NVidia Maxwell/Kepler BIOS editing thread. GTX 2XX to 9XX now supported. - Page 373 - Overclock.net - An Overclocking Community
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NVidia Maxwell/Kepler BIOS editing thread. GTX 2XX to 9XX now supported.

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post #3721 of 3819 (permalink) Old 01-21-2019, 08:10 PM
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Quote: Originally Posted by looniam View Post
good thing you have 3 bios on the card.

unfortunately kingpincooling forums look down but tin has his guide still up:
Extreme OC modifications for EVGA GeForce GTX 980 Ti K|NGP|N

part of the guide show evga's support for unlocking the voltage:


the classy owners thread doesn't have a stand alone (software) controller as the 980KPE or other "vanilla" classys in the OP. there are versions 2.1.0 and 2.1.2 for 980KPE and 980TI "vanillas".

i highly suggest flashing back to stock and finding the right tools for the card.
Thanks for the links. Will take a look in a moment but was able to use a voltmeter to show that the load boost voltage hit 1.246 volts which is what I assume is the 1250mv I set in the firmware. Unfortunately flashing back to my stock bios didn't cure my dead led issue. Card still functions just the led is dead. Thanks.

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post #3722 of 3819 (permalink) Old 01-23-2019, 04:36 PM
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Anyone know if the XOC custom firmwares are only for LN2?? Or will work under water?

Thanks

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post #3723 of 3819 (permalink) Old 01-23-2019, 05:26 PM - Thread Starter
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Quote: Originally Posted by davidm71 View Post
Hi,

Having trouble raising the 1.212 volt limit on my Evga 980 Ti KPE cards. I used Maxwell II bios editor to make these changes:

[​IMG]https://www.dropbox.com/s/m5jza68lxwybtss/gpu_Volts.png?raw=1[/IMG]

My desired Boost voltage I want is 1.250 volts which doesn't show in Afterburner while furmark or 3dmark is running. Not only that if I set the 825.0mv circled in orange to 1250mv Windows fails to load and locks up with spinning circles. I assume the 1306.3mv underlined in purple is the high limit that can be raised in Afterburner and the fields underlined in orange are the boost voltages?

I have attached my rom for review.

Thank you.

http://www.mediafire.com/file/nwn8o8x9x9vayky/0.7z/file
Quote: Originally Posted by davidm71 View Post
Anyone know if the XOC custom firmwares are only for LN2?? Or will work under water?

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Try this:
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post #3724 of 3819 (permalink) Old 01-25-2019, 12:49 PM
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Quote: Originally Posted by flexy123 View Post
*** Tutorial: Advanced BIOS Editing with Maxwell Bios Tweaker ***

Tweaking The Voltage Properly: Getting The Voltages Right All Across the Voltage Table

I am posting this since I haven't seen the "proper" way to do this yet. It took me a long time to figure this out.

One problem with MBT and the normal way of BIOS editing by setting the max stable clock at the last position in the voltage table 74 is that down-boosting for some odd reason will not function properly, at least not in the upper clock ranges, such as 74 down to 63. It seems that Kepler & Maxwell still want or expect their max CLK in the voltage table entry where the card is boosting to at default.

If you use the ENTIRE voltage table for your tweak as is often suggested, when down-boosting it basically "skips" the upper CLKs and (in simple words)...jumps way too low to the next entry with a lower voltage which is already in the 60s CLK range. What I wanted is to make a BIOS that not only holds an OC at desired voltage, but ALSO can boost down properly so it decreases the volts when it would need to. (OF COURSE, the card won't even throttle in a game since the main goal of our BIOS is of course keeping a stable overclock WITHOUT throttling. But I wanted BOTH, an overclock bios and proper throttling and proper voltages all across the CLKS, say if I force the card by setting lower power target. Here are my findings.)

* Requirement

You should have an idea of your max stable core clock and what voltage it needs. For testing I am using Heaven Benchmark on Ultra/Extreme, Firestrike, 3DMark06, 3DMark11.

Don't assume you need the max. voltage your card (VRM) can give to get your overclock. My card is an EVGA SC ACX2.0 which is limited to 1.212V. However, for my desired OC of 1506 I can go as low as 1.187V and this with a rather poor ASIC of 70%. When the voltage is tested (see above) there is no reason to choose higher since you will only use more heat, power, the card will throttle earlier etc..etc.

For my example I am using my desired OC of 1506 and my max. voltage of 1.187V.

* Here comes what is different to other Bios modding tuts:

Test your card at stock and stock bios and establish what its default max. boost clock is. For this you can use GPUZ, the render test, or any other test WHERE YOU KNOW IT DOESN'T THROTTLE. You want to know the max MHZ your card boosts at and at what voltage.

* In my case (and for many cards), they will likely boost anywhere from CLK 62 to CLK 70. A card with ASIC 70% for example will go to CLK 63, a card with ASIC 72% will go to CLK64.

* Look at your default max boost, say it's 1367. You look this up in MBT in the Boost Table and see 1367 is CLK 63.

What we do now, we're actually shifting our Boost Table in MBT so that our CLK 63 becomes our maximum, desired boost clock/overclock, like so:



In the "Common" Tab in MBT you set 1506.5 as Boost Clock and in the "Boost States" tab you specify your 1506.5 as well (see pic). (With most cards 1506.5 is actually already the maximum in the table, but it's possible your max. stable OC is less...or more. Then of course you use your number. I use my 1505.5 here since I tested this freq.




Switch to the "Voltage Table" tab in MBT. Now it's where it's getting interesting.

Since we shifted our entire boost table 11 or more notches "up", we need to adjust our voltage table.

You can ignore all the lower CLKs, the shifted boost clocks only affect clocks 35 and downwards.

Since our max. stable clock is at CLK63 (and not at 74 since we want to have the card "proper" boosting down if it would need to) we set everything from CLK 64 and down to 74 to a "crazy high" value like 1600. This, and the limit we specified earlier in the "Boost States" tab makes sure the card will never go beyond CLK 63.




Getting the voltage table right (from our max CLK with our max overclock down "upwards" upto CLK 35 sure is a thing I could write a book about. I must have tested here for weeks. But I found the "easiest" way is actually the best way to do it:

* FIRST, make sure that all values in the voltage table that are higher than your max. desired voltage ARE changed to your max. desired voltage.
In your voltage table, there will be many sliders on the right going up to 1281.3 or higher even. Change all those to 1187.5
(This is important since when the values exceed your max. voltage the card won't use the entry)

(Setting your max voltage BELOW your max.possible voltage also has the advantage that your card won't ever throttle due to voltage limit! As I mentioned earlier, it has several benefits NOT using your absolute max. voltage and is usually not even needed!)

Now, we're already ignoring all those at the bottom which I set to 1.600V since we don't use anything beyond CLK63.

Now you adjust the sliders on the LEFT, the so called "entry voltages".

CLK 63, your last valid entry in the table I set to 1.187V - 1.187V (both values the same).

Now you go upwards on the left and while you go up, with each step you decrease the left slider by ONE NOTCH.


This is why I said "easy" since this is easier than figuring out some elaborate curve. You simply go up the table on the left, one value less with each step and you do this from 64 upwards to and including CLK35. (Everything above ignore again since we only shifted boost CLKS which go from 35-74)

(I found only one little notch better than a steeper curve since with a steeper curve you might end up supplying CLKs at the lower end not enough voltage. Just going up and one notch less each time seems to be just right. As said, this is a topic where one could write a book about )

For the sliders on the right, note that the last 18 or so up from 63 are all at the maximum 1.187V.

(You can also look at your stock bios and imagine that we just shifted the entire boost table 11 notches up and can look at the default bios. In my case, in the stock bios, the last 18 entries are LARGER than 1.187V. And now we shifted it so entry 74 has become 63, entry 73 has become 62..and so forth. This so you understand sort-of what I did).

*** Last but not least, of course we adjusted our power limits in the BIOS as well. I don't go into detail there since this has been covered many times elsewhere.

If all went right, you now have a bios that will have your max. OC stable, without throttling....but it CAN throttle down properly if you want to. Say, you can test this running a Benchmark and then run the Benchmark at 100% , 90%, 80%, 70% Power Target etc. and you will see how it will decrease volts/clocks..and most importantly...IT WILL BE STABLE also at the lower clocks. With other ways to mod BIOS, it will not decrease voltages properly at higher clocks. I tested many times with max boost clock at CLK74, but was not satisfied how it downclocked without reducing volts)
Hi,

I know this is an old card tech and just about obsolete but having fun learning how to overclock gpu such as Maxwell. Anyhow Flexy was wondering if you have a bios with this mod you can share so I can study and learn from it? Also if I understand correctly this mod sets your card to boost at the highest stable overclock at desired voltage without throttle and will downclock once no longer under load?

Thanks


Also if my default boost clock is 1304 according to GPU-Z but it boosts all the way up to 1430mhz on its own at 1212mv which one do I choose for this guide?

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Last edited by davidm71; 01-25-2019 at 03:19 PM.
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post #3725 of 3819 (permalink) Old 01-26-2019, 01:56 PM
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Was able to get 1506/4000 stable at 1.2 v as far as I can tell. Tested it with various 3D benchmarks then customized my rom to 'Bake-in' 1506 as the default TDP Boost clock entry. Unfortunately for some reason while gaming it Boosted down to 1341!

I couldn't understand why it would Boost down or throttle as I raised my TDP values in MBT but it was using clock state #61 instead of #74 which I had set to 1506. So I had to shift down the values in the Boost table and shift up the voltage table to match.

Now it will auto Boost to 1506 and throttle down normally but I kind of cheated here it feels like.

If anyone knows why please comment. Attached my mod rom for anyone to take a peak at..

Thanks.



http://www.mediafire.com/file/hpi01d2iiddc8ic/1506.zip

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post #3726 of 3819 (permalink) Old 02-14-2019, 07:04 AM
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Can you undervolt msi gtx960 gaming 2g, or unlock +0 Core Voltage for -0... for being able to undervolt the gpu? In MSI Afterburner you cannot do that, but + increments with mV.
Thanks!
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Last edited by sorance2000; 02-14-2019 at 09:38 AM.
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post #3727 of 3819 (permalink) Old 02-14-2019, 12:13 PM - Thread Starter
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Quote: Originally Posted by sorance2000 View Post
Can you undervolt msi gtx960 gaming 2g, or unlock +0 Core Voltage for -0... for being able to undervolt the gpu? In MSI Afterburner you cannot do that, but + increments with mV.
Thanks!
Not sure if it will work the way you want as I've never tried undervolting Maxwell.
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post #3728 of 3819 (permalink) Old 02-14-2019, 12:37 PM
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Quote: Originally Posted by sorance2000 View Post
Can you undervolt msi gtx960 gaming 2g, or unlock +0 Core Voltage for -0... for being able to undervolt the gpu? In MSI Afterburner you cannot do that, but + increments with mV.
Thanks!
Not sure if Afterburner will go in reverse with voltage control or not but you could open up your firmware in Maxwell Bios Tool and adjust the voltage table directly nudging down the voltage like 10-25 mv for each boost state or just set a constant voltage for each boost state over a certain frequency.

Of course this could be risky and introduce instability which is why I would recommend you just cap your voltage levels on the high end of the table only.

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post #3729 of 3819 (permalink) Old 02-17-2019, 07:09 AM
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Quadro Bios tweeks

This is a Quadro k4200 gk104 bios. its basically the same as a gtx 670 but clocked down and more ram. Is there a way to unlock overclocking or just do the voltage/tdp mods?
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post #3730 of 3819 (permalink) Old 02-17-2019, 07:27 AM
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this is a gtx 670 bios, could you mode voltage/tdp and increase the max fan curve to 100%. Thanks!
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