Volt Modding Nvidia Ti4200

[SSJ5]

Hi i have the Prolink nvidia ti4200 128mb agp8x video card and i want to vmod it:banana: .

The smds marked with RED are:

IOR(?) 047A
6A6T
7811A

The SMD marked with BLUE is:

SC 3.3
1541CS
0239

and the one marked with GREEN is:

SC2602S
0237
G30436-3

I think the smd that needs to be modded is the one marked with Green, as it says "Synchronous Voltage mode controller".
The datasheet can be found here:
http://www.semtech.com/pc/downloadDocument.do?id=225

The datasheet says that PIN 11 is voltage sense input and PIN 14 the GND
I should connect those two pins with a resistor? How much resistance should it have?

PS: Sorry for the quality of pictures. If there is any problem tell me to take them again...

[SSJ5]

Anyone?

[[Viru$]]

IOR(?) 047A
SC2602S

SC2602S - analog of SC1102CS

http://www.alldatasheet.com/datasheet-pdf/view/SEMTECH/SC1102.html

Pin №11 and GND, i think 20 kOm variable resistor will be OK

IOR(?) 047A - IOR it is "IRU". But what number?

[SSJ5]

it says

IRU (if it's iru) 047A
6AT
7811A

[SSJ5]

Well i think that the only chip i need is the SC2602S. With a resistor between those 2 legs i am ok?

[[Viru$]]

***
IRU (if it's iru) 047A
6AT
7811A
***

may be it is IRU3047?

http://pdf1.alldatasheet.com/datasheet-pdf/view/100617/IRF/IRU3047CW.html

Can you post a big picture of that chip?

***
resistor between those 2 legs i am ok?
***

Yes, OK

[funkflix]

The resitance between ground and pin 11 is about 7,8kOhm, so a 10KOhm pot will work too? (SC2602S) If not i will make two of them in row.

[roger_h99.nor]

Here you go:
http://www.techspot.com/tweaks/geforce4-vmod/index.shtml

Pay attentiom to the lapping of the core - its not flat by default at all.

I did this a few years ago (lapping & voltmod) - as far as i can rembemer it yielded very good results.

Regards, r.-

[funkflix]

Thx, but i know this page, it was just bcs. of the different IC i have on my card, but now i know i must use an > 100kOhm pot. :)