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Modded R9 390X BIOS for R9 290/290X (Updated 02/16/2016) - Page 78

post #771 of 1872
What BIOS do I need if I have a Saphire 8GB 290X Tri-X with Elpida ram?
post #772 of 1872
This post is in relation to your PM/above post.

All the 390/X roms I've seen are Hynix AJR IC only (H5GC4H24AJR), you have EDW4032BABG, this is also a differing IC to the Elpida timings placed in the modded roms in post 1.

I created a rom for @Krahll, had Sapphire Tri-X 290 4GB New edition with a Samsung IC (differing IC from 290/X) I modded whole factory rom's VRAM_Info table into a Sapphire 390X Nitro rom; have a read of posts around about page 60 of this thread.

I've added whole VRAM_info table from a 390/X rom to my Vapor-X 290X factory rom and then placed only timings for my IC and it didn't gain me anything. Instead RAM frequency with tightened timings that worked with my factory rom never worked with that modded rom, they artifacted.

Modding a whole table from one rom to another takes more time then usual mods, reason being is if a data shift occurs a section in the rom needs updating so it points correcting to beginning of each table within rom.

My advice again would be mod your factory rom to have tighten timings, this will gain you a stable rom which will match/beat a 390/X clock for clock IMO.
Edited by gupsterg - 11/24/15 at 2:33pm
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post #773 of 1872
Quote:
Originally Posted by s1ll1 View Post

yes, i would like to increase performance but the hex editor is bit confusing biggrin.gif

Hi. i have the same problem with my reference card 290x, one get black screen (probably timings). When you have a stable bios please send me for testing too. Thanks and sorry my language!!
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post #774 of 1872
Quote:
Originally Posted by gupsterg View Post

My advice again would be mod your factory rom to have tighten timings, this will gain you a stable rom which will match/beat a 390/X clock for clock IMO.

I like what gupsterg said smile.gif Any tutor for this?
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post #775 of 1872
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post #776 of 1872
Just flashed my 290 with the "MEM MOD" for Hynix ram. I must say I got a really nice performance boost. Cooler temps too! thumb.gif

+Rep!
post #777 of 1872
Quote:
Originally Posted by gupsterg View Post

Link:- View heading Memory Timings Modding thumb.gif

Thanks gupsterg for the link thumb.gif
+rep for you.
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post #778 of 1872
thumb.gifthumb.gif Wasn't looking for a performance boost, Black Screen O'Death returned. Flashing to 290_ELPIDA_MOD_V1.7 fixed it! Thanks a bunch!!!!
post #779 of 1872
Quote:
Originally Posted by gupsterg View Post

I created a rom for @Krahll, had Sapphire Tri-X 290 8GB New edition with a Samsung IC (differing IC from 290/X) I modded whole factory rom's VRAM_Info table into a Sapphire 390X Nitro rom; have a read of posts around about page 60 of this thread.

Mine is the 4g version, so you should not be using those unless the bioses can check you have 8g and use them (or mod the bios if needed). I have some time now, so I'm reading about mods because I want to mod V and timmings to my stock bios and see if that is better than flashing 390 bios. If I have no problems with the mod, I think I'll be uploading some firestrike scores by the weekend.

Regards.
post #780 of 1872
xD worked for me.
Edited by caenlen - 11/23/15 at 7:41pm
    
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