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[Official] AMD R9 Radeon FURY / NANO / X / Pro DUO FIJI Owners Club - Page 694

post #6931 of 11440
Has anyone else here noticed that raising core voltage in software leads to lower FPS? Because after getting weird benchmark results I went and did some testing and got this:



My Fury Xs are PowerColor cards and both BIOSs on them are the same. So I'm guessing that both of my BIOSs are 250W BIOSs but that doesn't explain why raising the power limit doesn't help in the slightest with the throttling. Also GPU-z doesn't pick up on any of the throttling since it seem to last less than 100ms. The GPUs were bellow 50C core temperature so the throttling isn't temperature relate.

I did the testing in Unigine with the 16.1.1b driver. I used both Trixx and Afterburner and both got the same results.
post #6932 of 11440
Quote:
Originally Posted by buildzoid View Post

Has anyone else here noticed that raising core voltage in software leads to lower FPS? Because after getting weird benchmark results I went and did some testing and got this:



My Fury Xs are PowerColor cards and both BIOSs on them are the same. So I'm guessing that both of my BIOSs are 250W BIOSs but that doesn't explain why raising the power limit doesn't help in the slightest with the throttling. Also GPU-z doesn't pick up on any of the throttling since it seem to last less than 100ms. The GPUs were bellow 50C core temperature so the throttling isn't temperature relate.

I did the testing in Unigine with the 16.1.1b driver. I used both Trixx and Afterburner and both got the same results.


I did not find that to be the case when I tried my hard volt mods on the pre-crimson driver when I was benching. Would be interesting to see if that is re-produced if you roll back to pre-crimson drivers because thats when everyone started to have throttling issues.
post #6933 of 11440
I get voltage related performance loss even on 15.7.1 I just didn't bother testing it properly.

I already got an idea for a fix if it's due to power limits. I'm going to flash the high power Sapphire Fury Tri-X OC BIOS. If I have a power problem that BIOS should solve it. I'm also throwing on the 4096 core unlock on it so performance should be the same.

EDIT: The BIOS flash didn't help at all the card still gets lower FPS with more voltage.
Edited by buildzoid - 2/14/16 at 12:03am
post #6934 of 11440
So you think it is down-clocking based on a voltage max? That would certainly explain why we have so much trouble with basic Overclocks.

My original testing was done with Firestrike but I never monitored fps.
post #6935 of 11440
I'm working on a high power limit BIOS ATM. If it works I'll have 511W power limit. I'm also trying to hack Vcore and HBM so it might be a few hours before I get any results.
post #6936 of 11440
I will be interested to hear how it goes. thumb.gif
post #6937 of 11440
@buildzoid

In regards to your PM about cracking PowerLimit, I'm thinking.gif I posted this back in 07/11/15, perhaps no one noted it? wink.gif .

I also have an updated screenie, IIRC I never posted it, as "bios modding" wasn't gaining support in thread redface.gif .

Near the end of 2015 I did sort of drop off forum redface.gif , but did send a PM regarding how is bios modding going on your end as I thought you'd have used the screenie I posted or made some of your own developments. I did state at the time to use the hawaii thread as due to atombios being used there are a lot of similarities (in a way).

Developments on my side regarding bios modding been for say Hawaii:-

a) gained insight on how PowerPlay have pointers within it to sections. I can apply/have applied this to Fury/X this morning wink.gif .

b) I have cracked how VoltageObjectInfo program IR3567B on Hawaii, so can change VDDC limit, etc. I have yet to view Fury/X due to time. I'm guessing due to you using hard mods not useful to you.

Another insight has occurred regarding Fury/X ROMs but to early to state, members need to get involved in bios modding for this to move forward smile.gif .

Glad to read your getting into bios modding smile.gif .
Edited by gupsterg - 2/14/16 at 2:59am
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post #6938 of 11440
@gupsterg

The problem is that I have no idea how to get the Hex to line up with your screenshots. Like I know that all the power and clock stuff is in the A140 to A350 but your screenshots start at 0.

Also I stopped watching this thread for some time. So I missed your newer screenshots. Though now that I have them I should make much faster progress.

I think I'll do a 999A 999W BIOS because 511W 420A seems to have worked. I wish I had all my usual equipment because then I could measure GPU power draw to check if the TDP hacks I've been doing actually help.
post #6939 of 11440
Quote:
Originally Posted by buildzoid View Post

Has anyone else here noticed that raising core voltage in software leads to lower FPS? Because after getting weird benchmark results I went and did some testing and got this:



My Fury Xs are PowerColor cards and both BIOSs on them are the same. So I'm guessing that both of my BIOSs are 250W BIOSs but that doesn't explain why raising the power limit doesn't help in the slightest with the throttling. Also GPU-z doesn't pick up on any of the throttling since it seem to last less than 100ms. The GPUs were bellow 50C core temperature so the throttling isn't temperature relate.

I did the testing in Unigine with the 16.1.1b driver. I used both Trixx and Afterburner and both got the same results.

Nice write up. Yeah I noticed something similar and posted a while back thinking it was just me. Although I am on the Nano, under water it can be pushed quiet high as temps remain at or under 30 degrees typically when testing.

I find anything in excess of +18 mv will actually start to result in a drop off in performance. I can for example get stable 1120 Mhz at +12 Volts which result in my best score. Going further to highest stable my Nano can actually do of 1135 Mhz at +64 mv but the reported performance will be a lot worse.
     
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post #6940 of 11440
@buildzoid

No worries smile.gif , I'll explain why my screenie start at zero.

I use AtomDis to create tables list for a ROM (guide in hawaii bios thread OP) thus I know where PowerPlay table is and only view that section of ROM smile.gif .

Besides using that method you will see the hex values to pointers within sections of PowerPlay when comparing with other PowerPlays wink.gif (not all are marked on screenie below, was just a quick meddle this morning).



Below is last update I did regarding Fury PP smile.gif (still a work in progress).



Perhaps time for another thread just focusing on bios mods for Fury/X by you guys?

*** edit ***

Something regarding Fury X VoltageObjectInfo for you smile.gif .



i) you'll also note some values in the black section which change in PT1/PT3 wink.gif .
ii) another tip this table grows upwards from FF 00 01 07 0C , so if you add values make change from there.
iii) if you add values to table, change table length at beginning of table and pointer as needed wink.gif .
iv) if table size changes a section in ROM needs changing as other tables will have shifted, ref heading How to edit ROM for data/command table length changes (be aware info will need to be applied in context of Fury ROM, which is bigger and may will have more tables)

Sorry to be cryptic but due to the potential card destroying nature of this mod I never documented this fully in hawaii thread but left crumbs of info, so doing the same here.
Edited by gupsterg - 2/14/16 at 5:42am
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