- Joined
- Dec 20, 2001
Official 7900GT Volt Mod Thread.
I think the picture speaks for itself, but a little information to avoid confusion.
All that you need to do is connect one of the two points, or both to achieve an overvoltage on the card. ***NO OTHER MODIFICATIONS REQUIRED***
Connecting Yellow point to ground will give you +0.1v or 1.3v vGPU, can be verified at the red point marked out on the card.
Connecting Orange point to ground provides +0.2v or 1.4v vGPU, can be verified at the red point marked out on the card.
Connecting both the Yellow and Orange point to ground provides +0.1v & +0.2v or 1.5v vGPU.
Personally I would not run more than 1.4v on stock cooling, temps will be rather high, and I wouldn't expect the card to scale well at all.
It is possible to achieve 0.05v as well, but to keep this simple I have left it out. Most people will be modding to 1.4v on air, and 1.5v on water. It is also possible, with the removal of componets to achieve grater than 1.5v. I would highly suggest not going over 1.5v unless you are running water cooling at a minimum.
1.4-1.5v with good cooling should provide the ability to clock up to, or over 700mhz core on these 7900GTs.
7900GT 1.5v Hard Mod.
First locate this area on the top left of the card. This is where we will be working.
Once you locate that area, the resistor in the top left above u502 needs to be removed and replaced with a 50k resistor.
This mod can be used in conjunction with the above 'ink' mods to increase voltage beyond 1.5v. There are also OCP resistors, and a bucket mod. I'll add those on later today.
I think the picture speaks for itself, but a little information to avoid confusion.
All that you need to do is connect one of the two points, or both to achieve an overvoltage on the card. ***NO OTHER MODIFICATIONS REQUIRED***
Connecting Yellow point to ground will give you +0.1v or 1.3v vGPU, can be verified at the red point marked out on the card.
Connecting Orange point to ground provides +0.2v or 1.4v vGPU, can be verified at the red point marked out on the card.
Connecting both the Yellow and Orange point to ground provides +0.1v & +0.2v or 1.5v vGPU.
Personally I would not run more than 1.4v on stock cooling, temps will be rather high, and I wouldn't expect the card to scale well at all.
It is possible to achieve 0.05v as well, but to keep this simple I have left it out. Most people will be modding to 1.4v on air, and 1.5v on water. It is also possible, with the removal of componets to achieve grater than 1.5v. I would highly suggest not going over 1.5v unless you are running water cooling at a minimum.
1.4-1.5v with good cooling should provide the ability to clock up to, or over 700mhz core on these 7900GTs.
7900GT 1.5v Hard Mod.
First locate this area on the top left of the card. This is where we will be working.
Once you locate that area, the resistor in the top left above u502 needs to be removed and replaced with a 50k resistor.
This mod can be used in conjunction with the above 'ink' mods to increase voltage beyond 1.5v. There are also OCP resistors, and a bucket mod. I'll add those on later today.
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