MSI 7900GTO Vmem mod

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10-30-2006, 11:27 PM
aspstein

Now this is a good GTO card ;)

Modded using vr on booth Vmem and Vgpu.

http://www.diskusjon.no/index.php?ac...post&id=109061

But the same problem as everybody else. I just get artifacts when going over 1,95V :(
10-31-2006, 01:03 AM
Alexandrus

Nice clocks, but how are your temps ? I am interested in the GPU and mem temp.
10-31-2006, 01:09 AM
aspstein

Gpu is cooled using pot and dry ice. Temp is about -50C on GPU.

I touched one of the memchips with my finger when running 3dmark06, and its coold. So i guess its ok ;)
10-31-2006, 01:32 AM
Alexandrus

Oh, OK, I thought you're using the stock cooler.
10-31-2006, 02:42 AM
luismenendez

Quote:

Originally Posted by rpg711

nice mod
i may want to get a 7900gto now... too bad us usa folks cant get msi ones, only evga
for all the people that say their card overheats (thinking this is like most other vid cards) and cant overclock that high, ur wrong
u run into voltage problems waaay before u run into temp problems
just wanted to make something clear to some guys that say their card always overheats

don't complain about USA can't get MSI ones. We can get it in the UK but they are 30% more expensive like any computer component here in Europe. I wish we have pc parts as cheap as USA!!!! I am after an opteron 170 in the UK and they cost over 400 dollars here :mad:

BTW my MSI cost me about $306 (£170) + delivery, you can get evga in the USA for about $250
10-31-2006, 04:45 AM
Cyba_Mephisto

Quote:

Originally Posted by aspstein

Now this is a good GTO card ;)

Modded using vr on booth Vmem and Vgpu.

http://www.diskusjon.no/index.php?ac...post&id=109061

But the same problem as everybody else. I just get artifacts when going over 1,95V :(

:woot: !!!
How do you cool it?
What V-Mod for GPU do you have?
:slobber: :slobber: :slobber:
10-31-2006, 05:10 AM
Alexandrus

He said above, read the topic before posting, don't just look at the pics ;)
Dry Ice ;)
10-31-2006, 05:13 AM
Cyba_Mephisto

Quote:

Originally Posted by Alexandrus

He said above, read the topic before posting, don't just look at the pics ;)
Dry Ice ;)

Sry, the OC results made me crazy...

I hope SF3D gets his GTO back...
We need SF3D!
We need the V-Mod!
10-31-2006, 05:20 AM
Alexandrus

The vmod is easy, just use a pot.
10-31-2006, 06:46 AM
SF3D

Quote:

Originally Posted by Alexandrus

The vmod is easy, just use a pot.

You are absolutely right.

I can confirm now that there is no VID vgpu mod for this card. So if you want to mod it, use variable resistor.

I would like to know, how much more mhz you guys get after vmem mod.

Example (not my card ):
Stock V / 820MHz
1.95V / 850MHz
2.05V / 880MHz
10-31-2006, 07:09 AM
Cyba_Mephisto

Quote:

Originally Posted by SF3D

You are absolutely right.

I can confirm now that there is no VID vgpu mod for this card. So if you want to mod it, use variable resistor.
I would like to know, how much more mhz you guys get after vmem mod.

Example (not my card ):
Stock V / 820MHz
1.95V / 850MHz
2.05V / 880MHz

:banana::banana::banana::banana:, arrrrgh ich dreh´ hier gleich am Rad!!!
But I can´t (I don´t know the English word) "löten";
I can´t glue it on the card.
I don´t have the tools and I´ve never done it.
What now?:( :( :(

@SF3D: Please answer all my pms. I have many questions...
10-31-2006, 12:44 PM
SF3D

2 Attachment(s)

Tested this Vmem mod myself:

Default voltage 1.82V / 1760MHz
1.91V / 1880MHz
1.98V / 1940MHz

Here is 3Dmark05:
Attachment 52483

and 3Dmark06:
Attachment 52484

Sick memory here :slobber: , wonder what they will do with 2.15V :D
10-31-2006, 01:11 PM
Alexandrus

Quote:

Originally Posted by SF3D

Sick memory here :slobber: , wonder what they will do with 2.15V :D

Most likely die from overvoltage, if not cooled properly, and the stock cooler doesn't cool the RAM as it should.
Default voltage for those BJ11 chips is 1.90V, max. is 2.00V according to Samsung's specs.
10-31-2006, 01:28 PM
SF3D

Maybe, maybe not..
GTX default voltage is 2.15V. There is only little chance, that these chips could not handle it.

Going to try it later.
10-31-2006, 01:38 PM
Alexandrus

Old GTX with Samsung BJ11 had some problems with ram chips causing artifacts after some time, now the GTX uses Infineon 1.2ns RAM for this reason.
The Samsung BJ11 is supposed to be good for 900MHz(1800MHz DDR) with 2.00V, I looked up the sepcs. It used to be 1.90V default(1.80V min and 2.00V max), or I must have looked at something different, dunno.
http://www.samsung.com/Products/Semi...K4J52324QC.htm
Anyway, I hop none of us have such problems with the memory chips ;)
10-31-2006, 03:28 PM
higgins

Confusing thread indeed. So i recon there is a pencil vmem mod that works? My mem goes up to 880 stock V and cooler artifact free, would be fun to see how high it would go with 1.9-2.0V.
11-01-2006, 07:05 AM
SF3D

I did some tests with mem (2.0V)

Speed is same 1940MHz

3Dmark 05 (13463):
http://service.futuremark.com/compare?3dm05=2299980

3Dmark 06 (7453):
http://service.futuremark.com/compare?3dm06=597018

03: 29851
01: 56669
Aquamark: 166,6

Next I have to break 2.0GHz barrier :D
11-01-2006, 09:59 AM
yotomeczek

http://www.xtremesystems.org/forums/...chmentid=52297

Is it really 200 OHm pot to ground for Vgpu mod ??
It seems yes - I check a few site ...
11-01-2006, 01:43 PM
SF3D

Yes it is. Value of that resistor is only 25 ohm. 1ohm lower= 0,1V up.

First post edited. More info and clearer pictures added :fact:
11-01-2006, 02:20 PM
thehellrazor

On first post you say that the "blue" method can couse problem's with over 1.95v, is it the same thing for the pencil mod ??
11-01-2006, 03:33 PM
SF3D

I have just seen few user reports. Few members here have done it that way and results are not as good as this "red" method gives.

Of course overvolting and overclocking are almost pure luck. Extra 0.1V gives different results with every gpu or memory.

For example, I can do 2GHz (mem) with 2.08V. (results are worse than 2.0V and 1960MHz, so no bench results). Someone else could not do over 1800MHz even with 2.2V.
11-01-2006, 03:42 PM
computerpro3

Just bought this card and will be doing both vgpu and vmem mods via the soldering method.

The card I bought does 725/810 stock so it should clock well. Now my questions is which is the better cooler for handling both mods; stock or a Zalman VF900 with OCZ copper ramsinks?
11-01-2006, 03:44 PM
SF3D

My vote goes for stock cooler :D Silent and effective.
11-01-2006, 03:55 PM
computerpro3

Quote:

Originally Posted by SF3D

My vote goes for stock cooler :D Silent and effective.

Really? I would think that the Zalman could outperform it because it isolates the heat from the ramsinks and the core. Perhaps not though.

Also, may I ask why everyone is being so conservative on the voltages? I have a 7900GT doing 715/1920 on air at 1.55/2.16v which is considered safe. Temps are great. Why is everyone sticking near stock vgpu and around 2.0 for the memory?
11-01-2006, 04:53 PM
lwj5

is water cooling sufficent?

can some1 tell me whats that on the pic, doesnt look like thermal paste
http://img504.imageshack.us/img504/6...79gto11hk9.jpg
11-01-2006, 05:38 PM
cadaveca

thermal pad.
11-01-2006, 05:51 PM
lwj5

can i use thermal paste instead of thermal pad?

is water cooling sufficent?
11-01-2006, 06:31 PM
computerpro3

Quote:

Originally Posted by lwj5

can i use thermal paste instead of thermal pad?

is water cooling sufficent?

it's probably not a good idea to watercool if you don't know that.

But yes, thermal paste is better, and yes water is sufficient.
11-01-2006, 06:32 PM
lwj5

my cpu is water cool so i will add another water block

comparing stock cooling to wter cooling i think water cooling is better
11-02-2006, 03:36 AM
Renasc

I'm yet to volt my 7900's Vmem.

Does 935mhz at stock 2.02v, good samsung chips :D

I'm guessing that with 2.2v the mem should be able to top 1ghz or a bit more.
11-02-2006, 05:06 AM
lwj5

which is better is 7900GTO or ASUS EN7950GT?
11-02-2006, 05:30 AM
SF3D

Quote:

Originally Posted by lwj5

which is better is 7900GTO or ASUS EN7950GT?

This is not the place to talk about different graphics gards. Sorry :(

Let's talk about mods and results please! :D

-Renasc-
Are you talking about 7900GTO
Stock voltage is 1.82V
11-02-2006, 07:31 AM
Cyba_Mephisto

Stock cooler only runs @ 50%!
How to get 100%?
RivaTuner can´t change the cooler speed!
What now?
Sry, now I got it...
What temperatures have your RAMs and GPU?
Please answer!
And what are the timings samsung gave the RAM?

My results:
Stock: 780MHz
@1,85V: ~800MHz
@1,87V: 820MHz

Next voltage will be 1,89V.
I look what they can do at that voltage...
Then I edit my results.
11-03-2006, 04:03 PM
Kamel

I tried 2.26V on Bj11 and they make artifact in windows!!! strange little violet dots; now i understand why!

@ the moment i'm @ 2.08 for 950Mhz benchable... but only in 3dmark..

Need For Speed Carbon doesn't like memory clock ( artifacts= violet screen zones, colour change for tires ), i cannot use default gtx frequencies, i will try to go to 2.00/2.5V and see if it helps...

This is a 3dmark 2005...NO artifacts @ all with 3dmark :confused: :confused:

http://www.oclabs.com/kamel/FATTO!.jpg

Maybe i have to raise down the second resistance, but i don't know if can help...any suggestions?

Kam
11-04-2006, 01:55 AM
Cyba_Mephisto

Quote:

Originally Posted by Kamel

I tried 2.26V on Bj11 and they make artifact in windows!!! strange little violet dots; now i understand why!

@ the moment i'm @ 2.08 for 950Mhz benchable... but only in 3dmark..

Need For Speed Carbon doesn't like memory clock ( artifacts= violet screen zones, colour change for tires ), i cannot use default gtx frequencies, i will try to go to 2.00/2.5V and see if it helps...

This is a 3dmark 2005...NO artifacts @ all with 3dmark :confused: :confused:

http://www.oclabs.com/kamel/FATTO!.jpg

Maybe i have to raise down the second resistance, but i don't know if can help...any suggestions?

Kam

I don´t know what voltage will raise after penciling the right resistor...
Do you know it SF3D?

I think RAM gets too hot.
Let the fan run faster.
My RAM only gets to 47°C @ 83% @820MHz.
11-04-2006, 02:26 AM
Kamel

SOLVED!

Raising down voltage to 1.95V means no artifacts in game with GTX frequencies!

I have applied some Zalman heatsinks on memories, maybe is not enough, i will try with something bigger, and with a better thermal adhesive, something like Chomerichs T411 or T412.

Thank u all!

Kam

p.s. I measured voltage with a MM, and well i'm on liquid cooling so no faster fan...
11-04-2006, 08:06 AM
computerpro3

Quote:

http://www.xtremesystems.org/forums/...7&d=1162416829

This picture makes no sense - there are three red and blue points each. Don't you only connect two? I am getting my card today and I want to do the vgpu and vmem mods both by soldering. I understand vgpu perfectly, but which is the BEST way to do Vmem mod? I need to know which two points to connect as well as what value VR to use. Thanks.
11-04-2006, 08:29 AM
derektm

Quote:

Originally Posted by computerpro3

This picture makes no sense - there are three red and blue points each. Don't you only connect two? I am getting my card today and I want to do the vgpu and vmem mods both by soldering. I understand vgpu perfectly, but which is the BEST way to do Vmem mod? I need to know which two points to connect as well as what value VR to use. Thanks.

The points in the top right of the picture is just like a guide that tells you what the red and blue points are.

You know.... like on a map :p:
11-04-2006, 08:42 AM
computerpro3

Quote:

Originally Posted by derektm

The points in the top right of the picture is just like a guide that tells you what the red and blue points are.

You know.... like on a map :p:

ROFL I'm an idiot. I was wondering why they were so freakin big!
11-05-2006, 09:48 AM
Kamel

Is a 50K variable resistor good for memory voltage mod?

Kam
11-05-2006, 10:33 AM
SF3D

Yes it is.
11-05-2006, 10:40 AM
Kamel

Thank u so much!

Kam
11-06-2006, 02:17 AM
aka_titan

if you what a gtx bios that works the bfg oc rev4 bios 05.71.22.34.10. i just declocked it to 800mhz mem and it works no volt mods etc.. its the only gtx bios that i found that would run without any atifacts at stock volts.
11-06-2006, 02:31 AM
jVIDIA

Anyone did the pencil mod ?
11-06-2006, 03:35 AM
SF3D

I have done mod with pencil. It works great

I personally prefer variable resistors. Easier to adjust up and down.
11-06-2006, 03:46 AM
jVIDIA

SF3D, can you put a photo of your pencil mod ? Because I didn´t fully understood where to pencil :D

Did you use a pencil or conductive ink ?

What are your mem OC now and the temps of the card, are they higher ?
11-06-2006, 04:24 AM
derektm

Quote:

Originally Posted by jVIDIA

SF3D, can you put a photo of your pencil mod ? Because I didn´t fully understood where to pencil :D

Did you use a pencil or conductive ink ?

What are your mem OC now and the temps of the card, are they higher ?

If you use conductive ink, your card is fried ;)
11-06-2006, 04:54 AM
Cyba_Mephisto

Quote:

Originally Posted by derektm

If you use conductive ink, your card is fried ;)

What voltage will raise after penciling the right resistor?
Anyone tried it?
11-06-2006, 09:40 AM
SF3D

-jVIDIA-

In the picture that turquoise color is how you pencil that left resistor. Look back in thread for results. DO NOT USE conductive paint.

I can do 1940MHz now with default GTO timings (2.05V)

-Cyba Mephisto-
If you pencil that right resistor, same voltage will raise. There is no need to do that, because left resistor can do same effect.
11-06-2006, 10:18 AM
Cyba_Mephisto

Quote:

Originally Posted by SF3D

-jVIDIA-

In the picture that turquoise color is how you pencil that left resistor. Look back in thread for results. DO NOT USE conductive paint.

I can do 1940MHz now with default GTO timings (2.05V)

-Cyba Mephisto-
If you pencil that right resistor, same voltage will raise. There is no need to do that, because left resistor can do same effect.

What will happen if I pencil BOTH resistors?
11-06-2006, 11:50 AM
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...
11-06-2006, 12:06 PM
Nosfer@tu

Quote:

Originally Posted by 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...

That has nothing to do with this thread :)
11-06-2006, 12:08 PM
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?
11-06-2006, 01:25 PM
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)
11-07-2006, 02:08 AM
jVIDIA

SF3D, what was your gain between OCing your GTO with the pencil mod and without ?
11-07-2006, 05:56 AM
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
11-08-2006, 05:12 AM
Cyba_Mephisto

Quote:

Originally Posted by 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

?
Why can more VGPU help your card with ocing?
11-08-2006, 09:13 AM
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
11-08-2006, 09:31 AM
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.
11-08-2006, 09:32 AM
Cyba_Mephisto

Quote:

Originally Posted by 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.

Maybe the temperatures are too high...
11-08-2006, 10:39 AM
Nosfer@tu

Quote:

Originally Posted by 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.

Lower your Mhz on the GPU or give GPU more volt.
11-08-2006, 10:51 AM
m0rphaza

Quote:

Originally Posted by Cyba_Mephisto

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.

Quote:

Originally Posted by Nosfer@tu

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 :confused: its the first time i ever try voltmod anything so i dont want to solder.
11-10-2006, 04:23 AM
SF3D

Quote:

Originally Posted by m0rphaza

The gpuvid voltmod seems abit advanced :confused: 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.
11-10-2006, 10:46 AM
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 :D

Hope my discovery helps other people having problems :)
11-10-2006, 11:03 AM
Garrett

from .15 to .09 :confused:
11-12-2006, 07:37 AM
m0rphaza

Quote:

Originally Posted by Garrett

from .15 to .09 :confused:

I changed GTO bios to 05.71.22.39.09 from 05.71.22.39.15. That eliminated all my problems.
11-15-2006, 05:41 AM
Cyba_Mephisto

Quote:

Originally Posted by m0rphaza

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?
11-15-2006, 06:07 AM
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!

http://www.oclabs.com/kamel/7900/zone.JPG

Look @ the upper thermal pads... NEW!

http://www.oclabs.com/kamel/7900/Pads.JPG

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

http://www.oclabs.com/kamel/7900/power2.JPG

SOLUTION!

Here is the TT HS cut in two pieces!

http://www.oclabs.com/kamel/7900/Calimero/bia1.JPG

Chomerics Thermal Pad

http://www.oclabs.com/kamel/7900/Calimero/bia2.JPG

First piece in place!

http://www.oclabs.com/kamel/7900/Calimero/1plc.JPG

...THE END...

http://www.oclabs.com/kamel/7900/Calimero/2plc.JPG

http://www.oclabs.com/kamel/7900/Calimero/end.JPG

Hope it can HELP!

bye

Kam
11-15-2006, 08:55 AM
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. :banana:

...but I wanna get the memory up higher.
11-15-2006, 11:13 AM
m0rphaza

Quote:

Originally Posted by 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. :banana:

...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.
11-16-2006, 08:31 AM
Cyba_Mephisto

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

Noooooo!
:banana::banana::banana::banana:, I´ve as5ed them!!!!
How did you cut this heatsink?:confused:
11-16-2006, 10:49 AM
Kamel

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

tha'ts all..

Kam
11-16-2006, 01:11 PM
Cyba_Mephisto

Quote:

Originally Posted by Kamel

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

tha'ts all..

Kam

How long did you need?
11-16-2006, 01:26 PM
Transonic

Quote:

Originally Posted by m0rphaza

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?
11-16-2006, 02:23 PM
Kamel

About 40 minutes! for all the job
!!
11-16-2006, 03:10 PM
Nosfer@tu

Quote:

Originally Posted by Kamel

About 40 minutes! for all the job
!!

How much Did it help your overclock if anny? :)
11-16-2006, 03:26 PM
Kamel

i really don't know...

my 7900gto reaches 730/950...i don't' know if it is good enough!

no vcore mod yet...

Kam
11-16-2006, 04:27 PM
OC_Windforce

Vmem mod and read point. Best method is "red", but use turquoise if you don't want to solder. (I do not recommend "blue" method. There may be problems over 1.95V)
Attachment 52507

When work 10K VR is connected between small red point?
11-17-2006, 06:49 AM
SF3D

If I understand you right..the answer is yes.

Connect variable resistor between small red points.
11-17-2006, 07:27 AM
Cyba_Mephisto

Quote:

Originally Posted by Kamel

i really don't know...

my 7900gto reaches 730/950...i don't' know if it is good enough!

no vcore mod yet...

Kam

:eek2:

Water-cooling?

And what before modding?
11-17-2006, 10:39 AM
Garrett

Kamel, what's the height difference of those power chips? 1mm? or maybe 0.5mm? I'd like to know since I'm considering making custom cooling too :)
11-18-2006, 10:29 AM
Cyba_Mephisto

Quote:

Originally Posted by Garrett

Kamel, what's the height difference of those power chips? 1mm? or maybe 0.5mm? I'd like to know since I'm considering making custom cooling too :)

LOL?

I´ve done the mod and now I see that there is no difference in height of those chips.:( :mad:

There must be different GTOs out here...

I think there were GTOs from (damaged) GTX and some which aren´t made of GTXs to increase number of cards...

@Garrett: Measure yourself! It´s better...

EDIT2:
Would it be better modding it like this?:
http://img132.imageshack.us/my.php?i...dcooleryx8.jpg
EDIT: Can somebody tell me where the ground-points on the GTO are please?
Maybe I´ll do VGPU-Mod...
And why helps more GPU-voltage memory in overclocking?
11-19-2006, 04:29 AM
Garrett

Yeah I will... strange, ah well I have another mobo to put in the case, might as well pull the sink off and check it myself indeed :)
11-19-2006, 07:12 AM
Cyba_Mephisto

Quote:

Originally Posted by Garrett

Yeah I will... strange, ah well I have another mobo to put in the case, might as well pull the sink off and check it myself indeed :)

Sh**!!! Now I see that I haven´t any thermal glue...
I need to buy new Zalman thermal glue...
Arrrgh, ich dreh´ hier gleich am Rad...:D
11-21-2006, 03:32 AM
Zeus

I penciled that small resistor down to ~870 Ohm and voltage is now 1.92V, from 1.81V default.

Unfortunately it does bugger all for me, did not even gain one single MHz on the mem. :(

Mem is very bad, only does 718Mhz, core goes up to 730Mhz.

This seems to be my destiny, my 7900GT had a fantastic core, did 700Mhz easy with 1.4V but the mem actually clocked worse after Vmem mod.

Why me?? :mad:

Anything else that could help my memclocks?
GTX bios maybe?
11-21-2006, 05:09 AM
Cyba_Mephisto

Quote:

Originally Posted by Zeus

I penciled that small resistor down to ~870 Ohm and voltage is now 1.92V, from 1.81V default.

Unfortunately it does bugger all for me, did not even gain one single MHz on the mem. :(

Mem is very bad, only does 718Mhz, core goes up to 730Mhz.

This seems to be my destiny, my 7900GT had a fantastic core, did 700Mhz easy with 1.4V but the mem actually clocked worse after Vmem mod.

Why me?? :mad:

Anything else that could help my memclocks?
GTX bios maybe?

Why me?^^

GTX-BIOS could help.
But the RAM can get too hot, too.
Maybe Core is influencing the RAM.
Lower the coreclocks...
Try higher or lower memvoltage.
My RAM gets to 780...also bad...:(
11-21-2006, 07:06 AM
Alexandrus

One question for you guys.
I modified my GTO BIOS to say GTX instead of GTO(clocks are untouched, everything else not modified), but when I try to load the BIOS with VGABIOS, the screen gets fubared.
I can do all other modifications to the BIOS and it will work perfectly, only the device ID to GTX fubars the BIOS, any idea why ?
11-21-2006, 08:40 AM
Zeus

Quote:

Originally Posted by Cyba_Mephisto

Why me?^^

GTX-BIOS could help.
But the RAM can get too hot, too.
Maybe Core is influencing the RAM.
Lower the coreclocks...
Try higher or lower memvoltage.
My RAM gets to 780...also bad...:(

I doubt it's the ram overheating, i have a EK FC79 fullcoverblock on it.

I have a gut feeling that raising voltage even more does nothing since raising up till 1.92V did nothing at all but i will try 2V soon.

Does flashing to GTX bios relax the timings somewhat?
11-21-2006, 09:21 AM
SF3D

GTX timings are more relaxed. You will probably loose performance by flashing it.
If your memory doesn't clock very well at default voltage, usually (my own experience) it won't clock much better with mods.

Test GTX bios and 2.0V. It's the only way to know for sure.
11-22-2006, 07:36 AM
Cyba_Mephisto

Quote:

Originally Posted by SF3D

GTX timings are more relaxed. You will probably loose performance by flashing it.
If your memory doesn't clock very well at default voltage, usually (my own experience) it won't clock much better with mods.

Test GTX bios and 2.0V. It's the only way to know for sure.

Oh yeah, good idea.:) I´ll try that, too. But now I have no thermal glue so the cooler mod isn´t finished...:(

Maybe I learn soldering and then I´ll do a v-mod for gpu...:cool:
11-22-2006, 11:20 AM
Garrett

Quote:

Originally Posted by Zeus

I doubt it's the ram overheating, i have a EK FC79 fullcoverblock on it.

I have a gut feeling that raising voltage even more does nothing since raising up till 1.92V did nothing at all but i will try 2V soon.

Does flashing to GTX bios relax the timings somewhat?

The GTO indeed has tighter timings... gotta say I'm pretty happy with a. tight timings and b. artifactfree 1820 benchspeed ;)
good luck Eus :)
11-23-2006, 08:03 AM
Cyba_Mephisto

Quote:

Originally Posted by Garrett

The GTO indeed has tighter timings... gotta say I'm pretty happy with a. tight timings and b. artifactfree 1820 benchspeed ;)
good luck Eus :)

Thanks. I hope I get that card go hiiiiiiiiiiigh.:D ^^
11-23-2006, 08:20 AM
jVIDIA

Quote:

Originally Posted by SF3D

GTX timings are more relaxed. You will probably loose performance by flashing it.

Are you saying that a GTO@GTX speeds is faster then a GTO flashed to GTX ? :confused:

Quote:

Originally Posted by SF3D

If your memory doesn't clock very well at default voltage, usually (my own experience) it won't clock much better with mods.

My GTO flashed to GTX and with no mod at all does 700MHz(core)/826MHz(men). Is it a good/bad/ or average result ?

Thanks.
11-23-2006, 09:04 AM
SF3D

Yes. GTO timings are tighter, so performance is little better with same mem speed.

Your 826MHz mem clock would be average with GTO timings, but with GTX timings 826MHz is nothing spectacular.

My GTO did 850MHz with default GTO timings and stock voltage. That was good enough for me.
11-23-2006, 09:33 AM
Zeus

826 mem=average?

OMG i feel scr3wed now, mine does 715, 730 with 2.03V :mad:
11-23-2006, 09:41 AM
Cyba_Mephisto

Quote:

Originally Posted by Zeus

826 mem=average?

OMG i feel scr3wed now, mine does 715, 730 with 2.03V :mad:

There is a review in German in which they had a GTO which only got up to 710MHz mem clock...:(
11-23-2006, 10:37 AM
Zeus

Thanks, that makes me feel a little better. :D ;)
11-23-2006, 11:07 AM
HugeXL

I bought 2 GTOs some time ago, 1 does 720/740 the other 715/740 with stock cooling / no mods.
Now @ SLi @ watercooling 720/740, mem suxx hard.
But why complaining, those 5% less speed in comparison to the GTX are nothing compared with the low prize ^^

@Cyba:
Ich würd da nicht viel rummachen, akzeptiere es, du wirst es überleben, verkauf die Karte dann und hol ne 8000er GF ^^
:toast:
11-23-2006, 11:23 AM
Cyba_Mephisto

Quote:

Originally Posted by HugeXL

I bought 2 GTOs some time ago, 1 does 720/740 the other 715/740 with stock cooling / no mods.
Now @ SLi @ watercooling 720/740, mem suxx hard.
But why complaining, those 5% less speed in comparison to the GTX are nothing compared with the low prize ^^

@Cyba:
Ich würd da nicht viel rummachen, akzeptiere es, du wirst es überleben, verkauf die Karte dann und hol ne 8000er GF ^^
:toast:

LOL, ich weiß. Aber ich hab´ gerade nicht sehr viel Kohle und ich warte lieber noch auf den G81. Außerdem macht mir das Basteln an solchen Sachen unheimlich viel Spaß.^^:D
Da ist nix mit verkaufen, die kriegt mein Bruder, dann krieg´ ich auch finanzielle Unterstützung von meinen Eltern.^^

Oh, I must speak English:
LOL, I know. But I don´t have much money now and I think it´s better to wait for the G81. Furthermore this all here makes much fun.^^:D
I don´t want to sell my GTO, my brother will get it, then I get finincial help of my parents, too.^^
11-26-2006, 06:01 AM
zeeke

Quote:

Originally Posted by HugeXL

I bought 2 GTOs some time ago, 1 does 720/740 the other 715/740 with stock cooling / no mods.
Now @ SLi @ watercooling 720/740, mem suxx hard.
But why complaining, those 5% less

What bios? the .15 bios suxs for mem clocking, try out the .09 instead..

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