eVGA 8800 GTX with a modded AC3 bios

Last week i downloaded nibitor @ mvktech.net. I also grabbed the latest eVGA 8800 GTX AC3 bios. After testing my normal eVGA 8800 GTX i found that it was stable @ 640/2100. So i used the AC3 bios and changed the board type to the normal GTX and changed the timings to 640/1500/2100.

End result:

E6600 @ 3.6 ghz @ 1.4375v @ 9*400 @ DDR800 @ 1:1 @ 4-3-3-3-16 @ 2.4v

8800 GTX @ stock = 10689 3d06 marks :)
8000 GTX @ 640/2100 (Atitool) = 11320 3d06 marks :toast:
8000 GTX @ modded bios @ 640/1500/2100 = 12645 3d06 marks :banana:

It seems a modded bios does pay off as long as you test your 8800 gtx very good at overclokced settings and always have a pci vga card standby in case you need to flash back the old bios. Use NiBiTor to backup your current bios first !

Well done !!
What is the significance of changing the board type??
What types are there and what was it set to before?

Thanks

wow BIG change man

It seems wise to change the board type because the pc will see a real 8800 GTX AC3 in stead of a 8800 GTX "special". I have read some stories about people who didn't change the board type and got into trouble.

To play safe = change board type

Results are very good.

Link? :)

Link:

All the info you need is on the www.mvktech.net

1. Backup your own bios file with the latest version of NiBiTor
2. Download a AC3 bios, or use a copy of your own bios
3. Test your 8800 gtx to be sure to reach the proper speeds
4. flash the bios with nvflash

www.mvktech.net

Why does flashing the bios to the AC3 version mean increased score in 3dM over the standard OC?

Is it because the shader clock is OCed?

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Originally Posted by CedricFP

Why does flashing the bios to the AC3 version mean increased score in 3dM over the standard OC?

Is it because the shader clock is OCed?

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Yes, the shader clock is the main reason but i think that the memory timings are slightly faster/fine tuned. The bios file contains memory timings like a spd of a ddr2 dimm.

was 640 the limit before and is it now? i mean do the tightened timings limit the overclock possible?
also do you think this will work with a different brand of board?

i'm not totally sure about this, but if i overclock my video card regulary, doesent it increases the shader clocks too at the same time, or will i need to mod my bios file if i want to increase the shader clocks.

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Originally Posted by Solarfall

i'm not totally sure about this, but if i overclock my video card regulary, doesent it increases the shader clocks too at the same time, or will i need to mod my bios file if i want to increase the shader clocks.

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it does increase the shader clock but with constant rate , with a modded Bios you can push it a little bit further

kemo6600 thanks for verifying this. have to try this ASAP. and test if it will give me a better scores in various benchmarks.

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Originally Posted by Solarfall

kemo6600 thanks for verifying this. have to try this ASAP. and test if it will give me a better scores in various benchmarks.

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definitely will give you better scores but not ^^^^ that much

oh that memory in your sig , picked by The Stilt :stick:

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Originally Posted by kemo6600

definitely will give you better scores but not ^^^^ that much

oh that memory in your sig , picked by The Stilt :stick:

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have no idea... but i think that he works in that store were i bought these ram sticks.
btw actually i have not fully tested the true potential of these stick, they might clock even higher. just can't seem to find the time these days, damn work stuff and life interferes :(

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Originally Posted by Solarfall

kemo6600 thanks for verifying this. have to try this ASAP. and test if it will give me a better scores in various benchmarks.

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so it will work on your XFX card?

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Originally Posted by pumbertot

so it will work on your XFX card?

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yep it should be piece of cake. you just have to download the right bios file from MVK tech, load that in nibitor and you can alter your cards settings from nibitor.

link: http://www.mvktech.net/component/opt...tfolder/cat,4/

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Originally Posted by Solarfall

yep it should be piece of cake. you just have to download the right bios file from MVK tech, load that in nibitor and you can alter your cards settings from nibitor.

link: http://www.mvktech.net/component/opt...tfolder/cat,4/

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so yeah use it for shader clock increase but do you reckon the same timings will work on an XFX or is it better to just have a play around with them one setting at a time and test that way?

How much should we overclock the shader clock by? Same percentage as memory or core?

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Originally Posted by pumbertot

so yeah use it for shader clock increase but do you reckon the same timings will work on an XFX or is it better to just have a play around with them one setting at a time and test that way?

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i would recommend to play it safe, increase mhz with tiny steps and test that card works properly, play some game or run benchmarks like 3dmark.
if the card seems to run like it should and does not cause artifacting, just increase it little bit more until you find your cards max setting, thats pretty much what i allways do when i overclock my video card, ram or cpu.

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Originally Posted by Solarfall

have no idea... but i think that he works in that store were i bought these ram sticks.
btw actually i have not fully tested the true potential of these stick, they might clock even higher. just can't seem to find the time these days, damn work stuff and life interferes :(

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I am asking because that ram looks great on paper and I cannot find it any were , on the other hand the Stilt knows every thing about that memory

I have tried 3 XFX and all had trouble with shader clock values higher than 1470Mhz ...
Besides ... one EVGA , one Foxconn and one BFG can go without problems up to 1570Mhz .
Maybe the XFX batch i had was bad ...

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Originally Posted by kemo6600

I am asking because that ram looks great on paper and I cannot find it any were , on the other hand the Stilt knows every thing about that memory

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yeah i know what you mean, they are very hard to find. basicly i know only two places were you can get them, 1 here in Finland and the other one i believe was in Germany, if you want to get your hands on these stick it probably would be best to pm The stilt, he could be able to hook you up with the right people. don't expect that he will answer right away, he has said in finish forums that he is really busy.


Stelios do you mean the XFX 8800gtx xxx oc:ed series or the regular non oc:ed ones ?

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Originally Posted by Solarfall

i would recommend to play it safe, increase mhz with tiny steps and test that card works properly, play some game or run benchmarks like 3dmark.
if the card seems to run like it should and does not cause artifacting, just increase it little bit more until you find your cards max setting, thats pretty much what i allways do when i overclock my video card, ram or cpu.

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hehe thanks for the o/c lesson though i know what im doing.:p:
question was more asking if you knew if the timings were the same across all brands and would tightening them work? but yeah i will try as soon as i have them, they should be here tomorrow. Dynasty's own superclocking set, are all mine! muwahahhaahahahahahaahah.:D

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Originally Posted by Solarfall

Stelios do you mean the XFX 8800gtx xxx oc:ed series or the regular non oc:ed ones ?

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I have only played with the regular cards .

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Originally Posted by pumbertot

hehe thanks for the o/c lesson though i know what im doing.:p:
question was more asking if you knew if the timings were the same across all brands and would tightening them work? but yeah i will try as soon as i have them, they should be here tomorrow. Dynasty's own superclocking set, are all mine! muwahahhaahahahahahaahah.:D

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lol sorry man i thought that you were a total newbie :D
let us know how you did with your cards.

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Originally Posted by Stelios

I have only played with the regular cards .

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OK i have the regular one, i gess i just have to test my self how my XFX does. so far it has been a great clocker, fingers crossed that mine is not one of the crappy ones ;)

This seems really good,
i have the Evga 8800GTX "refrence design" card

So which is the file that i will need to flash to ??

Is this the one ??
http://www.mvktech.net/component/opt...rent,category/

or u guys can point me to the exact file :D

Thx

So, this BIOS lets you change the shader clock manually? Interesting indeed!

Is the eVGA 8800GTS AC3 BIOS doing the same thing for the GTS cards???

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Originally Posted by ANP !!!

This seems really good,
i have the Evga 8800GTX "refrence design" card

So which is the file that i will need to flash to ??

Is this the one ??
http://www.mvktech.net/component/opt...rent,category/

or u guys can point me to the exact file :D

Thx

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Yes thats the correct file, but beware, you should be sure your card can do those timings and change the board type. Download a eVGA 8800 gtx bios for comparison and change the board type accordingly

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Originally Posted by gznp

So, this BIOS lets you change the shader clock manually? Interesting indeed!

Is the eVGA 8800GTS AC3 BIOS doing the same thing for the GTS cards???

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For the 8800 GTS the flash is also possible. But change the board type with NiBiTor ! And be sure your 8800 gts card can do the AC3 card specs

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Originally Posted by nordien

Yes thats the correct file, but beware, you should be sure your card can do those timings and change the board type. Download a eVGA 8800 gtx bios for comparison and change the board type accordingly

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Wht exactly is this Board-Type :rolleyes:

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Originally Posted by ANP !!!

Wht exactly is this Board-Type :rolleyes:

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If you open a bios file with NiBiTor you will see a value "board type" wich is something like 27AB, this must be the same as your original card !

does the flashed 8800 show up as an 8800 asc3 afterwards? =p

and has anyone done this from a cd by chance =/

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Originally Posted by ANP !!!

Wht exactly is this Board-Type :rolleyes:

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i think that he means the brand by that. dfi,abit..etc

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Originally Posted by Solarfall

i think that he means the brand by that. dfi,abit..etc

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There is a value called board type. For example : 27AB in my case. If you want to flash a AC3 bios the board type will be 27HA(example). When you flash the card it will show up like a AC3 card, but it isn't, so to be sure the flash has the desried results the board type should remain the same.

Attachment 57391

Quote:

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Originally Posted by nordien

There is a value called board type. For example : 27AB in my case. If you want to flash a AC3 bios the board type will be 27HA(example). When you flash the card it will show up like a AC3 card, but it isn't, so to be sure the flash has the desried results the board type should remain the same.

Attachment 57391

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yep seems like ur right, i must have confused nibitor to a nother program or something....

hehe just noticed this is my 666 post ... cool

so you mean if i were flashing from a regular evga 8800gtx to a evga 8800gtx asc3 bios, i woul dhave to change those numbers to match the original 8800gtx numbers or the flash would not work?

The reason I ask is it would be nice to actually have my card show up as an asc3, granted not at the expense of the flash not working correctly!

please clarify =)

Quote:

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Originally Posted by klepp1214

so you mean if i were flashing from a regular evga 8800gtx to a evga 8800gtx asc3 bios, i woul dhave to change those numbers to match the original 8800gtx numbers or the flash would not work?

The reason I ask is it would be nice to actually have my card show up as an asc3, granted not at the expense of the flash not working correctly!

please clarify =)

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If you use nvflash correctly it will work but there is a chance you f*uck up your bios/card. I would have a pci gfx backup ready. And make a backup with NiBiTor of your own bios.
There are SPD like memory timings, you dont know what will happen if you flash the AC3 bios.

might be a good idea to read this guide before you do anything:
http://www.mvktech.net/content/view/2069/37/

have read the guide, just was leery on the specifics of whether or not flashing to a different cards bios makes your card show up as the different card OR thats only if you dont change the board type #'s

well for the record, i flashed and thus far it seems to be working ok. Havent been able to do much testing. I used the OP's identical settings and have his identical video card.

few things I have noticed although not sure if they are abnormal or related so far are

1) the free version of 3dmark 03 isnt showing me the clockspeed of my gpu and under type its showing a buncha weird symbols before it says nvidia 8800 etc.

2) the vista performance rating test thing is basically crashing/not finishing for me. Might just be due to my OC, looking into it as we speak.

ended up making a bootable usbkey to do the job!

I just tried the 158.19 driver. I have a new personal record:

12807 3dm06 points !

With the modded eVGA 8800 GTX AC3 bios
640/1500/2100
C2D @ 3.6 @ 9*400

Are these 158.19 faster/better as the 158.16 or 158.18?

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Originally Posted by rodemannetje

Are these 158.19 faster/better as the 158.16 or 158.18?

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I think so, i had issues with the 158.18 and 97.94

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Originally Posted by nordien

Last week i downloaded nibitor @ mvktech.net. I also grabbed the latest eVGA 8800 GTX AC3 bios. After testing my normal eVGA 8800 GTX i found that it was stable @ 640/2100. So i used the AC3 bios and changed the board type to the normal GTX and changed the timings to 640/1500/2100.

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Which BIOS did you download...the one that was uploaded on Feb 4th (which is Rev. 1), or the one that was uploaded on Jan. 16th (which is Rev. 2)

So ya saying that this one could help me to. mine card is not a super clocker it seems. 618/980 is what i can call stable and wihtout artifacts.

mabye it could go higher wit this bios if it could be flashed. hmm

stupid vista isnt letting me do anything, i can run nibitor, but it doesnt show anything, and i cant run nvflash at all:slapass: :slapass: :slapass: (yes i tried running it as administrator too so dont say thats the problem)

Great info Nordien. I will be trying this out on mine shortly.

which version of nbitor? newest ?

I saw mention of a GTS Flash, I am interested, any updates to this, or anyone have more information?

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Originally Posted by Rattle

which version of nbitor? newest ?

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ya the newest one, version 3.4

EDIT, also just tried 3.3 and it didnt work either:(

cool yeah i used 3.4 to save my bios and to edit the KO bios but I dont understand how to use nvflash lol

i dont liek flashing bios ... thats hwy i am going to get ATI cards cuz with ATI tools u can change vGPU, vmem

very cool to know this works, thanks for sharing.

I modded the origianal BIOS with new core/strem/memory values and it did indeed give better performance than with Riva tiner and ATi tool. Thanks:up: :clap:

when oc the gpu the shader goes up also , right . so if you mod your bios (whatever bios you want ,perferred one that you have already tried and know to work on your card )with nibitor and up the shader then flash your new bios . now stock your shader is set higher , so when you oc your gpu with rivatuner your shader goes higher than it could have before , because the shader will go higher than the core , but how much higher .

http://www.benchzone.com/page.php?al...erclocking_gui

http://service.futuremark.com/orb/pr...jectId=2480884

so.. I compared the EVGA Bios to a default one:

Default: 576 / 1350 / 900
EVGA: 626 / 1458 / 1000

If you look closely at these numbers you will notice, that the shaderclock of the EVGA IS NOT OVERCLOCKED!!!

If you would increase the coreclock of the "default card" to 626, this would also lead to a 1458 shaderclock.

But why are the results higher?
Something strange is happening over here..

Tighter memory timings perhaps?

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Originally Posted by DilTech

Tighter memory timings perhaps?

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I've looked at several different bioses and the memory timings all seem identical.

For the record, I flashed an OEM 8800GTX with the ACS3 bios without a problem. I then reflashed it with a modified bios where I increased the base line shader clock by 108mhz without a problem. It did gain me a slight improvement in 3Dmark06 but I'm sure it will be more useful in games.

that's right, the memtimings of the evga and xfx are identical.
I don't understand how this should lead to higher results, it makes no sense at all.