the OVP-Mod (overVoltage Protection)
  • one 50K (trimmer-) potentiometer for the VDD-Mod
  • one 100K (trimmer-) potentiometer for the VDimm-Mod
  • one 50K (trimmer-) potentiometer for the Southbridge-VMod
  • three SMD/SMT 4.7K resistors (size 0805) for the VDroop-Mod
  • a good soldering iron (Ersa 25W in my case)
  • rosin core solder and solder flux (for example "colophony")
  • some cables (I used 1mm diameter cabling, made from copper strands, normally used for hifi systems)
  • some heatshrink tubing and hotglue
  • and perhaps some isolating protection lacquer
  • heatsinks and thermal epoxy (an alternative to the thermal epoxy would be to buy 5-minute two component epoxy and then mix that with a thermal compound; I used that and it's working fine)
First, cut off or break off one of the two outer legs of all potentiometers, because only two contacts are needed [the middle contact (signal) and one of the outer two pins (ground)]. The third one is useless and could be in your way while working on the other two legs, or could interfere with some parts on the mobo.

Afterwards, adjust the potentiometers for VCore-, OVP-, VDimm- and VDD-Mod to the maximum resistance. The potentiometer for the Southbridge-VMod needs to be set to ZERO Ohms because that Mod leads to increased voltage with increased resistance, in contrast to the other mods. Those are the values to start with - they are very important!

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