7900GT Voltmod-2

[guess2098]

i saw some1 post this in coolaler forum
easy vmod to 1.4v
http://img.photobucket.com/albums/v6...asy1-4vmod.jpg

[Zenjirou]

i saw some1 post this in coolaler forum
easy vmod to 1.4v
http://img.photobucket.com/albums/v6...asy1-4vmod.jpg

That is the same thing as conecting point A to ground for .2V increase, thus 1.2+.2.

[over@locker886]

i saw some1 post this in coolaler forum
easy vmod to 1.4v
http://img.photobucket.com/albums/v6...asy1-4vmod.jpg

silicon paste is good for easy 1.4vmod??

[illuminati-hwt]

over@locker886, I didnt use silicon paste. As it says in the picture, it's conductive ink. It has to be conductive

Guess2098, original pics came from XS..
http://www.xtremesystems.org/forums/...&postcount=162
http://www.xtremesystems.org/forums/...&postcount=135

[over@locker886]

over@locker886, I didnt use silicon paste. As it says in the picture, it's conductive ink. It has to be conductive

oh, I 've made a mistake..
I wanted say : silver paste ?

[guess2098]

over@locker886, I didnt use silicon paste. As it says in the picture, it's conductive ink. It has to be conductive

Guess2098, original pics came from XS..
http://www.xtremesystems.org/forums/...&postcount=162
http://www.xtremesystems.org/forums/...&postcount=135

thx for the info, i was asking for original qutoe and he told me it is from XS too. guess i am not really pay attention with 7900gt hehehehe

[Garrett]

I'm curious what you guys get as the maximum corespeed when it's modded to 1.55v
That should be enough voltage to keep most of us happy, right?

[illuminati-hwt]

Over@locker, silver paste prolly wont work as it isnt conductive. They often remove the conductive capabilities.

[agentsmith]

Dear friends
I've followed the instructions to get +0.2V using this pen but still stuck to 540/890

http://www.decon.co.uk/english/dalo33.htm

I asked for a conductive ink pen but I tried with my multimeter and it seems not to be conductive....
could you tell me if this the case?

apart the possibly wrong pen, is it ok the work i've done?
It's not necessary to touch the BIOS, is it?

[DeToNaToR.cl]

The next picture shows the Mods to change the 1.2 or 1.5 Volt to a higher value.
C gives 0.05 Volt increase when shorted to ground
B gives 0.1 Volt increase to ground and
A gives 0.2 volt increase to ground,
Plus any combination of A, B and C.

Attachment 45297

I have given two possible routes to achieve your Vgpu increase.
Use either the upper or the lower set of traces.
When you only use the red trace, you will have 0.05Volt increase. (1.25V or 1.55Volt)
When you use Red plus Yellow, you will have a 0.15Volt increase (1.35Volt or 1.65Volt)
When you use Red, Yellow plus Purple, you will have a 0.35Volt increase ( 1.55Volt, do not use it in combination with the 50Kohm resistor mod)
Of course you can also connect a single point to get what you want, f.i. ground point B to get 1.4Volt.
Although a bit more difficult to achieve, it is still doable.
Go with conductive ink with a large U around all the other points towards ground.

i saw some1 post this in coolaler forum
easy vmod to 1.4v
http://img.photobucket.com/albums/v6...asy1-4vmod.jpg

What happens if I make both mods?

When you only use the red trace, you will have 0.05Volt increase.
When you use Red plus Yellow, you will have a 0.15Volt increase
When you use Red, Yellow plus Purple, you will have a 0.35Volt increase

Example
1,4v Mod + Red + Yellow + Purple will be 1,75v?

[tieros]

Great post! I can't wait to give this a try.

Just wanted to point out a typo in the OP. In the second part of the post is the line "Of course you can also connect a single point to get what you want, f.i. ground point B to get 1.4Volt. ", but B is the +0.1V pin, not the +0.2V pin.

I'm going to start with 1.4 and see how high she'll go

[***Deimos***]

Dear friends
I've followed the instructions to get +0.2V using this pen but still stuck to 540/890

http://www.decon.co.uk/english/dalo33.htm

I asked for a conductive ink pen but I tried with my multimeter and it seems not to be conductive....
could you tell me if this the case?

apart the possibly wrong pen, is it ok the work i've done?
It's not necessary to touch the BIOS, is it?

your mod looks correct. If the ink is conductive, when you measure the resistance between those two points, it should be very low (ie near 0). Otherwise, the ink is not conductive.

I am also curious why it is blue.. it looks like just a regular marker.. you cant use that. It must be a conductive-ink pen. Go to car hardware store, and ask for car defrost repair kit... the king you use to repair the thin defrosting elements on windshields.

[alpha0ne]

I am also curious why it is blue.. it looks like just a regular marker..

It looks like it IS just a blue marker pen

[96redformula]

I bought the conductive writer at radioshack, it did the work but was a pain. You have to be carefull because the ink just suddenly gushes out sometimes! I had a close call where it gushed out and had to rush to get a napkin to wipe it off clean. On a positive note this is definatly a reversable mod that can later be easily removed.

[Nosfer@tu]

I bought the conductive writer at radioshack, it did the work but was a pain. You have to be carefull because the ink just suddenly gushes out sometimes! I had a close call where it gushed out and had to rush to get a napkin to wipe it off clean. On a positive note this is definatly a reversable mod that can later be easily removed.

Thats is why you use tape

[Nosfer@tu]

The look of it is almost frightening.
I can see the Vmem mod, the 50Komm Vgpu mod, the 100K Frequency mod, but I'm not sure what the red wire is with the white something attached to it.
I am surprised how well the board accepts all those long wires, they must be acting as antenna's.
But one thing is for sure, you had the guts to do it. A great achievement.

It is for a fan

I belive it is the 12 volt rail he is using there.

ViperJohn does it all the time

[Garrett]

your mod looks correct. If the ink is conductive, when you measure the resistance between those two points, it should be very low (ie near 0). Otherwise, the ink is not conductive.

I am also curious why it is blue.. it looks like just a regular marker.. you cant use that. It must be a conductive-ink pen. Go to car hardware store, and ask for car defrost repair kit... the king you use to repair the thin defrosting elements on windshields.

That costs 24 euros here at the local car parts shop here in Holland... I use silverglue which only costs 6 euros
It may not come with a little brush to apply it but a needle will do, and some tape to "show" the path for the glue to go

[mascaras]

Dear friends
I've followed the instructions to get +0.2V using this pen but still stuck to 540/890

http://www.decon.co.uk/english/dalo33.htm

I asked for a conductive ink pen but I tried with my multimeter and it seems not to be conductive....
could you tell me if this the case?

apart the possibly wrong pen, is it ok the work i've done?
It's not necessary to touch the BIOS, is it?

LOLOL that is a regualr pen , OMG you need a conductive Ink to do the MOD.

i made the 1.4v today i mesure with multimeter aand i got 1.39v

[Garrett]

LOLOL that is a regualr pen , OMG you need a conductive Ink to do the MOD.

i made the 1.4v today i mesure with multimeter aand i got 1.39v

That's not enough LOL.... make it 1.55v and search your maximum corespeed
You're on watercooling for crying out loud

[mascaras]

That's not enough LOL.... make it 1.55v and search your maximum corespeed
You're on watercooling for crying out loud

yep its the next step

[DeToNaToR.cl]

Again, what happens if i make the "easy 1,4v mod" + the red yellow purple mod... will i get 0.2 + Yello + Purple + Red? 0.55v+??

[agentsmith]

Today I went to the supplier and the guy confessed he didn't know what was a conductive pen, and asked to a colleague.
They had silver and copper conductive paint, I went to the cheaper one since it's not supposed to carry a lot of current...
anyway I'm not sure it went done: the paint wouldn't stick a lot to the surface and comes away easily when you remove the scotch used as a mask...
I have increased the freq from 540 to 610, showing bizzarre behaviors: arctifacting, a little hesitation, some 3DMark crashes and after it run without arctifact.
Does nVidia driver roll back to lower frequencies if you pushed it too much?
For what I read in the previous posts, the vmod would work from beginning, so any BIOS mod is not needed, isn't it?
Anyway I'll try with a multimeter even if I'm a little afraid with all those lilliputian pins and traces on the pcb....

Thank you all for the patience but this is my first vmod, even on a brand new expensive card like this - not as the GTX, this for sure

[mascaras]

yes. nvidia roll bak to default frekuencies when you push to hard .


regards

[tortiator]

i make the easy 1,4 md it works (1,392 ) now how can i get easy 1,50 or 1,55
it that the right way???

[DeToNaToR.cl]

if I make that 1,55v do i need to remove the overcurrent resistor?