Sparkle 8800gt Voltmod - no reference design?!

[HitandRun]

How about posting some close up pictures so we know what we dealing with!

[Heinzkopf]

Hi,
yea sorry I forgot to take some

Here are 2 pics of my Sparkle 8800GT with (slightly modified) Artic Cooling Accelero S1- had to make it fit into my case:






The original Cooler was this one:



Background is I want to overclock the card as much as possible,
with BIOS vmod i only could change the vGPU Load to 1.1V which allowed me to set the GPU to 680Mhz.
1Mhz more and i have artifacts.

With the accelero (and 120mm fan blowing) the temperature doesnt exceed 50°C- so i have much space for higher voltages

First it would be nice, if someone could show me the + measure Point of vGPU Voltage. That i could check the actual vGPU (must be 1.1V) and see if the BIOS accepts higher voltages than 1.1V (i dont think so, because with 1.17V set to BIOS i didnt achieved better OC results.. so it must still stay to 1.1V)

BIG THX and sorry for my bad english

[largon]

vGPU can be found from these red points - possibly also vMEM (which would be the one farthest from PCIe connector) but I can't be sure since the HS completely blocks the frontside pic.


The highlighted chip, what's the label on it?

[Heinzkopf]

Hi,
the chip's label should be
L6713A
990TS VH
MYS 99 729
(but u can read it now on the pics below)


Here are some more detailed pics of the front with heatsink removed:






And here of the back, especially from the areas that may have sth to do with voltage





Sorry for the big filesize, but i didnt change the resolution because I think the more information u get the better u can help me

I tried to measure the vGPU with the red dots u pointed to- well i got the result of 1.8V (!) -
Did i do sth wrong´?! i connected the black cable of my multimeter to the case (which should be ground?!) and then put the red on the dot on the picture..
(I get this 1.8 Value on every big red Pin u showed me..)(