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Modded R9 390X BIOS for R9 290/290X (Updated 02/16/2016) - Page 77

post #761 of 1872
Quote:
Originally Posted by mus1mus View Post

push-pull?

1850s should've been better. thumb.gif

I wanted it quiet. Single push.
     
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post #762 of 1872
greetings.

I flashed 290X_ELPIDA_STOCK_V1.7 to my two XFX reference 290X cards.
GPUZ shows installed memory as hynix? is this normal with modded bios?
I know when i installed waterblocks that i have elpida.

thanks.
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post #763 of 1872
Quote:
Originally Posted by Emmett View Post

greetings.

I flashed 290X_ELPIDA_STOCK_V1.7 to my two XFX reference 290X cards.
GPUZ shows installed memory as hynix? is this normal with modded bios?
I know when i installed waterblocks that i have elpida.

thanks.
Yes, that is normal. The 390X BIOS the modded BIOS based on have only one entry for memory which is Hynix. This is why GPU-Z erroneously reported Hynix memory with Elpida card. It shouldn't matter because the modded memory timings are for Elpida memory.
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post #764 of 1872
Hey guys,

I never really oc'ed my GPU, but this thread is looking interesting to me. I flashed my cards before using ATIFlash @ DOS, so thats not a problem.

I have read nearly the whole Thread but some things are still not clear to me yet, I am using a "ASUS r9 290 direct CU ii OC" with the newest BIOS provided by ASUS.
I did a backup from my current bios, checked it with "Hawaii Bios Reader" and compared it to different BIOS'es from this thread like the "290_ELPIDA FF_390TABLE.rom".
But the moment I load the Custom Bios into hawaii bios reader it shows weird results in my opinion such like "GPU Max Clock -- 0 MHz" and others(I did screenshots - Left side CUSTOM BioS <-> Right Side ASUS Bios Stock).

My current Goal is to flash my Card to the 390 Bios with the same Speeds as they are right now 1000Mhz/1260Mhz and go on from there.

Thanks everyone, and I hope my text is not too confusing.

Incase it matters:
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Have a nice day!
post #765 of 1872
Quote:
Originally Posted by DMatthewStewart View Post

Ive been contemplating flashing one of my Lightnings since this posted. I dont think I have the guts to chance it

Tried it once, wasn't too successful but I prolly didn't stick with it long enough
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post #766 of 1872
Quote:
Originally Posted by DMatthewStewart View Post

Ive been contemplating flashing one of my Lightnings since this posted. I dont think I have the guts to chance it

Quote:
Originally Posted by diggiddi View Post

Tried it once, wasn't too successful but I prolly didn't stick with it long enough

Personally I'd recommend modding your factory roms to have tighter ram timings. Clock for clock I can beat a 390X for 3dmark FS graphics score by 3% with my modded factory rom, this is also true for Valley, not had time to test other benches.

Your PCBs differ vastly to ref 290/X and 390/X, besides Lightning only Matrix have software memory voltage control, AFAIK no other 290/X or 390/X support this feature.

Reading how Stilt optimised VRM efficiency in his ref PCB 290/X roms (I think in VoltageObjectInfo table) I'd be hesitant to use roms which may not support same design VRM as on PCB. Your cards have got way more phases than 290/X & 390/X, I think my Vapor-X 290X has 10+2+1 and been hesitant to try a 5+1+1 (ref 290/X) or 6+1+1 (most 390/X) ROM.

The only 2 things in a 390/X rom that differ IMO are RAM timings and how the Stilt stated they optimised memory controller via bios to achieve higher RAM frequency. I've modded a complete VRAM_info table from 390X rom into my 290X rom and changed RAM IC timings to what mine are and see no addition headroom in RAM OC frequency.

I also started a compare of command tables from 390X with 290X and so far all I've checked are the same and to me only data tables vary.

Basically why command tables are not varying is:-
Quote:
There are two sets of tables in ATOM: command tables (basically scripts that execute certain functionality) and data tables (structs that store board/system specific information (type and number of connectors/encoders used on the board, power states, ddc lines, panel info, etc.).

Link:- quote source, view info under heading AtomBios info
Edited by gupsterg - 11/19/15 at 4:59am
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post #767 of 1872
Quote:
Originally Posted by gupsterg View Post


Personally I'd recommend modding your factory roms to have tighter ram timings. Clock for clock I can beat a 390X for 3dmark FS graphics score by 3% with my modded factory rom, this is also true for Valley, not had time to test other benches.

Your PCBs differ vastly to ref 290/X and 390/X, besides Lightning only Matrix have software memory voltage control, AFAIK no other 290/X or 390/X support this feature.

Reading how Stilt optimised VRM efficiency in his ref PCB 290/X roms (I think in VoltageObjectInfo table) I'd be hesitant to use roms which may not support same design VRM as on PCB. Your cards have got way more phases than 290/X & 390/X, I think my Vapor-X 290X has 10+2+1 and been hesitant to try a 5+1+1 (ref 290/X) or 6+1+1 (most 390/X) ROM.

The only 2 things in a 390/X rom that differ IMO are RAM timings and how the Stilt stated they optimised memory controller via bios to achieve higher RAM frequency. I've modded a complete VRAM_info table from 390X rom into my 290X rom and changed RAM IC timings to what mine are and see no addition headroom in RAM OC frequency.

I also started a compare of command tables from 390X with 290X and so far all I've checked are the same and to me only data tables vary.

Basically why command tables are not varying is:-
Link:- quote source, view info under heading AtomBios info

Soooo...Since I have 15 power phases on my Lightning, and it has that Samsung Memory, are you saying that I should try flashing and modding my BIOS? I love tinkering but II do need to sell my Lightnings (I think). I may bring them over into a Skylake build I just started ordering parts for (or maybe I should just get Fury X's). I have this weird sort of respect and admiration for the Lightnings that I dont like to screw with them too much. And right now, since I only have two, there is one that I wont touch because Id like to sell it. Plus, ive never flashed a gpu bios before. So this is me entering n00b City (population: Me). I had a junker/standby Lightning that only did 1200/1550. That wouldve been the perfect card to try it on. On the other hand, Ive always known that the memory on these cards has a little potential that is locked up in the card; the timings most likely being the keeper of the extra performance. Im going to have to think this over. But you guys are working on me!
post #768 of 1872
I really want to take my 290 which is stable at 1200/1500 under water to a 390, it won't unlock to a 290x already tried that... but a 290 is tempting, do I have to make my own new BIOS?

edit: nm don't asnwer me, I actually just decided I am not going to risk it and be happy with my massive OC the way it is lol
    
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post #769 of 1872
if I mod the bios to 390 then my 290 is gonna have h265 decoding hardware?
post #770 of 1872
my 290x is sapphire reference launch pcb, so i just grab a sapphire reference 390x bios from techpowerup and flash it? that simple really?
    
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