DFI LanParty NFII Ultra B Voltmods

Overview & additional modifications

That’s all the info needed to do the mods!

I did the following additional modifications to my board:

• lots of heatsinks on all kinds of chips on the board. VERY important: Provide some cooling for the SC2616 VDimm regulation chip and the VDD-Mosfet, as they get extremely hot (~70°C or more; burnt my finger on those). I cut up lots of heatsinks (mostly old P1 50x50x15mm sinks which can be aquired for only a few cents today) and used thermal epoxy to put them on. I only screwed down the northbridge heatsink.




• additional cabling to connect a second PSU. One cable for PS-ON (green cable on the PSU) and one for Ground (black cable on PSU). This makes a second PSU, connected to those two cables, turn on exactly at the same time as the main PSU.




• Northbridge and Southbridge were lapped and I put heatsinks on all those chips that I thought would benefit from it. I first lapped the heatsink base, and then put sandpaper on the bottom of those heatsinks with double-sided tape. Then I sanded the chipsets with the prepared heatsink, until it was flat, i.e. the print on the chip was fully gone and it was flat to the eye.






• additional capacitors on the backside of the motherboard. Those provide higher stability on high overclocks. BUT, be sure to use LOW ESR caps (or at least 105°C rated caps), keep the leads/cables as short as possible when soldering them in and don't use too much of them. Some additional caps can help, but too many will hurt.

I’ve got to thank Lastviking and all the other members of the xtremesystems.org forums (and anyone else involved) who helped in developing all those mods! Without their help it would have been much much harder to write this article.
Lastviking's "DFI Lanparty & Infinity FAQ" on the xtremesystems.org forums already includes nearly all of the mods that I described in the text above, so head on over there to view the original if you want. My goal was to make a guide with better and of course more pics, thus making it easier for you to follow. I hope I could accomplish that goal.

Warning:
All modifications are done at your own risk! I am not responsible for any damage caused by the mods!