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Overclocking the 7800 Go GTX

post #1 of 83
12/28/05 at 10:35pm
Thread Starter 
I have some questions for those of you that have successfully OC'd your 7800 Go's.

I am running forceware 81.94 "Mobile" WHQL straight from the nVidia website.
I am also using RivaTuner 15.8

Before I grabbed Riva, I had enabled Coolbits 2.0, whenever I tried to OC, CB 2.0 kept backing my settings back to default frequencies. CB 2.0 was not letting me OC my card, period.

Now my increases were pretty marginal - 430/1200 versus 400/1100 stock. I started backing down the clocks from there and I simply could not OC. I won't exceed these settings without a nice AS5 application.

Before I had done this, I had enabled Coolbits 1.0, so I thought there might be a conflict and I completely UNinstalled my 81.94's. I then ran Driver Cleaner Pro/Cab Cleaner/nVidia display driver cleaner - REinstalled my 81.94's.

I have benched everything, my performance is exactly where I was before, however, I still cannot OC. I have not enabled CB 2.0, I am simply running Riva Tuner now.

Anybody run into this? It looks like the drivers are simply saving me from myself and not letting me OC at all, THE BIOS IS LOCKED (See Below)

. During the Riva pre OC tests, I was able to successfully test - 427/1200, as soon as I apply and go back to see the settings, I am back to - 400/1100.

UPDATE 12/29/05: THE BIOS IS LOCKED - See below, I knew it, if you want to OC your 7800 Go, your going to have to pull the Dell XPS trick to do it... Thanks to McAmra for the confirmation!

Thanks in advance!
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post #2 of 83
12/29/05 at 1:55am
Same here.
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post #3 of 83
12/29/05 at 7:14am
Thread Starter 
Quote:
Originally Posted by Krassh
Same here.
Glad to know I am not alone...

I am wondering if you need the Sager driver's to do it. I know Sager mods their driver's, so this may resolve this issue...

Ton's of people seem to be able to do it, people are claiming the GPU is unlocked, I'm not so sure.

Everytime I try, the frequency pulls back like it's locked. Again, my increases are marginal, I hope I don't have to BIOS mod the 7800 like the XPS people do...

PCT LUKE - Anyone, you have any data on this?

Thanks in advance.
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post #4 of 83
12/29/05 at 5:58pm
PCTorque has overclock benchmarks for the 9750, but it doesn't state if it's the gpu, cpu or both.
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post #5 of 83
12/29/05 at 9:03pm
afaik the only succesfull solution to oc the 7800 gtx go is to mod the bios.

everything you need can be found here: http://www.mvktech.net/content/view/2069/37/

of course some google for e.g. "oc nvidia nibitor" is, as usual, very helpful
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post #6 of 83
12/30/05 at 3:41am
Thread Starter 
Quote:
Originally Posted by mcAmra
afaik the only succesfull solution to oc the 7800 gtx go is to mod the bios.

everything you need can be found here: http://www.mvktech.net/content/view/2069/37/

of course some google for e.g. "oc nvidia nibitor" is, as usual, very helpful
Hahaha,

I don't know why I did not ask you in the first place! Thank you my friend.

Some questions for you:

1. Do you have an output log of your GPU settings you could send me for reference? There are several fields in NiBiTor that require data input that I do not know the correct values for. Such as voltages, temps, timings, etc... I assume the app will use default values for fields you do not specifically modify?

2. Can the default BIOS settings be obtained so that if I need to reflash the BIOS back to default this can be done?

Thanks in advance!
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post #7 of 83
12/30/05 at 3:48am
Thread Starter 
I think some people are saying they are OC'ing the 7800 Go on the Sager boards that aren't. People are saying the BIOS is unlocked and this appears to be false...

Slowly getting to the bottom of it all...
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post #8 of 83
12/30/05 at 10:21am
hi Codename_47!

the first thing you should do, is to backup your original bios.

there are only two parameters that should be manipulate: 3D Core and 3D Memory.

make you a batch of different bios-settings, eg. 410 Core & 500 Memory, 420 Core & 500 Memory etc. etc. until you have various of different Core- and Memorytimings.
For alldayuse i stay fine with 470C600M.

I assume you know how to flash the bios?!

happy oc'ing and a good new year!
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post #9 of 83
12/30/05 at 7:36pm
Thread Starter 
Quote:
Originally Posted by mcAmra
hi Codename_47!

the first thing you should do, is to backup your original bios.

there are only two parameters that should be manipulate: 3D Core and 3D Memory.

make you a batch of different bios-settings, eg. 410 Core & 500 Memory, 420 Core & 500 Memory etc. etc. until you have various of different Core- and Memorytimings.
For alldayuse i stay fine with 470C600M.

I assume you know how to flash the bios?!

happy oc'ing and a good new year!
mcAmra,

You know I have been flashing mainboard BIOS' for years, however I must admit, I have never flashed a GPU BIOS. So no, I do not know the process of flashing the 7800 Go GTX BIOS. I'm assuming it's an identical process or at the very least very similar?

1. How do I flash the 7800 Go GTX BIOS? I want to know the process with authority before I even attempt to flash the BIOS of my 7800. If I flash it incorrectly, there goes my 7800 down the drain =(, lol. Is there instructions on how to do this properly at the site you referenced?

2. How do I back up the BIOS on the 7800 GTX?

3. I had a funny feeling you were only modifying 3D parameters, gotcha there, that is all I will touch. You do have AS5 applied and I do not, as a result, I would be very conservative with my timings. I believe default timings are 200c/600m, am I correct?

4. If possible, maybe you could make a short tutorial on this. Of course excluding yourself from any responsibility, you know a "Use at your own risk" sort of thing.

Thanks for all of your help, your knowledge and research will bode well for those thinking of OC'ing their 7800 Go's.

Best of luck in 2006 and Happy New Year!
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post #10 of 83
12/30/05 at 7:38pm
Thread Starter 
Quote:
Originally Posted by bigtrouble77
PCTorque has overclock benchmarks for the 9750, but it doesn't state if it's the gpu, cpu or both.
Yeah I am curious about this myself...
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post #11 of 83
12/30/05 at 7:46pm
Thread Starter 
For those of you who do not want to take a chance at flashing the BIOS on your 7800 Go GTX's, check this awesome site out for tweaking all of your games. You can tweak some basic game settings to achieve maximum performance of your default clocked GPU. You're literally getting the most from your hardware without risking and damage from performing a "Risky" move like flashing your GPU BIOS. Check it out here and best of all it's 100% free:

http://www.tweakguides.com/

Simply search for the game you want to optimize in the left hand column and bookmark the tweakguide. You may even be able to download them, didn't really check to see.

The guides are written wonderfully and are extremely detailed and up-to-date. So no matter if you plan on OC'ing or not, you all should benefit from these guides.

Good Luck!
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post #12 of 83
12/30/05 at 8:16pm
hi codename_47, my friend!

it is always a good advice to be very patient when doing such a risky thing as to flashing a gpu bios in a notebook.

i can do the task to provide you with all the information you need to do this with a minimum of risk... but everything is already said.

check the site and you will find all necessary guides you need.
http://www.mvktech.net/content/category/4/67/37/


Quote:
3. I had a funny feeling you were only modifying 3D parameters, gotcha there, that is all I will touch. You do have AS5 applied and I do not, as a result, I would be very conservative with my timings. I believe default timings are 200c/600m, am I correct?
3D default timings are 400C (no doubledaterate core ) and 550M (doubledaterate (ddr) -> 1100 MHz RAM)

here my actual timings:


i tried to overvolt the gpu settings with no success. only thing i changed here is the 2d volt-setting (undervolt to 1.0):


happy oc'ing!
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post #13 of 83
12/30/05 at 9:09pm
Thread Starter 
Thank you!

This is exactly what I needed...

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post #14 of 83
12/30/05 at 10:10pm
Well, I can overclock mine on my D900T, but it decided to crash in 3dmark03 :P

BTW, i'm getting safe overclocks on 461/1230
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post #15 of 83
12/30/05 at 10:19pm
Thread Starter 
Quote:
Originally Posted by Jamesd12
Well, I can overclock mine on my D900T, but it decided to crash in 3dmark03 :P
It appears some people can and most can't. However, I don't know why 7800's would be rolled out this way. Either people are lying (Not saying you are) or early release cards could be OC'd and later release cards could not. If this is true, this is plain sloppy. The cards that are BIOS locked are shipped this way from nVIDIA. Its got nothing to do with the laptop model your using.

I have read that some people on these boards are OC'ing their 5720-V 7800's without BIOS modding and it's a little hard to believe. If they are, it looks like you were either lucky enough to get an unlocked GPU or your were'nt...

It's all sketchy at this point...
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post #16 of 83
12/30/05 at 10:24pm
Quote:
Originally Posted by Codename_47
It appears some people can and most can't. However, I don't know why 7800's would be rolled out this way. Either people are lying (Not saying you are) or early release cards could be OC'd and later release cards could not. If this is true, this is plain sloppy. The cards that are BIOS locked are shipped this way from nVIDIA. Its got nothing to do with the laptop model your using.

I have read that some people on these boards are OC'ing their 5720-V 7800's without BIOS modding and it's a little hard to believe. If they are, it looks like you were either lucky enough to get an unlocked GPU or your were'nt...

It's all sketchy at this point...
Mmmm, my gpu bios is v5.70.02.21.03. Maybe you can overclock mine, and you guys just have different versions. What version are you guys using (The guys who can't overclock)

EDIT: BTW, the date of my BIOS is 09/21/05, so that's an early BIOS I guess.

I posted my BIOS at laptopvideo2go forums if you guys need it.

http://www.laptopvideo2go.com/forum/...showtopic=7311
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post #17 of 83
12/30/05 at 10:42pm
Thread Starter 
Quote:
Originally Posted by Jamesd12
Mmmm, my gpu bios is v5.70.02.21.03. Maybe you can overclock mine, and you guys just have different versions. What version are you guys using (The guys who can't overclock)

EDIT: BTW, the date of my BIOS is 09/21/05, so that's an early BIOS I guess.

I posted my BIOS at laptopvideo2go forums if you guys need it.

http://www.laptopvideo2go.com/forum/...showtopic=7311
Sweet...

Yeah I think that is the case, early BIOS' versions could, new one's can't. So it looks like it was just a correction in a later BIOS revision. Looks like some of us got screwed...

Thanks for the link!
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post #18 of 83
12/30/05 at 10:43pm
Interesting I just looked at your BIOS compared to mine. Yours has no values in the clock speed of the gpu and memory as well as memory timing and voltages. I wonder if that is why I cannot modify my settings with Rivatuner and coolbits as they are locked. My gpu bios is v5.70.02.21.06 and is dated 10/28/05. All my values are filled in my version of the GPU BIOS.
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post #19 of 83
12/30/05 at 10:52pm
Thread Starter 
Quote:
Originally Posted by Krassh
Interesting I just looked at your BIOS compared to mine. Yours has no values in the clock speed of the gpu and memory as well as memory timing and voltages. I wonder if that is why I cannot modify my settings with Rivatuner and coolbits as they are locked. My gpu bios is v5.70.02.21.06 and is dated 10/28/05. All my values are filled in my version of the GPU BIOS.
Yeah that is strange, it's all screwy...

You bring up a very good point though, instead of BIOS modding the 7800 Go GTX, why not simply flash a known OC'able BIOS version to the card? I realize this is also quite risky and that BIOS revisions are made for a reason, however, if a known stable BIOS with OC functionality can be used, then its only a matter of enabling Coolbits or using Riva Tuner...

The less you have to do in the BIOS the better when your playing with a $600-$700 GPU...
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post #20 of 83
12/31/05 at 12:55am
What are you using to overclock your CPU, I found no section in the BIOS for this.
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