KGB - Kepler BIOS Editor/Unlocker

[andressergio]

1. That's your checksum that says invalid in parentheses. The 80.04.00.0F is the bios version. In the KGB config file change preserve checksum to = 1

2. Max boost issue - did you take the hash (#) away from the boost option the re-save? If you leave it commented out it wont apply.

i used the = 1 option to preserve checksum and still says INVALID seems not working on my cards

[CryptiK]

Did the bios you started with and modified with KGB have a valid checksum before you modified it? I have tried it and it works preserving the checksum of the original bios. You made some with the old version of KGB and used one of those or made one with the new version before you selected preserve checksum = 1 then they will have invalid checksums. Start with the one I made you, it has a valid checksum.

CryptiK, thx a lot! You shot in the center of bull's eye. Man, it's working, hell yeah!

No problem

[andressergio]

i started from the original backup with latest version of KGB and modded cfg and no go

[ovard]

Thanks man, but still stuck at 99-100% power target. This is really frustrating since it seems that I have a great card.

Any further help would be greatly appreciated, maybe I am missing something? Do I need a special driver or whatnot?

[CrazyNutz]

i started from the original backup with latest version of KGB and modded cfg and no go

Send me your original bios so i can take a look. Thanks

[andressergio]

Send me your original bios so i can take a look. Thanks

thanks CrazyN i already posted for you here
http://www.xtremesystems.org/forums/...nlocker/page10

http://www.2shared.com/file/lSBeOULP/GK104.html

cheers !!!
Sergio

[CrazyNutz]

thanks CrazyN i already posted for you here
http://www.xtremesystems.org/forums/...nlocker/page10

http://www.2shared.com/file/lSBeOULP/GK104.html

cheers !!!
Sergio

I'm confused now, because you said it was working for you, but now its not? Is it only not working after you used preserve_original_checksum=1 ? if so then use preserve_original_checksum=0

if you were not having a problem before do not use preserve_original_checksum=1

[ginnnnny]

Thanks man, but still stuck at 99-100% power target. This is really frustrating since it seems that I have a great card.

Any further help would be greatly appreciated, maybe I am missing something? Do I need a special driver or whatnot?

Hi,

I have the exact same problem (locked to 100% power target)

It seems to just be a problem on msi power edition cards 660ti and 670.

I have read about people on the 670 fixing it with a bios flash but I don't think there is a bios available for the 660ti yet but Crazy said he might include an option for tdp adjustment in a future edition of kgb which might fix the issue.

[CrazyNutz]

Hi,

I have the exact same problem (locked to 100% power target)

It seems to just be a problem on msi power edition cards 660ti and 670.

I have read about people on the 670 fixing it with a bios flash but I don't think there is a bios available for the 660ti yet but Crazy said he might include an option for tdp adjustment in a future edition of kgb which might fix the issue.

Yes this is a known issue with PE cards. I plans to work this out.

[andressergio]

I'm confused now, because you said it was working for you, but now its not? Is it only not working after you used preserve_original_checksum=1 ? if so then use preserve_original_checksum=0

if you were not having a problem before do not use preserve_original_checksum=1

no no theres a missunderstanding

remember i had the turbo issue you modified to 1320 instead of 1320,5 that was on older version ? that works perfect now, but checksum never worked for me that is missing to be perfect nothing more

second i sent my bios for you to investigate (if you want) if mem volts can be added or touched on anyway as my card allows it as the MSI lighthing does but Cryptik found the memory lines but not to add volts


if you read from the begining its all here
http://www.xtremesystems.org/forums/...nlocker/page10

Thanks
Sergio

[ginnnnny]

Yes this is a known issue with PE cards. I plans to work this out.

I have been wondering whether or not it's just the card giving off the wrong reading.

I think that maybe when it says 100% it is actually using 120% but I don't have anyway to test.

When my drivers crash from overclocking my card drops down to around 80% power target until I reboot msi afterburner.

example my msi 660ti can score these points on 3dmark11:
9000 points at 80% power target
10000 points at 100% power target
http://www.3dmark.com/3dm11/5433791

Would those scores even be possible if it was really only at 100% power target?

[CryptiK]

There's 2 ways to give you more overclocking headroom concerning board power. There's the 100% board power target and the max board power target. Now if 132% is not enough, and these cards suck power like mad when you crank the voltage and clocks, what's being done here is increasing the max board power target so you can move the slider to 150% for example.

This is for reference boards:

Reference board 100% board power = 170w
Reference board max board power = 225w

(225/170)*100 = 132%


If the board power is adjusted to 255w:

(255/170)*100 = 150%

So then you can slide the slider to 150% allowing the card to pull 250w.

This still means you need to adjust with software the power slider to push the % higher. I wanted to do away with software other than for monitoring so what I did using a hex editor was change the power rating that 100% board power correlated to. Mine's now set at 270w instead of the default 225 (it's a lightning card so has higher ratings) which means I can leave the slider at 100% and TDP is re-targetted to 270w. It's my preference to do it this way but it's just a difference approach for the same end result.

I'm not sure how CrazyNuts is going to approach it, he knows much more about this stuff than me, but this may possibly be a way around the issue if the max board power can't be easily adjusted.

[dual110]

Hi Guys.

Got a Gainward GTX PHantom 4GB and successfully unlocked bios with this Mod and all is fine although card isn't the best overclocker though managed an extra 40Mhz on GPU which took it to 1241Mhz boost stable, however when card hits 73 degrees it throttles straight back down to 1150 which is a huge drop compared to before it was unlocked which only dropped in smaller increments so essentially without the unlock I could get a better GPU clock.

Is there anyway of reducing the throttling by smaller increments to try and maintian a better over all clock speed?

I know this has been mentioned before just wondering if there's a remedy for it.

Thanks

[CryptiK]

73 is just over the first throttle point, there's probably something going on but have you made a custom fan profile to keep it under 70 if possible?

[dual109]

Yes, followed a few guides in setting correct fan curve. Ambient temperatures are quite warm where I live and when your playing something like BF3 temperatures hover around 75c which isn't to bad, don't seem to have such a steep throttling with stock bios.

Heard a couple others experiencing this problem after KGB modd.

Thanks for reply

73 is just over the first throttle point, there's probably something going on but have you made a custom fan profile to keep it under 70 if possible?

[ginnnnny]

There's 2 ways to give you more overclocking headroom concerning board power. There's the 100% board power target and the max board power target. Now if 132% is not enough, and these cards suck power like mad when you crank the voltage and clocks, what's being done here is increasing the max board power target so you can move the slider to 150% for example.

Hi Cryptik

We can move the slider to 150% but it has no affect its just the same as having it at 100%.

Fingers crossed Crazy will fix it for us

[STEvil]

stock bios may have had lower voltage, dual109

does your case have good airflow?

[dual109]

It's a Antec 900 v2, don't think it's the best honestly but don't think I can keep this baby under 70 irregardless, unless I go with water.

75 degrees is sweetspot for this cooler under heavy load. (BF3, Crysis2, etc)

stock bios may have had lower voltage, dual109

does your case have good airflow?

Yeah I think the voltage might be the culprit.

Other then trying to keep it cool can the bios be modded to throttle to lower voltage therefore not impacting on clocks as much like stock bios.

[ginnnnny]

Hi Guys.

Got a Gainward GTX PHantom 4GB and successfully unlocked bios with this Mod and all is fine although card isn't the best overclocker though managed an extra 40Mhz on GPU which took it to 1241Mhz boost stable, however when card hits 73 degrees it throttles straight back down to 1150 which is a huge drop compared to before it was unlocked which only dropped in smaller increments so essentially without the unlock I could get a better GPU clock.

Is there anyway of reducing the throttling by smaller increments to try and maintian a better over all clock speed?

I know this has been mentioned before just wondering if there's a remedy for it.

Thanks

If you use the 1.2v bios the card will still boost to 1.212v but only drop back to 1.2v when throttled.

[dual109]

I believe you have turned the voltage up to high and if you change to bios with slightly lower voltage would fix it for you.

If you use the 1.212v bios the card will boost to 1.212v and drop right back to 1.1v when throttled.

If you use the 1.2v bios the card will still boost to 1.212v but only drop back to 1.2v when throttled.

Thanks Ginnnnny,

Does the latest version of the KGB modd allow me to change my max boost? Yeah last time I just used the default but I believe you can set values in the CFG file, does this include the max boost?

Thanks

[ginnnnny]

Thanks Ginnnnny,

Does the latest version of the KGB modd allow me to change my max boost? Yeah last time I just used the default but I believe you can set values in the CFG file, does this include the max boost?

Thanks

Yes I put max boost -13 because I was over boosting
I put voltage to 1.200000

on 1.187500 bios I was getting throttled to 1050
on 1.200000 bios I'm now getting throttled to 1200

These bios below will all boost to 1.212v and get you the same max clock.
1.187500 throttles to 1.187500
1.200000 throttles to 1.200000

[dual109]

Ok, any possibility of providing me with an example of what the CFG file should look like to get1.200000 max boost before I apply modd to default bios.

thanks

Yes I put max boost -13 because I was over boosting
I put voltage to 1.200000

on 1.212000 bios I was getting throttled to 1050
on 1.200000 bios I'm now getting throttled to 1200

These bios below will all boost to 1.212v and get you the same max clock.
1.187500 throttles to 1.187500
1.200000 throttles to 1.200000
1.212000 throttles to 1.1v

So by choosing a lower voltage bios you actually get more

[ginnnnny]

Hey dual I had to edit my post because I made a mistake.

I thought I was on 1.212v bios and changed to 1.2v bios but I was originally on 1.1875 bios and then changed to 1.2v.

But either way changing to 1.2v has stopped me throttling so bad so I would try that

1.1875 bios got me 10000 3dmark11
1.2v bios got me 10100 3dmark11
http://www.3dmark.com/3dm11/5582713

As for cfg file I would ask one of others I'm a noob

[dual109]

Ginnnnny,

Fantastic worked a gem, set my power in the CFG file to 1.200000 and it no longer throttles at all which is what I was after and now can reduce the severity of my fan profile so its a bit quiter, being playing crysis 2 for last two hours rock stable at 1241. Prior to changing the power once it hit 73c it would throttle to 1150, I tested to see if it would throttle when it hit 80 degrees and it didn't so didn't go any further for obvious reasons.

Pretty hot down where I live so difficult to keep GPU under 70 degrees however I do need to look at my cooling as I've sold my 7970 which pumped the hot air straight out back of case as opposed to the Gainward GTX680 Phantom which leaves air in case.

Once again thanks for help.

Cheers

Hey dual I had to edit my post because I made a mistake.

I thought I was on 1.212v bios and changed to 1.2v bios but I was originally on 1.1875 bios and then changed to 1.2v.

But either way changing to 1.2v has stopped me throttling so bad so I would try that

1.1875 bios got me 10000 3dmark11
1.2v bios got me 10100 3dmark11
http://www.3dmark.com/3dm11/5582713

As for cfg file I would ask one of others I'm a noob

[theveteran]

Hi all.

Using version .05 on the GTX 690 i was getting between 1202 and 1215 on each gpu.

What you think i should set it to CrazyNuts?

Is it possible the 690 could go over 1250 mhz or even 1300mhz?

I remember seeing some reviewers cherry picked cards going over 1250 at the time of release.