Nvidia 8800GTS Vmods

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12-12-2007, 09:23 PM
denden

oh yeah thks a lot, while I still go for a try of the glue, will source it in hardware shop later....will post if success

Quote:

Originally Posted by TraX

My soldering skills are not great either, I use this 'conductive paint' method instead. >here<

Hope it helps :)
03-03-2008, 05:37 AM
runmc

Quote:

Originally Posted by ViperJohn

Your tracing to the left of your red "X" is the same on the GXT although no automated test point pad exists in between the mod target SMR and the SMC to the left (wish it did have that pad to solder to!). Viper

Has anyone with a GTS soldered to the empty test pad to the left of the red dot with success?

http://www.xtremesystems.org/forums/...2&d=1163535430
03-03-2008, 05:46 AM
wittekakker

jup, me :)
03-03-2008, 06:06 AM
runmc

Quote:

Originally Posted by wittekakker

jup, me :)

Is your card still running?? :ROTF:
03-03-2008, 06:34 AM
wittekakker

Quote:

Originally Posted by runmc

Is your card still running?? :ROTF:

On a daily base, sir :up:
03-08-2008, 07:34 PM
JamesBong420

for anyone wanting to get over that damn OVP on these cards. the ovp for the g92 gts works for these as well. im still testling but i am now 100 percent black screen free at what ever the volts. i will post some results as soon as im done messing around.
http://www.techpowerup.com/articles/.../vidcard/149/5
link to the ovp mod.:up:
03-08-2008, 07:52 PM
ViperJohn

Quote:

Originally Posted by JamesBong420

for anyone wanting to get over that damn OVP on these cards. the ovp for the g92 gts works for these as well. im still testling but i am now 100 percent black screen free at what ever the volts. i will post some results as soon as im done messing around.
http://www.techpowerup.com/articles/.../vidcard/149/5
link to the ovp mod.:up:

That is OCP (Over Current Protection) not OVP (Over Voltage protection) and one of my customers
posted those mods here at Xtreme Systems months ago.

Viper
03-08-2008, 07:57 PM
JamesBong420

Quote:

Originally Posted by ViperJohn

That is OCP (Over Current Protection) not OVP (Over Voltage protection) and one of my customers
posted those mods here at Xtreme Systems months ago.

Viper

cool man. all i saw was
http://images.people.overclockers.ru/141832.jpg
and the OCP mod for the g92. i did not find anything when i used the search tool for xs. so sorry if i posted useless info. :cool:

edit: im a noob "OCP". i was looking for ovp. well at least i figured it out without looking at that post
http://www.xtremesystems.org/forums/...ht=8800gts+mod
03-08-2008, 08:13 PM
NightRaven

"Note that OCP mod does not increase your overclock unless your card actually is limited by OCP"

this is very true guys. i didnt do the mod for my card since i wasnt ocp limited as well.
03-08-2008, 08:42 PM
runmc

Quote:

Originally Posted by ViperJohn

That is OCP (Over Current Protection) not OVP (Over Voltage protection) and one of my customers
posted those mods here at Xtreme Systems months ago.

Viper

Quote:

Originally Posted by NightRaven

"Note that OCP mod does not increase your overclock unless your card actually is limited by OCP"

this is very true guys. i didnt do the mod for my card since i wasnt ocp limited as well.

How do you know if your card is OCP limited?

With my card I reach 762mhz@1.39v I can turn volts up to 1.47v and not be able to move to the next step (778) in Riva Turner. But I never got a black screen even after 1.4v. I never felt like I was accomplishing anything past 1.39v.

Do I need to do the ovp mod or the ocp limited mod?
03-08-2008, 09:01 PM
NightRaven

well sir, gts ovp hit usually at 1.5++V and ocp even higher than that :)

so nope i dont think u need it :)

i'm at 1.49V idle and no ovp or ocp for me. but cap mods do help somewhat. i felt the card was more stable with the added caps

i will post my scores and results soon as well as some pics :)

add: ovp = up volts in idle till screen hits black... ocp = black screen only under LOAD.
03-08-2008, 09:25 PM
runmc

Quote:

Originally Posted by NightRaven

well sir, gts ovp hit usually at 1.5++V and ocp even higher than that :)

so nope i dont think u need it :)

i'm at 1.49V idle and no ovp or ocp for me. but cap mods do help somewhat. i felt the card was more stable with the added caps

i will post my scores and results soon as well as some pics :)

add: ovp = up volts in idle till screen hits black... ocp = black screen only under LOAD.

I will hold off on doing those mods. Does adding the caps help reduce vdroop? Pictures will be nice :up: I'm setting my goal at 100k in 3DMark01, so I might need some help I'm in the mid 80s now. I've got a long way to go. Okay 90k will be my first goal :D

thank you
Ron
03-08-2008, 10:32 PM
JamesBong420

i have an 8800 gts 640 rev a3. the ocp mod i posted allowed me to go from having a 700mhz wall where i just blacked out no matter the volts. and now after that i can do 729mhz 1.41v 756mhz im wokring on..
03-09-2008, 04:19 AM
wittekakker

Quote:

Originally Posted by runmc

I will hold off on doing those mods. Does adding the caps help reduce vdroop? Pictures will be nice :up: I'm setting my goal at 100k in 3DMark01, so I might need some help I'm in the mid 80s now. I've got a long way to go. Okay 90k will be my first goal :D

thank you
Ron

I've done my OCP mod few days back, to my surprise it really helps a lot. I used to have problems running my card at over 650MHz core, with the memory clocked past 1050MHz. Using up to 1,5V didn't help, lowering the GPU core temperature by using chilled water didn't help either, the Over Voltage Protection mod posted by Hipro5 did not help, adding caps did not help, ...

But now, with three 1kOhm resistors added I can easily run my card over 700MHz with the memory up to 1100MHz. For my card the OCP mod is more inportant then the OVP mod: http://www.madshrimps.be/vbulletin/f...tml#post165639
03-09-2008, 04:33 AM
NightRaven

Quote:

Originally Posted by runmc

I will hold off on doing those mods. Does adding the caps help reduce vdroop? Pictures will be nice :up: I'm setting my goal at 100k in 3DMark01, so I might need some help I'm in the mid 80s now. I've got a long way to go. Okay 90k will be my first goal :D

thank you
Ron

haha yup 100k is a goal too.. :)
03-09-2008, 04:35 AM
NightRaven

oh ya anyway i am talking about a 320mb i'v got :)

not the 640mb or my 512mb

just in case people get confused.
03-09-2008, 05:29 AM
runmc

Quote:

Originally Posted by wittekakker

I've done my OCP mod few days back, to my surprise it really helps a lot. I used to have problems running my card at over 650MHz core, with the memory clocked past 1050MHz. Using up to 1,5V didn't help, lowering the GPU core temperature by using chilled water didn't help either, the Over Voltage Protection mod posted by Hipro5 did not help, adding caps did not help, ...

But now, with three 1kOhm resistors added I can easily run my card over 700MHz with the memory up to 1100MHz. For my card the OCP mod is more inportant then the OVP mod: http://www.madshrimps.be/vbulletin/f...tml#post165639

Did you use small 1kohm resistors that solder right to the top or side or did use use variable resistors? Do you have a picture? I have seen pics of resistors soldered right to the top or side of the caps. That would be best for me.

I have an EVGA 640-P2-N829-AR GeForce 8800GTS SSC 640MB 320-bit GDDR3
03-09-2008, 07:04 AM
wittekakker

Quote:

Originally Posted by runmc

Did you use small 1kohm resistors that solder right to the top or side or did use use variable resistors? Do you have a picture? I have seen pics of resistors soldered right to the top or side of the caps. That would be best for me.

I have an EVGA 640-P2-N829-AR GeForce 8800GTS SSC 640MB 320-bit GDDR3

I soldered them on top of them yes, I didn't use SMD, I used normal size resistors which are not that easily to solder on those small SMD caps.
Don't have the card around at the moment, can't shoot pictures now but I'll post them later on.
03-09-2008, 10:27 AM
runmc

I just noticed if I have my core volts at 1.4v I can run 762/1057 with no problems, but if I increase volts upward to 1.47 - 1.49 I can't run at 762/1057 - System freezes.

Would something like this work? I ordered some - I hope they are okay.

thanks :)

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