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Hawaii Bios Editing ( 290 / 290X / 295X2 / 390 / 390X ) - Page 180

post #1791 of 3689
regarding blackout (out of sync), i just installed asus gpu tweak just for curiosity and it prompted me to update the bios, I said sure. Blackout threshold increased from 150mv to 175mv with the new bios (with displayport freesync @ 144hz, which is great).

If you guys solve this problem, it will unlock a whole new level of performance for us (no one can play with out of sync errors, right? lol)


I might look into hardmods as well. Its just one rail. Need to find the mod spot on a reference asus and an DCII Asus.
post #1792 of 3689
Thread Starter 
You have ROM before and after update?

Compare may reveal something.
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post #1793 of 3689
i think that compare will reveal +25mV offset biggrin.gifbiggrin.gif
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post #1794 of 3689
sure

Original: https://www.dropbox.com/s/coqvsn7qw7e1hz9/asus%20r9%20290x%20DCUII%20bios%20original.rom?dl=0
updated by gpu tweak: https://www.dropbox.com/s/eolqsac7pbobqny/asus%20r9%20290x%20DCUII%20gpu%20tweak%20bios%20update.rom?dl=0

Dont think it matters much though. Everytime you flash the same bios, the blackouts appear at different millivolts. With the first bios above, one flash I couldn't get above 130v without blackout. The next flash got me to 150mv. Its silly
post #1795 of 3689
Quote:
Originally Posted by spyshagg View Post

Blackout threshold increased from 150mv to 175mv with the new bios (with displayport freesync @ 144hz, which is great).

If you guys solve this problem, it will unlock a whole new level of performance for us (no one can play with out of sync errors, right? lol)


I might look into hardmods as well. Its just one rail. Need to find the mod spot on a reference asus and an DCII Asus.

No kidding! much more so for ones like mine, I have to stick under ~+40mV, and that's with Sys Agent Volts bumped a lot to gain the last little bit.

I am so very excited and hopeful. I had mine under water and came up with the breaking down of the stock reference cooler for VRM/VRAM cooling just a few days after I got it, so being hard voltage limited was so very disappointing. I dont think my 290 has exceeded 40°C since 2013 biggrin.gif
post #1796 of 3689
Thread Starter 
Quote:
Originally Posted by spyshagg View Post

sure

Original: https://www.dropbox.com/s/coqvsn7qw7e1hz9/asus%20r9%20290x%20DCUII%20bios%20original.rom?dl=0
updated by gpu tweak: https://www.dropbox.com/s/eolqsac7pbobqny/asus%20r9%20290x%20DCUII%20gpu%20tweak%20bios%20update.rom?dl=0

Dont think it matters much though. Everytime you flash the same bios, the blackouts appear at different millivolts. With the first bios above, one flash I couldn't get above 130v without blackout. The next flash got me to 150mv. Its silly

Yep, ROM has no difference IMO that would help "blackout".

Firstly between ROMs the "unknown section" differs right at beginning. Differences are text elements for say compile date/bios PN string and then about 21 hex values which we have no idea what they mean. Then the "Directory of data / command tables" differs as VoltageObjectInfo table is larger in updated ROM so pointers to data/command tables between ROMs change.

Next PowerPlay have 1 differing value between ROMs, MPDL 216 (orig.) vs 250 (updated).

Next VRAM_Info between ROMs have 2 hex value change, Segment 3 in a previously attached marking of a VRAM_Info table, these are something to do with BBBG RAM IMO, do not know what these values mean.

Next VoltageObjectInfo differs between them, updated has 1 register and data value to program IR3567B, this is an unknown register so can't comment what effect it has. Also this register maybe active in card via MTP with the non updated ROM, only having i2cdumps between the 2 ROMs would confirm.
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post #1797 of 3689
Quote:
Originally Posted by gupsterg View Post

In OP heading Adding 390/X MC Timings (v3.1) to a 290/X & 295X2 ROM I created Samsung K4G20325FD VRAM_Info which your Lightning would use smile.gif . That table has 390/X Memory Controller timings which:-

a) give performance boost (tested by several members)
b) as stated by The Stilt are better for higher RAM freq.

Those tables have stock K4G20325FD RAM timings in straps but you can say take 1250MHz strap timings and place them in 1500 or 1625 to gain further performance. Check heading Memory Timings Modding > Other Timings mods] for info, method is in same section but heading What area of ROM to mod?.

So I tried to do this to my Lightning Ln2 BIOS, followed your Video step by step, but when I got to the UEFI tool part, I got "BIOS length does not match" error when I tried to load the vBIOS.

What did I do wrong...? redface.gif
post #1798 of 3689
Thread Starter 
@rt123

No idea smile.gif , other than bios length is not what HD7xxx Series UEFI Patch Tool BETA expects it to be. Please attach stock & modded ROM and I will view ASAP smile.gif .

@subscribers

Thoroughly impressed with the Tri-X 290 OC so far biggrin.gif , TBH was impressed with the Tri-X 290 STD I used own as well (1100/1475 ~+25mV).

I was getting "blackscreen" erratically if using 1100/1450 or 1100/1475 or 1110/1460, so it was time to remove the -6.25mV VDDC/VDDCI offset present in IR3568B MTP(denoted by FF @ 0x26 in my i2cdump).





8hrs of f@h now at stock volts (plus VDDC/VDDCI offset removed) using 1110/1460 = biggrin.gifbiggrin.gifbiggrin.gif

Prior to that run, card had been tested for 3dMark FS (all tests) looped for 30min and Heavensward looped 30min plus some desktop use of 1hr or so. Reason why I using test methodology of no load to high was to see if it "blackscreen".

Now with this mod stage 1 ROM will see if it will improve clocks from 1110/1460 still using stock volts.
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The Stilt Machine
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post #1799 of 3689
LightningBIOSplay.zip 194k .zip file

Files uploaded.

You can look at them at your convenience, not in a hurry. smile.gif

Edit:- Just to clarify, the file without an extension, is the one that's modified.


regln2.rom = stock
ln2MC = modified.
Edited by rt123 - 2/9/16 at 11:39pm
post #1800 of 3689
Thread Starter 
Why tool was giving error is it expects either 64kb or 128kb files and your files were 120kb, may I ask what you used to dump rom? I know GPU-Z makes roms 128kb when dumping if short.

I added extra bytes, double checked mod (which was correctly done) and fixed checksum, use file Ln2MC.rom in fixed folder, also in fixed folder file regln2.rom is now correct length.

LightningBIOSplay.zip 490k .zip file

Enjoy and let know me how MC mod goes so we can improve or fix any issue smile.gif .
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The Stilt Machine
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Samsung Evo 840 ThermalRight Archon IB-E X2 + 2x TY143 ThermalRight TY-143 2x front case intake Arctic Cooling F12 + 2x F9 as rear case exhaust 
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