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 ;)