Intel D975XBX "Bad Axe" DDR2 VDD Mod

[The Stilt]

Apologies for the delay in publishing the guide :D

Off we go;

http://www.armada.fi/D975XBX/D975XBX-DDR2VDDMod.jpg

Just in case if you can´t read the instructions from the picture:

Solder a 10k variable resistor between the spot (pointed by the arrow) and ground. The alternative soldering spot is marked with blue X.

Lower resistance means higher DDR2 VDD.

I highly recommend that you use the alternative soldering spot.
Soldering directly to the IC leg is easier and safer, since the primary soldering spot is quite small.

http://www.armada.fi/D975XBX/D975XBX-5400UL.jpg

Damn, I love this board ;)

Vcore, Vdroop & MCH VDD mods will follow soon.
I have already done FSB Termination mod, but it has no effect to overclockability.

:D

[d@rkn1ko]

very interesting :toast:

[death metal]

Way to go!

[The Stilt]

DDR2 VDD measuring point:

http://www.armada.fi/D975XBX/D975XBX-DDR2VDDMeasure.jpg

[hicookie]

lol....super high quilty mods picture,well done stilt

[Blue078]

Thanks for your work :toast:

[VictorWang]

:( 512mhz 4-2-2-1............ monster D9

[guess2098]

hummm
i use 10k on X
and the max i can only go up to 2.28v....
my board is 304..

[The Stilt]

hummm
i use 10k on X
and the max i can only go up to 2.28v....
my board is 304..

That seems pretty weird.
Did you use the same ground spot that I did?
2.7k ohms should equal 2.5V with 2.2V bios option.

[VictorWang]

That seems pretty weird.
Did you use the same ground spot that I did?
2.7k ohms should equal 2.5V with 2.2V bios option.

ya, that's right.
I'm thinking about use a 5K Ohm VR instead of 10K :D

[guess2098]

That seems pretty weird.
Did you use the same ground spot that I did?
2.7k ohms should equal 2.5V with 2.2V bios option.
yeah, i used the ground point u used
i will check it again later

[luf1c3r]

Mmm, very interesting: D
That memoirs spend, for the vdd mod?
Thank you The Stilt

[toddm27]

whats the max this board supports without the mod

[C3]

2.2v

[toddm27]

yeah I think a vmod is definatly gonna be needed then

[vanovich]

That seems pretty weird.
Did you use the same ground spot that I did?
2.7k ohms should equal 2.5V with 2.2V bios option.
is there an alternative ground ,we can use? somewhere the grabbers kan get hold on . like leg 3 or something?

[The Stilt]

is there an alternative ground ,we can use? somewhere the grabbers kan get hold on . like leg 3 or something?

The pin opposite the alternative solder point is ground.

[vanovich]

The pin opposite the alternative solder point is ground.
thanks

[vanovich]

another newbie quistion ,whats the10k, ohms on the MCH VDD mods set to?lets say i want 0,1 more volts on it?

[BarboneNet]

DDR2 VDD measuring point:

http://www.armada.fi/D975XBX/D975XBX-DDR2VDDMeasure.jpg

Hi The Stilt,

your rilevation point isn't correct for me!!!! (exccedes by +0,45v of real)!

the correct rilevetion point is this:

http://www.webalice.it/bairam/misureVdimm.jpg

[Hardass]

The pin opposite the alternative solder point is ground.

Opposite in which direction? Could you mark it on the pic for us rookies please??:)

[bachus_anonym]

Opposite in which direction? Could you mark it on the pic for us rookies please??:)Up, on first photo. It's Pin4 (GND) on SC2612E (http://www.semtech.com/pc/downloadDocument.do?id=7#search=%22SC2612E%22).

If you want, you can double-check for yourself by poking around with a multimeter, while system is OFF, using Continuity feature of your DMM - put black probe to ground (e.g. screw hole or other ground you know) and touch that Pin4 with red probe. If it beeps, then it means circuit is closed, which confirms what you need ;)
If your DMM doesn't have this feature selectable (beeping), which I doubt, you can still do it by simply switching it to Ohm Mode and doing the same thing described above. If circuit is open, DMM will show Infinity and If it's closed (which confirms ground, in this case) it will show a reading of 0 Ohm.