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New Bios update for gigabyte HD7950 ! - Page 86

post #851 of 1324
with modded fy1:
min. fps: 41,4
max: 60,37
average: 53,45

modded fx1:
min.: 44
max: 62,13
average: 56,1
post #852 of 1324
Quote:
Originally Posted by TurkishGerman View Post

with modded fy1:
min. fps: 41,4
max: 60,37
average: 53,45

modded fx1:
min.: 44
max: 62,13
average: 56,1

temps also -_- , the main purpose of the mod.
Quote:
Originally Posted by EnErgy667 View Post

@Robnitro
Do you know at which offset in bios can the power limit be changed from 20 to 50 and is it possible to edit the ASIC table for the stock core/voltage, not the boost one, so i can reduce throttling or downclocking under full load!?

EDIT
Nevermind, found it and changed it accordingly. Here is the new bios with Power limit changed to 50% which nullifies throttling or downclocking.

FX1-PL50.zip 105k .zip file

Can you describe in DETAILS between the 50 pl mod vs your normal mod, and in the 50 pl mod u implemented 50 permanatly in the bios or we can change the slider and choose less than 50 also ?
Edited by xtreemeNoob - 6/10/13 at 11:51am
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post #853 of 1324
to xtreemeNoob
are my results bad?
if yes,how to get better?
please dont say,buy a new card smile.gif
post #854 of 1324
Could be the different powertune values for the fx and fy? I don't know.

I modded a higher default voltage fy fx ft bios. Instead of 1.056v boost default, it is 1.113v. Instead of 1v state 2, it is 1.031v.

Also PT is changed to 50 max to bypass throttling. I also did it for the 1.056v bioses.

Not sure if it still will be unlocked, because I am using a different step in the asic to voltage table.

Let me know how it goes.

robnitrogbunlockfx-fy-ft.zip 900k .zip file
Edited by robnitro - 6/10/13 at 12:25pm
post #855 of 1324
Quote:
Originally Posted by xtreemeNoob 
Can you describe in DETAILS between the 50 pl mod vs your normal mod, and in the 50 pl mod u implemented 50 permanatly in the bios or we can change the slider and choose less than 50 also ?

Well i'll try.
Basically the card has bios locked Power limit set to 20% and on many cards it doesn't help reduce throttling even when you set the slider in AB to 20% and IMHO i think the main reason for this is different ASIC quality on many cards which coincidently is in co-relation with Vdroop. Different ASIC-different Vdroop-different throttling-different OC capabilities.
What i did was fooling the bios in thinking that the maximum power limit that it can draw from the card exceeds 20% but never above 50% and in this case the power slider in AB is meaningless because when under full load the card will use all the available resources until it reaches the maximum but never exceeds +50% and thus nullifies throttling, so the card chooses for itself the power limit depending on the GPU load. When the card uses less than 99% GPU usage then the Power limit varies depending on the card but roughly it holds still in between +5% to +15%. I have confirmed that TDP doesn't change, it remains the same for your card which is set by the manufacturer.
I hope i somehow clarified this.

EDIT

I forgot to mention that it can stabilize OC-ing, but the amount varies from card to card.
Edited by EnErgy667 - 6/10/13 at 12:23pm
post #856 of 1324
It doesn't really stabilize OCing. I've never seen that. It does help with fps in some benchmarks though.

With occt stress test, If I run a lower powertune, I can run 1 or 2 clicks less voltage in MSI AB.

Higher load on that app gives more vdroop. For example, 1.181 v, full PT I get droop down to 1.08v.
If I turn PT lower, more throttling, droop to 1.11v.

The more current the VRM's have to give, the more voltage drop. The more voltage drop, the more you need to put in to be stable.
post #857 of 1324
Quote:
Originally Posted by robnitro View Post

It doesn't really stabilize OCing. I've never seen that. It does help with fps in some benchmarks though.

With occt stress test, If I run a lower powertune, I can run 1 or 2 clicks less voltage in MSI AB.

Higher load on that app gives more vdroop. For example, 1.181 v, full PT I get droop down to 1.08v.
If I turn PT lower, more throttling, droop to 1.11v.

The more current the VRM's have to give, the more voltage drop. The more voltage drop, the more you need to put in to be stable.

Well i partially agree with you because it varies from card to card, namely the ASIC of a card. On my card before the PT mod, my max stable OC was 1120@1.169v, now is 1140@1,169v and the vdroop is non existent. I haven't had the opportunity to test it on other cards but i will do it tomorrow and see the result.
I think, greater the ASIC of a card, more Vdroop will occur.
Have you perhaps found the memory voltage string?
Edited by EnErgy667 - 6/10/13 at 12:44pm
post #858 of 1324
No, I just use msi ab to undervolt my memory...

Vdroop non existent? What about occt 4.4.0 480x480 dx11, error check on, shaders 5. That's a true load test. If it doesnt drop there, I have doubts about your voltage reading, the v2 cards seem to lack real vrm monitoring capabilities.

My card can only do max occt pt 50 using 1050 mhz, 1.138 v. VRM current IN (which is what 12v current the card is using), is up to 21 amps.

Any more current and I get overcurrent shutdown. My older card, with worse asic could do up to 25 amps without overcurrent shutdown.
post #859 of 1324
Quote:
Originally Posted by robnitro View Post

Could be the different powertune values for the fx and fy? I don't know.

I modded a higher default voltage fy fx ft bios. Instead of 1.056v boost default, it is 1.113v. Instead of 1v state 2, it is 1.031v.

Also PT is changed to 50 max to bypass throttling. I also did it for the 1.056v bioses.

Not sure if it still will be unlocked, because I am using a different step in the asic to voltage table.

Let me know how it goes.

robnitrogbunlockfx-fy-ft.zip 900k .zip file

U MEAN TO SAY AT 900mHZ ITS' 1.031 ?
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WD 1TB Blue plextor m6 pro  Coolermaster Hyper 212 EVO Windows 8.1 pro 64bit 
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post #860 of 1324
Quote:
Originally Posted by robnitro View Post

No, I just use msi ab to undervolt my memory...

Vdroop non existent? What about occt 4.4.0 480x480 dx11, error check on, shaders 5. That's a true load test. If it doesnt drop there, I have doubts about your voltage reading, the v2 cards seem to lack real vrm monitoring capabilities.

My card can only do max occt pt 50 using 1050 mhz, 1.138 v. VRM current IN (which is what 12v current the card is using), is up to 21 amps.

Any more current and I get overcurrent shutdown. My older card, with worse asic could do up to 25 amps without overcurrent shutdown.

I would like to avoid going into an argument on the theme because that was not my intention, i was merely stating that it is card dependent so i will test my card again, record it, and afterwards test two more cards, record them both and post my finds here on the forum. But before that, please read this-->> http://www.overclock.net/t/1367354/problems-of-a-low-asic-quality-card-sapphire-7970-60-4/90#post_19753562
There are many more threads on the subject out there.
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