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Extract and Flash GTX 970 and 980 Firmware - Zoson's H2O and AIR Custom BIOS - Page 255

post #2541 of 6487
Quote:
Originally Posted by zoson View Post

To maintain proper voltage scaling you have to boost to 74.
To maintain proper voltage scaling there are a set of ratios that you have to obey, or the minimum voltage will always be used.
If you set CLK59 as your top boost bin, you need to set your highest voltage value there, which means you have to enter crap for every bin higher. You're also limiting the number of CLK states available to the card, so you won't get full power savings.
With CLK74 as your highest boost bin, you can apply the higher voltages to the top two bins, and then maintain exactly the correct voltage and clock scaling for all other bins.

I ignored the guy who set 1262 because there's no way what he said was true. He's almost certainly having the exact same problem you are, or he runs shadowplay, OR he has something else that keeps his card pegged at the highest bin. Setting 1275 as top voltage would cause the same problem.

The cards go up to 1312, NOT 1275, just that the AB sensor only reports up to 1275. Any values above 1275, it still just shows 1275. You don't have to take my word for it, this has been confirmed by many people(with some people reporting 1320.

Voltage requirement is basically exponential. So you need significantly more voltage to get the higher bins. You can see this in the stock nvidia bios where CLK67 through 74 is where the voltage changes from 1100 to 1281. Almost a full 200mV change over 7 bins. Whereas you have a 200mV change from 35 through 66... which is 31 bins.

And really, why anyone would set LESS voltage than the stock values is really beyond me. It's artificially limiting their card for no reason.

So why does your GSv1 and AIR bios cause usage of minimal values? I uploaded my second bios few posts back and it holds exact same values as GSv1 and it still uses minimal values as I said before. Can you look at it and tell me why it still uses minimal values please?

Also is there any information on what voltage ratios should be obeyed when increasing max boost table clock?
Edited by Icydead - 1/13/15 at 6:01pm
post #2542 of 6487
Quote:
Originally Posted by Icydead View Post

Hi,

I have a 980 g1 gaming and I copied all values from GSv1 Bios into my own and flashed it. So far it works great, but I have run into a problem I am so far unable to resolve. Card is stable when I play demanding game which uses the card at maximum. But when I play a game that is not demanding at all and for example only has 20% gpu usage, the card crashes. I observed boost clock and voltage through afterburner in these situations and I saw that the card uses minimal voltage of each CLK at each boost clock. Last time I played I saw the card at 1316MHz (boost clock 52) with voltage of 1.068V (the minimum of CLK 52), whereas stock bios uses 1.218V at 1354MHz. Therefor it crashed right away because 1.068V is way too low and 1316MHz would require ~1.193V. I observed more and at every clock it uses the minimum voltage of each CLK value. Why it is doing that? The range of each CLK in stock bios is wide as well and it does not use the minimal value at all. What should I do? I thought about rising minimum values of each CLK to a value that stock bios uses at each clock, but would that be right?

Thanks for your help
encountered the same problem, all i did was copy the voltages that matches the lower clocks and it solved my issue.
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post #2543 of 6487
@zoson or anybody

can somebody take a look at this bios? I tried to mimic Zoson's NL bios few weeks ago and probably I am also doing the wrong thing as to why I cannot reach bin 74.

any constructive criticism would be fine. I'm a beginner at tweaking the bios and I am eager to learn. gtx980_jsr1.zip 137k .zip file
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post #2544 of 6487
There were some wrong values in your voltage table. I changed them because I figured it was faster for me to do than to type it here haha

It should now boost to clk74. Open both BIOS and compare them so you can see what changed.

new_gtx980_jsr1.zip 137k .zip file
post #2545 of 6487
Quote:
Originally Posted by juniordnz View Post

There were some wrong values in your voltage table. I changed them because I figured it was faster for me to do than to type it here haha

It should now boost to clk74. Open both BIOS and compare them so you can see what changed.

new_gtx980_jsr1.zip 137k .zip file
+rep for you. thanks. Will try to compare it now.
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post #2546 of 6487
@juniordnz

saw the differences and I'm blown away as to how you were able to set 1.312v as I did everything I can to try to adjust it but the slider goes from 1.306v to 1.318v right away and it is skipping the 1.312v mark. This is also the scenario to the other voltages on the table like going to 1.293v which I cannot set also and tried to like almost not moving my hand just to adjust it. geez.

Anyway, tried the bios that you edited. tried to run a benchmark tool and saw a lot of artifacts and crashed. seems that my chip can't handle those clocks which led me to the conclusion that my chip MAYBE would just go to 1506mhz stable.
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post #2547 of 6487
Make sure you're using mbt 1.36. It's odd that you can't change the slider to 1312mv.

If you're getting artifacts I sugest you lower your core clock until you find one that's stable. You can also set the clocks on the BIOS the same as stock and work your way up from there using afterburner. That way you won't need to do countless flashes until you find your sweet spot. Just lower all your clocks (commom tab, boost table, boost states and clock states) as it is on the stock bios and keep only the power/voltage modifications. That way you can work your memory and core clock on afterburner. Once you find out your max stable overclock you edit the bios again with that value. It will save you a few time.

There are 4 bins left until you back down to 1506. Don't throw the towel yet! thumb.gif
post #2548 of 6487
Quote:
Originally Posted by juniordnz View Post

Make sure you're using mbt 1.36. It's odd that you can't change the slider to 1312mv.

If you're getting artifacts I sugest you lower your core clock until you find one that's stable. You can also set the clocks on the BIOS the same as stock and work your way up from there using afterburner. That way you won't need to do countless flashes until you find your sweet spot. Just lower all your clocks (commom tab, boost table, boost states and clock states) as it is on the stock bios and keep only the power/voltage modifications. That way you can work your memory and core clock on afterburner. Once you find out your max stable overclock you edit the bios again with that value. It will save you a few time.

There are 4 bins left until you back down to 1506. Don't throw the towel yet! thumb.gif
yeah I'm using version 1.36 and its so odd that you were able to get 1.312v and I did not frown.gif. I tried to back down from 1569, 1557, 1544, 1531. all four clocks missed the spot frown.gif. I tried 1519mhz and I was able to finish the benchmark and I am not convinced if it can hold for hours of gaming.
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post #2549 of 6487
More than 1500 is still pretty good for a GPU though. If that's really your max, move to overclocking the memory. That can also give good results.
post #2550 of 6487
I see. Well I'm back at 1506mhz hehe and I'm pretty sure that I'm stuck with this. The question is since I can only reach 1506mhz, does it use the 1.312v? or the voltage that is set on the specific bin?

if it follows the voltage on that specific bin only (1506mhz in this case), can I lower the boost clocks and make 1506 as bin 74 then adjust the voltages altogether to match the voltage that is used to run 1506mhz and in return, the voltages for maximum clocks is not 1.312v?
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