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Modded R9 390X BIOS for R9 290/290X (Updated 02/16/2016) - Page 53

post #521 of 2053
Quote:
Originally Posted by adamdbz View Post

I have a Sapphire 290 reference with Hynix mem.

How much performance will I gain from Flashing?

In the OP there are some comparison benchmarks, but overall I think synthetic benchmarks showed 1-3% gains or so.
post #522 of 2053
So do you recommend it?
I mean are there any drawbacks? or I just get more performance for free with no ill effect?
post #523 of 2053
Quote:
Originally Posted by adamdbz View Post

So do you recommend it?
I mean are there any drawbacks? or I just get more performance for free with no ill effect?

There can be "ill effects". For instance, the driver would always crash on my reference R9 290X with the 390X bioses. Guess it had to do with the voltages being too low. Didn't try to edit them. Anyway, you got two bioses on your card in case something goes wrong. Just flip the switch and reflash.
post #524 of 2053
Quote:
Originally Posted by adamdbz View Post

So do you recommend it?
I mean are there any drawbacks? or I just get more performance for free with no ill effect?

So far it seems like overclocks with the 390 BIOS are somewhat gimped compared to stock 290/x BIOS. One of my cards that I could get 1180-1190 core clock on Air is now only stable at 1170 core under water. I'm pretty sure the card would go over 1200 underwater (previous owner even had it over 1200 at some point).

fyzzz seems to have the same issues on his card. If you read back the last 5-10 pages in this thread I think it has the most information about it, benchmarks and tests etc.

BTW, @fyzzz it seems like you tested these BIOS the most, which one is giving best actual performance for you? I tried reading through your responses here, it seems like currently you are running a custom 390 BIOS with 290 timings/voltage and overall this is the best performing?

It's a lot of work to do all these tests, it is very much appreciated by the enthusiasts here biggrin.gif

I'm a bit sad about my max OC's at least one of my cards I knew could make it over 1200 core but now it seems to be stable at only about 1170 core. So far I've only used +100mv and will see if any additional voltage helps either card. If a lower overclock produces better performance though, I'd take it biggrin.gif
Edited by Faster_is_better - 9/4/15 at 2:59pm
post #525 of 2053
Can i kill my card? or is it worst case re-flash the stock bios?
post #526 of 2053
Quote:
Originally Posted by adamdbz View Post

Can i kill my card? or is it worst case re-flash the stock bios?

It would be hard to kill these cards, they have the dual BIOS switch. If your flash failed completely you can switch to the backup BIOS and reflash again. Just pay attention to the instructions well and choose the right BIOS.

Also it depends what card you have, all/most of these new modified BIOS are intended for reference designed cards and certain VRAM types (hynix/elpida/samsung) so you have to flash according to which VRAM type you have as well.
post #527 of 2053
Quote:
Originally Posted by adamdbz View Post

So do you recommend it?
I mean are there any drawbacks? or I just get more performance for free with no ill effect?
The modified BIOS, specifically 290_HYNIX_STOCK_V1.7 & 290_ELPIDA_STOCK_V1.7, works great for me. So far I have not experiencing any problem or crash or BSOD or black screen with this BIOSes. The slightly performance boost only noticeable in benching but that's enough for me to use for gaming.

Ill effect? So far I didn't experiencing anything bad but there's always risk when using modded BIOS & what happen to your card is your responsibility. So keep this is mind. Theoretically, the modded BIOS doesn't unlock anything, like unlocking shaders or unlocking disabled cores, so it shouldn't have any ill effect to your card.
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post #528 of 2053
This might help a few people:

I've update the bios for all 4 GPUs using the guide in the OP (to the 290X_HYNIX_MOD_V1.7.rom)
I encountered some stability issues and decided to give the STOCK variant a try.
When I tried to boot using the USB I got a blank screen.
I then tried using atiwinflash and the PC froze.
Next I tried using atiwinflash from command prompt running as administrator and using the exact same command mentioned in the OP except changing atiflash.exe to atiwinflash.exe and it worked just fine smile.gif
I know about the bios switch, but it's hidden beneath the waterblock/waterblock bridge and I cannot reach it.
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post #529 of 2053
I am pretty happy with 390 bios but I still need to overclock with software tool. Which causes blackscreens when waking up from sleep.

It's all about memory on these cards, 90% of problems are due to memory voltage. Even some stock cards had too low Vcore (which is what memory voltage relies on).
post #530 of 2053
Quote:
Originally Posted by Faster_is_better View Post

You know what, I just discovered that you can actually control 0-100% with Afterburner!! You have to use the custom fan curve, you can set it however you like. I have full control, just stopped my fans and adjusted them below 25% no problem biggrin.gifbiggrin.gifbiggrin.gif

It's very strange you can't adjust them manually via the slider, that has 25% minimum, but just set them to Auto and create your own fan curve and off you go! Super excited, I can make this totally silent now I bet.

I tried that way on my cards (when had others) they had stock rom and even under custom profile not work, which rom are you using? cheers for info thumb.gif .

Quote:
Originally Posted by Krahll View Post

Did someone already got a bios for Sapphire 290 Tri-X new edition working?, or would it be better to get a 390 Nitro and mod from that?

I've tested the bioses at the OP pack (290 Tri-X new edition, Samsung ram), and the only one that lets me boot into windows is the 290_SAMSUNG_MOD_V1.7 but wont let me install drivers, either got black screen or install ends and after reboot it tells me "no amd gpu detected" or "driver not installed" so I think for this custom pcb at least they are not working.

The 390X Nitro rom does not have Samsung ram support frown.gif . I will attach copy of rom which have no modding other than one is edited to 4GB ram.

390XTriX.zip 198k .zip file

If you PM your stock rom Krahll I will edit VRAM table of 390X Tri X rom to support Samsung ram plus edit device id, then you can test if you like?
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