Chaintech ZNF3-150, VNF3-250, ZNF3-250 Vmod guide

[//mAr]

First you should locate the Voltmodding spots on your board.
ZNF-150 (http://www.techpowerup.com/articles/96/images/ZNF3-150.jpg) | VNF-250 (http://www.techpowerup.com/articles/96/images/VNF3-250.jpg) | ZNF-250 (http://www.techpowerup.com/articles/96/images/ZNF3-250.jpg)

For all three mods, you need a soldering iron, solder tin and flux.
If this is the first time you are soldering something, you should practice a bit before starting on your motherboard.


VDimm Mod
That's the most important VMod, because the board can not give more than 2,9V to the memory. But as overclocker, for example, with BH-5 or OCZ EB you need a higher Voltage.

Parts needed: 50k Ohm variable resistor (trimmer)

http://www.techpowerup.com/articles/96/images/vdimmsmall.jpg (http://www.techpowerup.com/articles/96/images/vdimmbig.jpg)
(click on the pic to enlarge)

Solder a 50k Ohm variable resistor, set to 50k, between pins five and eight. Measure VDimm with a multimeter on the read point. Lower the resistance for more voltage. I do not recommend going over 3.2V, because the A64's memory controller does not like too much voltage, and could die.

VCore Mod
For those who need a CPU voltage of more than 1.7V- But you need good cooling. 1.8V should be possible with watercooling and 1.95V with a phase change unit.

Parts needed: 50k Ohm variable resistor (trimmer)

http://www.techpowerup.com/articles/96/images/vcoresmall.jpg (http://www.techpowerup.com/articles/96/images/vcorebig.jpg)
(click on the pic to enlarge)

Solder a 50k resistor, set to 50k ohm, between pin ten and ground. Pin fiveteen is ground, but you can also use another ground location on the motherboard. Lower the resistance for higher voltage, watch VCore readings in bios.

Chipset mod
With more chipset voltage it should be possible to run a higher HTT without lowering the LDT.

Parts needed: 10k Ohm variable resistor (trimmer)

http://www.techpowerup.com/articles/96/images/vddsmall.jpg (http://www.techpowerup.com/articles/96/images/vddbig.jpg)
(click on the pic to enlarge)

Solder a 10K resistor, set to 10k ohm, between pin six and ground. I prefer to use the fan connector for ground, because it's near pin six's location.
Lower the resistance for more voltage, watch chipset voltage readings in bios. Don't go beyond 2.1V, it might kill your board.

All Vmods at your own risk.
Good Luck and keep it extreme.

[Unregistered]

is the vmod cpu ok? i want to try to my znf 3 250 =)

[//mAr]

vdimm and vcore mod workin' allright,
vchipset mod isn't tested ...

[Unregistered]

nice,if the next bios dun bring it on i might try the vdimm :)
thnks a bunch

[Unregistered]

Uhhhhhh, I didn't subsribe to this thread but I"m getting email updates about it.
Either someone is feigning my throwaway email addy again or I got lost in the space-time continuum?

Oddly though, it's letting me post this. Am i a member here? LOL!
If so, I certainly haven't caused enough mischief and mayhem to remember any of it.

BTW, nice pics of the vMods, much cleared and easy to see than many of 'em I"ve come across. Pity I don't have a Chaintech znf-----.

[Unregistered]

does the vdimm mod really need to be between those 2 pins, or can it be one and a ground?
btw- vcore mod works well, thanks!

[Unregistered]

does the vdimm mod really need to be between those 2 pins, or can it be one and a ground?
btw- vcore mod works well, thanks!
bump on the vdimm question...

[W1zzard]

you can use any ground (that includes case metal which is grounded too)

[CRXninja]

sorry to bump this thread, but will the vcore mod let you get voltages between say 1.5 and 1.7 volts? the reason i am asking is because i have a sempron 64 2600 and you cant change the vcore on those :ohwell: i can already run the fsb at 300 mhz with the stock vcore of 1.4 volts. i wanna see what it could do if i can raise the core voltage. if anyone can shed some light i would greatly appreciate it!