MSI 7900GTO Vmem mod

[stingush]

hi.. i got a 7900GS standing on 670/1760 for games..
now its getting 83c on load.. is that ok?(vgpu 1.45V)
im using stock cooling + 80mm fan stucked to the original hitsink
on idle its 52c...

[Nosfer@tu]

hi.. i got a 7900GS standing on 670/1760 for games..
now its getting 83c on load.. is that ok?(vgpu 1.45V)
im using stock cooling + 80mm fan stucked to the original hitsink
on idle its 52c...

That has nothing to do with this thread

[stingush]

i know but no1 is answering me on the other threads
edit : the card is on 88-89 @ full load by atitool... is that fine? can i work 24/7 like this in games?

[SF3D]

Nosfer@tu- Thanks for saying that!

-stingush..
Go to general hardware-->video cards
You can find answers there. This thread is only for 7900GTO mods.

(And by the way..your card is running too hot)

[jVIDIA]

SF3D, what was your gain between OCing your GTO with the pencil mod and without ?

[SF3D]

From (1.82V)1700MHz stable --> (2.05V)1940MHz stable. Mem can do 2GHz but there are artifacts and scores are lower.

Haven't done Vgpu mod yet. It might help me to go over 2GHz

[Cyba_Mephisto]

From (1.82V)1700MHz stable --> (2.05V)1940MHz stable. Mem can do 2GHz but there are artifacts and scores are lower.

Haven't done Vgpu mod yet. It might help me to go over 2GHz

?
Why can more VGPU help your card with ocing?

[m0rphaza]

Hello guys.

Ive read basicly this hole thread. And decided yesterday i should see what happend to my MSI 7900GTO if i voltmod the memory and overclock it some. At stock my card didnt overclock that well i reach about 1.5 Ghz om the memory and when i modded it to 2.0 volt i was dissapointed. I only reach about 1.58 and that gives artifacts.

So basicly i cant even get to 1.6 Ghz on the memory in riva tuner. I checked the memory and its the BJ11 ones rated 1.1ns, 900 Mhz and 2.0 volt. I cant seem to figure this out. Can you guys give me some suggestions?

Im gonna try a 580w Hiper PSU now to see if my old Aspire 500w is too weak.

Best Regards, m0rphaza

[m0rphaza]

Change of PSU didnt change a thing. i reach about 775 on the memory to the best. Over that and it fails to use that frequency riva tuner tells me.

[Cyba_Mephisto]

Change of PSU didnt change a thing. i reach about 775 on the memory to the best. Over that and it fails to use that frequency riva tuner tells me.

Maybe the temperatures are too high...

[Nosfer@tu]

Change of PSU didnt change a thing. i reach about 775 on the memory to the best. Over that and it fails to use that frequency riva tuner tells me.

Lower your Mhz on the GPU or give GPU more volt.

[m0rphaza]

Maybe the temperatures are too high...

Temps is 39 - 41 on GPU Idle so i dont think thats the problem. Dont know the temps on the memory though, but that wouldnt be a problem.

Lower your Mhz on the GPU or give GPU more volt.

Allright, ill start with a lower GPU volt. The gpuvid voltmod seems abit advanced its the first time i ever try voltmod anything so i dont want to solder.

[SF3D]

The gpuvid voltmod seems abit advanced its the first time i ever try voltmod anything so i dont want to solder.

There is no VID Vmod for GTX or GTO. You should do Vgpu mod with variable resistor.

[m0rphaza]

I reseted all overclock and voltmodding and was about to accept the fact that my card wasnt gonna overclock.

I got an advise from a guy at sweclockers forum that i should change GTO bios. So i changed from .15 to .09 and changed to 91.47 from the 93 drivers. This resulted in that my clock now reaches about 820 with stock voltage. Before my memory stopped at 780 with 2.0 vmem volt mod.

This makes me wanna make my voltmod again, but i think im gonna wait til after DreamHack (10,000 ppl LAN in sweden) cause i dont wanna be there if my GFX card is broken

Hope my discovery helps other people having problems

[Garrett]

from .15 to .09

[m0rphaza]

from .15 to .09

I changed GTO bios to 05.71.22.39.09 from 05.71.22.39.15. That eliminated all my problems.

[Cyba_Mephisto]

I changed GTO bios to 05.71.22.39.09 from 05.71.22.39.15. That eliminated all my problems.

I can´t find 05.71.22.39.15. Can you upload that somewhere and give me the link please?

[Kamel]

PAY ATTENTION AIRCOOLER

Look @ theese pics...

Look particularly @ the six fets on the left.
They are taller than the other so the Black HS doesn't touch them @ all.
HORRIBLE!!!

I use liquid cooling, so i modified a TT ram cooler to fit! Have an 8x8 blowing on it!


Here u can see the HS i'm talking about!



Look @ the upper thermal pads... NEW!



...And then the components i'm talking about!!!




SOLUTION!

Here is the TT HS cut in two pieces!



Chomerics Thermal Pad



First piece in place!



...THE END...






Hope it can HELP!

bye

Kam

[Transonic]

^ Great mod you got there. I was gonna put some AS5 on mine until I noticed one row sat lower than the other two. I'm gonna give this a try.

btw, I'm running 690/750 on water w/o mods vmods.

...but I wanna get the memory up higher.

[m0rphaza]

^ Great mod you got there. I was gonna put some AS5 on mine until I noticed one row sat lower than the other two. I'm gonna give this a try.

btw, I'm running 690/750 on water w/o mods vmods.

...but I wanna get the memory up higher.

Check what bios your card has. You should have the bios ending with .09 to make it overclock best.

[Cyba_Mephisto]

How did you cut this heatsink?
You can get rid of this black thing, too.
Then you can polish it. It helps.

Noooooo!
, I´ve as5ed them!!!!
How did you cut this heatsink?

[Kamel]

First i cut it with a Dremmel..then i finish it with a file.

tha'ts all..

Kam

[Cyba_Mephisto]

First i cut it with a Dremmel..then i finish it with a file.

tha'ts all..

Kam

How long did you need?

[Transonic]

Check what bios your card has. You should have the bios ending with .09 to make it overclock best.

I'll check that out tonight and see what I got. Anyone tried out this bios?
http://www.xtremesystems.org/forums/...d.php?t=117064

Maybe I should read it again but is that a GTX bios or a modded GTO bios?

[Kamel]

About 40 minutes! for all the job
!!