Oh well, here's the DFI LP UT NF3 250GB Vdimm mod!

[OnLine]

This mod works for a DFI LP UT NF3 250GB ~ no problem[s] so far !

Better than 4.0V Beta Bios;
offers stable voltage and Vdimm very close to +3.3V rail voltage.

Simply on the backside of the board locate the 7th mem pin and solder a thick wire from that pin to ATX 3.3V rail;


2x512MB@1.5 2 2 6 1T@10x270@3.65V;


thanks to Rio71 !

[SlackeR]

Yeah the dirty_punk style.. will prolly not work as well with badder psu's as there may be more ripple on the 3.3v line..
But anyway that mod is fine. extend the wire to pin 7 in all memslots to ensure maximum power in all slots, even though it ig probably not necessary.

[BMORIN]

Do you have a pic of the contact on the back of the board for the 3.3v rail that you bring over to the dimms?

[embuh]

The pic is like this :
<img src="http://www.geocities.com/half_energized/files/lputnf3vdimmmod.jpg">

but,i'd rather use this:
<img src="http://www.geocities.com/half_energized/files/lputnf3vdimmmod2.jpg">

[Ubermann]

This one make vdimm stuck to 3.3V as max ?

[kryptobs2000]

yup

[angrysquirrel]

Good stuff!

Do we need to cut the mobo's vdimm trace and if not what should the vdimm be set at in the mobo when doing this (if it matters)

[kryptobs2000]

no, and it dosn't matter

[Malves]

This one make vdimm stuck to 3.3V as max ?

Yes. You'll loose control thru BIOS over vdimm. Also, to go higher than 3.3v, you'll need a modded PSU.

[Ubermann]

Then a booster would be a much better choice.

[Malves]

Vdimm with a modded psu would be better than anything, IMO.

[CaTalyst.X]

lol, yeah boosters have alot of trouble with drooping voltage since there isnt a dedicated regulator on the card. There are opamp mods using LM63's i belive but those are more complicated than a vdimm mod. Im working on the real vdimm mod here...getting pushed back tho. Droop and vCore is done, vdd and vdimm are getting there...Ill post pics once they are all finished.

-CaT

[WannaOC]

I can't seem to get this working. I put the mod on and the board won't post, no beeps, nothing. When I take it off the board works fine. My psu is a Fortron 530w set to 3.45 on the 3.3v rail. I just solder the wires on and thats it? Any thoughts or am I missing something?

[twilius_basic]

I can't seem to get this working. I put the mod on and the board won't post, no beeps, nothing. When I take it off the board works fine. My psu is a Fortron 530w set to 3.45 on the 3.3v rail. I just solder the wires on and thats it? Any thoughts or am I missing something?

Nope, I think the PSU is your problem When I did it to mine, I got the same thing, so I took it off and it worked fine. Tried again and re-did the mod, and it still didn't work, just simply wouldn't start up. But instead of removing the mod, I unplugged my TTGI 520W and plugged in an Antec 430W, and boom! booted up fine. I'm now using a Powerstream, it works OK too.

I think the mod just doesn't play nice with some PSUs.....

[WannaOC]

I've got a couple extras laying around so I'll give it a shot. Thanks for the input.

[Holst]

The fortron 530 thinks this mod is a short circuit and wont boot up.

Same problem with DDR booster from OCZ.