6600 (Non-GT) Volt Mods

[seaman]

Thanks nodak.I'll compare with mine and also I'll send it to the guys over at MVKTech.
It will help since there are no bioses for 256Mb cards

[seaman]

nodak,your bios is identical with mine.

[nodak]

Yes I know there is no BIOS for 256MB cards.

[seaman]

You should have told me.I would have not insisted that much.
Tell me than,what is different if you have 2.69V memory voltage,and I have 2.59V.Just a rezistor?Other cards seems to have only 2.5V

[over@locker886]

How to vmod for my card? I have Eagle 6600 128MB AGP with 3,6ns samsung memory.
My card have +connector!!
Max. clock:510/665, stabil.
How to change 6600 id to 6600GT? Nibitor 2.0a doesn't support my card.

[seaman]

Go to page 1 of this thread.If the layout of your card is same with the layout of Sparkle card,look for R87 a do the pencil trick.
What you need for to change ID?

[seaman]

How to vmod for my card? I have Eagle 6600 128MB AGP with 3,6ns samsung memory.
My card have +connector!!
Max. clock:510/665, stabil.
How to change 6600 id to 6600GT? Nibitor 2.0a doesn't support my card.

Would you be so kind and post your bios for developers of NiBiTor?
And the link of the card manufacturer.

[over@locker886]

My layout not same as Sparkle.
I red somewhere, so 6600GT id +400 score in 3DMark03.
Card manufacturer : www.espco.com, but I didn't found agp version.

[seaman]

Try this if it match your card:
http://www.xtremesystems.org/forums/...ad.php?t=56779

[seaman]

nodak,I posted question about mem voltmod in another forum here:
http://forums.vr-zone.com.sg/showthr...646#post653646
got an answer to measure on LM393.I will try but you can try too and see what results we have

[nodak]

did U move in that volt mod?

[seaman]

I did measured on LM393.Got 3.32V on pin 2 and 4.98V on pin 6.
I posted rezults in the other forum and I am waiting for advice.I told you that I'm not good with electronics,so I can only wait.
I took a picture of the card in the area where LM393 is but I can not post it in that forum for some reason.

[seaman]

It looks like 6600GT cards need a single volt mod,wich will allow rising of both core and memory clock.This I observed reading articles about volt modding Gainward 6600GT PCI-E and Inno3D 6600GT AGP.Only vcore is targeted but after the mod,mem clock could be rised too.
Now,Inno3D has a layout more like PCI-E cards but is still AGP.Poor me,I can not understand how is this posible.
Lucky,GT owners !

[nodak]

where exactly is LM 393?

[seaman]

where exactly is LM 393?

LM393 is the 8 leg chip in the right lower corner of the card near the soldering points of the molex conector.

[maturin]

I guys I need some help, I got this card Geforce 6600 Agp 128 Mb PEAK, it is different from the other I seen here.
Can you help me to find the right resistor to pencil to give more volt ?

The images are not good but I hope they help.

Thanks

[seaman]

Sorry,I can not help you because I don't have the skills for electronics,but you can try in the forum at http://www.vr-zone.com/ or in this forum.
Unfortunately there are already to many layouts for this cards and each one is modded in a different way.

[nodak]

LM393 is the 8 leg chip in the right lower corner of the card near the soldering points of the molex conector.

and what about the pin 6???is it V out or what?

[seaman]

Acording to the data sheet,is an input.That guy Shamino at VR-Zone forums asked me to measure pin 2 and 6 with the ground.
You can have a look here:http://forums.vr-zone.com.sg/showthr...646#post653646
I send you data sheet.

[seaman]

Just found this schematic for LM393 pinout:

Pinout for the LM393 and most dual opamps and comparators.

Out A 1 5 VCC
-in A 2 6 Out B
+in A 3 7 -in B
GND 4 8 +in B

[seaman]

Probably you will not understand from above.Better take a look here for pinout:
http://www.xs4all.nl/~ganswijk/chipdir/pin/lm393.txt

[nodak]

U should try one resistor near the pin1 or near 6

[seaman]

I have a little problem.I marked with yellow,the points were you measure vmem and I marked with red the points where I measure.I told you before that I don't get anything if I measure to your marks.Your marks are the legs of a capacitor,am I correct?
Now I'm in doubt if what I get is a valid measurement.I'll have a look tomorow about rezistors you mentioned.Can they be shaded by pencil?

[nodak]

Yes the points I marked are legs from capacitor.I think they can be shaded by pencil.I´ll try it today to find out if it´s working

[seaman]

Found out that rezistor near pin 1 is 1kohm and near pin 6 is a capacitor.There are other 3 rezistors of 1kohm,one of 1.5kohm and one of 3kohms around LM393.Wich one to try to shade?
The one near pin 1 with 1kohm value doe not seem likely to be the one.