7900GT Voltmod-2

[ryankenn]

I have tried to bundle all the wisdom of previous mails in the pictures plus the explaination below.


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.



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 C (sorry for the earlier typo) to get 1.4Volt.

I'm planning on using the mod to get 1.55V on my Thermalright V-1 Ultra cooled BFG, but reading through the various posts I just want to verify what I'm seeing/reading.

It seems like the easiest way would be to straight shot the bottom row ( inside my blue box ) to the ground point, but I have yet to see anyone go that way, most loop over the top. Is there a particular reason for this? It looks like the straight line of the bottom route is so much easier.



Second, in the description given, I would believe that connecting the purple line ( Point A ) would give a 0.2V increase, resulting is 1.4V on a previously un modded 7900GT. But this would have me shorting Point A to a point right next to it, AND then to ground. Most of the mods I've seen only go from Point A to ground, and aren't shorting to the pins next to it. I'm assuming it will work either way, just curious. Also you give an example of Shorting a single point to ground, Pt C in for F.I to get 1.4V, but from above, I though that should give only a 0.05V increase. Just a typo?

Here's the route I see the most, and it just straight point A to ground, no shorting to the pin nextdoor.



Thanks,
Ryan