7900GT over voltage protection?

[t024484]

I'm afraid it won't be much easier...

BUT: If Pin 32 and pin 22 is *already* '0', why not just connect
Only pin 32 to pin 30 and 31 to get 1,350V or
Only pin 22 to pin 21 to get 1,4V or
pin 32 to pin 30 and 31 AND pin 22 to pin 21 to get 1,55V

Would that work?

Yes, this will work. Without changing the Resistor, you will have 1.55Volt.
Do not worry about burning pull up resistors as somebody suggested, these pull up resistors are very large in value.
To be more specific, the internal pull up resistors are in fact internal current sources, supplying 40UA ( 40exp-6 Amp) of current wen the input is connected to ground.

[Pyr0]

Yes, this will work. Without changing the Resistor, you will have 1.55Volt.
Do not worry about burning pull up resistors as somebody suggested, these pull up resistors are very large in value.

so there's no need to remove any resistors at all?
all that's needed is to bridge those contacts for up to 1.55v?

i'm stilll waiting for my xfx card, but if the mod is really this easy i might actually try my first hardmod

[t024484]

so there's no need to remove any resistors at all?
all that's needed is to bridge those contacts for up to 1.55v?

i'm stilll waiting for my xfx card, but if the mod is really this easy i might actually try my first hardmod

Yes, that's all there is.
On the other hand, if you are not a skilled solderer, you can, as an alternative, solder the two larger points (more on on the edge of the board) to ground, that LardArse found to be in direct connection with point A (+0.2Volt) and B (+0.1 Volt) . That will give you up to 1.5 Volt

[t024484]

LardArse,
Why do you think that the two resistors indicated in some picture from you, remove the current limit. Where are these resistors connected to?
According to the chip supplier the current limit is set with a resistor between point 10 and point 11.
This is just one resistor instead of two.
On the other hand, there is no mentioning until now if the current limit comes into action at all with the higher Vgpu.
I would have expected that to happen with 1.5Volt and 750 Mhz.

[***Deimos***]

Yes, that's all there is.
On the other hand, if you are not a skilled solderer, you can, as an alternative, solder the two larger points (more on on the edge of the board) to ground, that LardArse found to be in direct connection with point A (+0.2Volt) and B (+0.1 Volt) . That will give you up to 1.5 Volt

On his diagram he has 1.6V and 1.7V. I assume thats because he's using the VRM9 codes (aka replace resitor with 50K). Also, since I dont have a 7900GT (yet), could we get a better zoom shot of that area... where exactly is that in relation to the IC pic of the front?

thanks t024484, and of course everybody who all helped defeat the OVP

I dont think Cronic did the over-current protection, and he's well past 650Mhz. I dont think its needed up to 700Mhz.. not sure when? Not defeated over-volt protection really, since cant disable it.. just different way of over-volt mod... now in 2006 its digital :p