Gainward 6600GT Vcore/Vmem Mod Request

Hi i'm searching for a Vcore and Vmem Mod for this card:

http://www.desertshooter.nl/6600GT_ic's.JPG

If you need any more info, just ask ;)

Measure the voltages on pin8 of the RT9214 ICs. Also, a pic of the front of the card would be useful.

Don't know which one is pin 8 so did this 4 :D

http://www.desertshooter.nl/RTpin8.JPG

Don't have a digicam so can't take any pics of my own card but this is a pic from the front from annother one

http://home.no/datamods/6600GT/Thumbs/Front%20thumb.JPG

Hi,

Is there the same code 'RT9214'-code in both chips ?

I wonder those are regulators by richtek, and 'interesting node' should be #6. (BTW, In RT9214 regulator there should 0.6 V in that node..)

http://www.richtek.com/Product/Docs/DS9214-06.pdf

I marked those pins with yellow in figure below. The output voltages are found most likely in some of the points you marked, I think the nodes marked with purple below are Vmem and Vcore (?).

Modding of RT9214-regulator is quite simple: connect high value e.g. 50 kohms variable resistor between a 'yellow' node (=FB, pin #6 in datasheet) and GND. Lower resistance = higher output voltage. E.g. green nodes are GND, but GND can be found also several other places in card.


http://img22.imageshack.us/img22/979/sb6ig.th.jpg

Oke thanks man :D
I will try it asap :)

Mods and measure points are as SikaRippa suggested ;)

http://img95.imageshack.us/img95/6062/sb6ig7yq.th.jpg

Oke thanks. But does it has to be 50K VR. Atm I only have 10k and 20k pots in stock :p:

Did the VDDR mod with 20K VR and it works fine :)
Only the result is less :(

Without Vmod: 1180
With Vmod: 1220

Maybe some other cooling will work.
Vgpu mod comming up, just as pics :D

Here a some pics of Vmod for now. VDDR Measure point did stick very good so isn't on now.

Sorry for bad quality. Is with webcam.

http://www.desertshooter.nl/Cam00004.bmp

http://www.desertshooter.nl/Cam00006.bmp

Man you got me scared, why are you using wires this thick on that pot???
I understand the mesure pts but dude, be careful!

Suma.

O lol. I did use the hole wire ;)
Only some little lines of the hole wire :p:

And what does it matter how thick the wires are. The thicker, the better i think?

For the ones how want to, some pics of the Vcore Mod too:

Sorry for bad quality

http://www.desertshooter.nl/Cam00016.bmp

http://www.desertshooter.nl/Cam00017.bmp

results?