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Extract and Flash GTX 970 and 980 Firmware - Zoson's H2O and AIR Custom BIOS - Page 259

post #2581 of 6471
Quote:
Originally Posted by bSmooth View Post

I just wanted to chime in and say I'm not so sure it's ASIC related, or if it is it's across the board, as my card's ASIC is 77.3% and experience this same issues. This is why I changed my P00, and recommended to others to do the same as a "catch all" fix. Yes, I'm aware it's not the most elegant or efficient. But it works without fail and I don't have to watch tons of boost clocks and voltages, try to scale them, and flash the BIOS god knows how many times. So until we find out what the cause is, or what an appropriate ratio is for the voltage tables, I'll be sticking with it.

the way the voltage tables work, is the card selects a voltage from the range depending on it's ASIC quality. If the card thinks the min voltage is too high for a certain CLK, it simply won't select that CLK. Another way around this is to manually set every table to the same min/max as long as you know which ones it chooses by default for each step. (for example, I knew my 77% card would boost 1342 1162mV @ stock so I started from there).

Also, if you choose a voltage higher than the voltage regulator can even output, it won't choose that CLK (example: Asus cards top out at 1212mV without GPU Tweak offsets, so it will never choose a CLK above 1212mV)

Quote:
Originally Posted by OniLink View Post

I have some question regarding voltage table. I've searched the whole topic but some values are not explained or not clear.

1) What is the last line in the voltage table? It is set to 1200 mV but no one ever talked about it.

2) The second line is the P00 min and max voltage. So if I want a constant voltage while being in P00 (which should be the "max load state") do I have to set both min and max the same?
I can't measure voltage with a DMM right now, so I'm not sure if the voltage is fluctuating somewhere between 1281,3 - 1312,5 or is stable at 1312,5 (maybe I worried for no reason?).

3) The third line is boost min/max voltage. However you explained that the min value is the factor that selects the highest used bin. Does this line do just this or does it affect the effective voltage too?
If not, I guess that voltage is affected by the second line only.


It should be nice to gather all information in a single place, because searching through the whole topic for every single question about MBT is long and not accurate.
It would be awesome if someone had the time and the knowledge to write a complete guide to MBT values and their behaviour.

1. I don't think anyone knows what that 1200mV value is, it doesn't appear to do anything. perhaps it has something to do with what the card falls back to as a failsafe default like when it boots and has no drivers loaded, or when KBoost is enabled? no idea.
2. seems fine to have that second table at a low and max value, I can still boost to CLK74 and keep it there if I choose (unless I hit power cap). What's stranger is by default some of my boost clocks go lower than the min value set here, headscratch.gif
3. odd, my stock bios has that 3rd value set to the max voltage for min/max here but I think Asus cards ignore that for some reason. maybe someone else can answer this better.
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post #2582 of 6471
Quote:
Originally Posted by s74r1 View Post

the way the voltage tables work, is the card selects a voltage from the range depending on it's ASIC quality. If the card thinks the min voltage is too high for a certain CLK, it simply won't select that CLK. Another way around this is to manually set every table to the same min/max as long as you know which ones it chooses by default for each step. (for example, I knew my 77% card would boost 1342 1162mV @ stock so I started from there).

Right, I think most of us get that, but the problem is the voltage selection for low utilization games seems to select the minimum voltage causing crashes. Drop back and read the past 3-5 pages where you'll see a few of us talking about this and that's why changing the P00 was suggested.
post #2583 of 6471
Quote:
Originally Posted by s74r1 View Post

and for some reason with two cards it senses 12v input at 11.5v under load, but with only one card installed it senses 11.9v under load even though my multimeter on a molex plug says 12.22v. I see a 12.15->12.10 drop with voltmeter directly on PCIe connector with one card, have to test with two... strange, maybe my 750w is not enough? headscratch.gif it's a quite durable CWT-built design like the old Corsair PSU's (TX750, HX750, HX950) before they switched to seasonic, with 7yr warranty. harwaresecrets managed to pull nearly 900w from it without much drop. or perhaps it's my motherboards 75w on two cards drooping too much?

How are you checking this? I'm folding right now and it's showing 12.20-12.21v for me and just want to check I'm doing the same way you are. You say directory on PCIe connector, how do you mean?
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post #2584 of 6471
Did someone find my same trouble ? I have a Zotac 970 ZT-90101-10P (the one with the short PCB) and regardless all the efforts I made tweaking and flashing vatious Bios, I can't pass through the VDDC Core Voltace of 1,2120... Am I capped on the VRM ? Do I need some hardware mod to get trough ? I flashed the Zotac bios taken from the firts page, but I had artifacts, so i modded my same bios with the same power and voltage table, but nothing occurred and I'm still blocked at 1,2120 !!!
post #2585 of 6471
Quote:
Originally Posted by error-id10t View Post

How are you checking this? I'm folding right now and it's showing 12.20-12.21v for me and just want to check I'm doing the same way you are. You say directory on PCIe connector, how do you mean?

I'm stabbing my voltage meter into the yellow and black wires on the PCIe connector, and also checking it via HWINFO64 like this:

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Cygni
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post #2586 of 6471
Quote:
Originally Posted by Lukas026 View Post

Thank you very for the answers. (you can write me a PM so we dont spam this topic smile.gif )

I would recommend you post this either in the card owner thread or better yet, create a post at the water-cooling section, that way you can cover off many questions without "pollution" as it's yours smile.gif
Quote:
Originally Posted by s74r1 View Post

I'm stabbing my voltage meter into the yellow and black wires on the PCIe connector, and also checking it via HWINFO64 like this:


Ah, I don't see anything like that in the GPU section of HWInfo. Just the normal +12V which is showing 12.09V but measured is 12.20V

Going straight to GPU cable's, it's measuring 12.10V
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Just a 'puter
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post #2587 of 6471
Quote:
Originally Posted by error-id10t View Post

Ah, I don't see anything like that in the GPU section of HWInfo. Just the normal +12V which is showing 12.09V but measured is 12.20V

Going straight to GPU cable's, it's measuring 12.10V

Probably an Asus Digi+ VRM thing, extra sensors and stuff.
Cygni
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Cygni
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post #2588 of 6471
Quote:
Originally Posted by bSmooth View Post

I just wanted to chime in and say I'm not so sure it's ASIC related, or if it is it's across the board, as my card's ASIC is 77.3% and experience this same issues. This is why I changed my P00, and recommended to others to do the same as a "catch all" fix. Yes, I'm aware it's not the most elegant or efficient. But it works without fail and I don't have to watch tons of boost clocks and voltages, try to scale them, and flash the BIOS god knows how many times. So until we find out what the cause is, or what an appropriate ratio is for the voltage tables, I'll be sticking with it.

Yea, I flashed about "god knows how many times" and I am done, at the end I increased the P00 and lets go gaming again smile.gif thank you for that recommendation.
post #2589 of 6471
I was also having trouble with low utilization in not so demanding games. Now my card has it's max clock baked in and I'm rock solid 1607mhz/1.262V when gaming and 135mhz/0.850V while idling.

My card is getting up to 78ºC while gaming though, should I be concerned? I hear this cards are built to endure up to 100ºC. I live in a very hot country and I have no AC in my room, so not much to do since my case already had 4x 140mm fans throwing cool air onto the card + 2x 140mm and a a H80i in push/pull removing the air from inside.

Coul the temperature be realted to XBAX/SYS/L2C values? I overclocked those at the same proportions I did the GPC. In fact, I don't really know what they do, was just trying to keep the same proportions from the original BIOS.

BTW, nice tune, s74r1 biggrin.gif
post #2590 of 6471
Does anyone know if the Zotac 970 AMP! Extreme is still limited to 1.312-1.32 volt max like the other 970's?

The power delivery isn't reference and looks beefier, but the BIOS is still locked out of the box at 1.26, anyone have this card that can confirm whether it'll go over 1.312?
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