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Hawaii Bios Editing ( 290 / 290X / 295X2 / 390 / 390X ) - Page 306

post #3051 of 3870
looks like VRMTool will be nice source of informations about VRM table inside bios
so i will work on it for next release of hawaiibiosreader :-)

also polaris bios reader have nice interface for RAM timings so maybe i will try to copy it into hawaii reader wink.gif
Edited by OneB1t - 7/22/16 at 5:03am
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post #3052 of 3870
Thread Starter 
At the moment VRMTool has limited/fewer values than we know already wink.gif , the ones we didn't know handy to get from it smile.gif . Nice to see such an app as well smile.gif.

The image of known registers I posted in that thread I last night started making translations/method of setting that I know, I will share them soon so perhaps others can give input.
Edited by gupsterg - 7/22/16 at 5:27am
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post #3053 of 3870
interesting thing is that LLC is always enabled O.o (i tryed to disable it but it results in black screens while 3D)
so LLC and LLC slope is probably handled by driver
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post #3054 of 3870
Thread Starter 
LLC can be disabled via i2c command and ROM smile.gif , ages ago there was a post in this thread about me testing it on my Vapor-X wink.gif , this was after I cracked VMAX (aka VDDC limit in MLU ROM) / told you fSW registers (but we had no info on setting, but do now thanks to MihaStar/The Stilt) / you suggested finding "Gamer mode" wink.gif .

I have Loadline slope loop 2 register as well wink.gif .
Code:
24h = Loadline slope Loop 1, (x*0.025mΩ), min 0.0mΩ max 6.375mΩ.
25h = Loadline slope Loop 2, (x*0.050mΩ), min 0.0mΩ max 12.75mΩ.

Edited by gupsterg - 7/22/16 at 7:26am
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post #3055 of 3870
the thing is LLC slope is different from value setted in bios smile.gif so i think that driver adjusts that number based on your "ASIC quality (leakage)"
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post #3056 of 3870
Thread Starter 
I don't think so at present from something I read posted by The Stilt.

In OP heading "What is ASIC Quality" > "Effect of LeakageID on LL and current draw".
Quote:
Since the load-line resistance (RLL) is fixed instead of being dynamic based on the leakage current, the high leakage GPU will have a greater load-line effect (voltage drop).
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post #3057 of 3870
edit: yep you are right
Edited by OneB1t - 7/22/16 at 8:11am
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post #3058 of 3870
Thread Starter 
Quote:
Originally Posted by OneB1t View Post

Not anymore biggrin.gif ...

Yeah wink.gif , LOL biggrin.gif .
Edited by gupsterg - 7/22/16 at 12:17pm
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post #3059 of 3870
soo... if i increase value from 43 to 50 will it have higher or less vdrop ?biggrin.gif
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post #3060 of 3870
Thread Starter 
AFAIK lower value = less vDroop.

I think this from:-

i) Fury/X is 1Ch = 28 , 28*0.25mΩ = 0.7mΩ , I see less vDroop from set VID on Fury/X vs Hawaii which was 2Bh = 43 , 43*0.025mΩ = 1.075mΩ.

ii) Page 37 of IR3565B PDF states 0mΩ is LoadLine Off, ie what we do with register 38, now we regard LLC as ON when we have no vDroop but perhaps it is the other way around, view Unwinder's post on Guru3D, see how he states LLC disabled is what we think is LLC = On, I hope I make sense biggrin.gif .

iii)
Quote:
Originally Posted by MihaStar View Post

I think there might be some profit to decrease the slope, but don't switch it off at all.This might shorten the distance in volts between light load VCC and full load VCC, giving some efficiency improvements at light loads.

Edited by gupsterg - 7/22/16 at 10:36am
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