8800GT bios for better overclocking! *test*

[new-b]

Thank you.

No problem.....oh, the vGPU should give slightly higher volts loaded (3d app)than at idle (desktop).

[HitMaker]

Thanks for this "tweak" guide

My ASUS 8800GT:

Before i was able to benchmark at 740/1825/1900 and now i am able to do it at 770/1890/1900... not bad

I have to do something with the vram frecuency, if i try to go over that speed playing crysis i ALWAYS get red squares all over the screen and it freezes...

[GaS]

I have successfully flashed my Club3D 8800GT, so now it runs quite stable at 771/1836/1000. Before flash the core was 720. So quite impressive.

So, has anyone tried the jasons method with more then 1.1V? Does it work?

edit:

I can confirm that Jason's type of method does not correct the voltage to 1.2V, but stays at ~1.13V. Also changing all the others VIDs to 1.2V doesn't work either. Anyway, it is good improvement for me (50MHz on core).

[Eddie3dfx]

Can anyone tell me if this works for an evga superclocked 8800gt?
Or at least what your experience/results have been...

[GaS]

It depends on every single card.. Try it, you cant break anything

[GAR]

wich bios are you guys using to flash your card.....ones with good results????

[shaolin95]

I flashed my KO with my OWN stock Bios that I just added the 1.1 option to.

[GaS]

In general our own card BIOS. Minimum risk

[counsol]

In general our own card BIOS. Minimum risk

Yes, but some bioses will give you higher overclocks. I can up you the orig bios I have and you can check LOL

To minimize the risk you can just grab another bios from the same manufacturer and check the memory timings using nibor.

[GaS]

OK thats about RAM timings.. But anyway, lower timings with lower frequency give you almost the same result as higher frequency with higher timings. So therefore actually no improvement. I thought we were talking about voltage tweak inside BIOS...

[smsmasters]

Ok guys, I only have a USB flash stick, but no floppy drive. How can I flash my Inno3D 8800GT BIOS?

Thanks

[r4st4m4n]

Ok guys, I only have a USB flash stick, but no floppy drive. How can I flash my Inno3D 8800GT BIOS?

Thanks

There are some ways with a USB stick but it's not that easy (Google it ). Someone said he succeeded to flash by creating a bootable MS DOS CD with Nero. After booting on the CD you should be able to browse your HD.

[smsmasters]

I made a USB stick bootable by following this http://www.bay-wolf.com/usbmemstick.htm

[steve30x]

Are there any modified bioses for the 8800 GTX? I have a Gainward 8800GTX and it isnt good at overclocking. The highest I got this thing to so far is 610/1470/970.

[scamps]

Hi! My Zotac (660-Version) is flashed to 730/995/1800 and runs really great. I have used another bios from here
http://extreme.pcgameshardware.de/showthread.php?t=5170
because it works better than the one of the first posting here. That one is also stable with ATI-Tool and 3dMark06, but the Crysis-Demo only shows a With my bios everything´s fine.
My card is cooled by Accelero S1 with a lovely Scythe-fan. No possibility to get it over 60 °C. Is there any possibility to reach a higher GPU-voltage than 1,13 V by biosflash? Up to 1,2 of 1,25 V I would really try it ...
If so I could send my actual bios for reworking

[smsmasters]

I've successfully flashed my Inno3D 8800GT BIOS with 1.1V using a bootable USB flash disk.

Testing to find my max overclocks now.

Before 1.05V
GPU: 700MHz
Shaders: 1700MHz
Memory: 1000MHz

After 1.1V
GPU: 742MHz
Shaders: 1782MHz
Memory: 1000MHz

I'm keeping my memory at 950MHz. Is the speculation about the cards failing with the RAM set at 1000MHz true?

[Dr.Dos]

Everyone is just referring to subjective results aka "max stable frequency". Has any of you simply measured the result with a multimeter? It takes a few seconds and is highly objective...

[r4st4m4n]

Everyone is just referring to subjective results aka "max stable frequency". Has any of you simply measured the result with a multimeter? It takes a few seconds and is highly objective...

Some people did the measurement and confirmed it increases the voltage. They also confirmed that it is not possible to go higher with a bios flash.

Max stable frequency might be subjective, but before the flash, my card would simply crash immediately (BSOD/reboot) at the frequency I'm using now. The only thing I did is to edit my card bios to use VID 04 (1.1V) instead of VID 03 (1.05V). I didn't use another bios just edit mine.

So I think we can conclude that the bios mod really increases the Vcore

I made a USB stick bootable by following this http://www.bay-wolf.com/usbmemstick.htm

Thanks for the link. I tried to find a good tutorial last time but only found obscure explanation or some of them requiring a floppy

[shaolin95]

There are some ways with a USB stick but it's not that easy (Google it ). Someone said he succeeded to flash by creating a bootable MS DOS CD with Nero. After booting on the CD you should be able to browse your HD.

I did the Nero CD and then navigate the HD, very easy and no need to install a floppy.

[jason4207]

Everyone is just referring to subjective results aka "max stable frequency". Has any of you simply measured the result with a multimeter? It takes a few seconds and is highly objective...

I've seen someone catch their MoBo on fire sticking probes in there. I'll only measure live voltage if I solder leads on, but I don't want to hard mod the board...yet.

OCing results are the ultimate desire anyway, so they speak for themselves.

[GaS]

Everyone is just referring to subjective results aka "max stable frequency". Has any of you simply measured the result with a multimeter? It takes a few seconds and is highly objective...

I did measure the vGPU, and it is 1.1337V with the biosmoda against 1.057V with the stock bios.

[scamps]

Hi! My Zotac (660-Version) is flashed to 730/995/1800 and runs really great. I have used another bios from here
http://extreme.pcgameshardware.de/showthread.php?t=5170
because it works better than the one of the first posting here. That one is also stable with ATI-Tool and 3dMark06, but the Crysis-Demo only shows a With my bios everything´s fine.
My card is cooled by Accelero S1 with a lovely Scythe-fan. No possibility to get it over 60 °C. Is there any possibility to reach a higher GPU-voltage than 1,13 V by biosflash? Up to 1,2 of 1,25 V I would really try it ...
If so I could send my actual bios for reworking

Once again: I would try a modbios that could give me more than 1,1 or 1,13 V ... but where is it?

[GaS]

I would also like to try.. Anyway, what temps do you have in Crysis with S1? And what clocks?

[scamps]

With S1 and a 100 (not 120!) mm fan of Scythe approx. @900 upm I never get more than 60°C. Clocks are 730/995/1800 - ever, because flashed!

[GaS]

And temps with stock cooler at these clocks and voltage(if you tried)?