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Polaris Bios Editing ( RX5xx / RX4xx ) - Page 242

post #2411 of 3323
Guys, currently I'm trying the Powercolor Red Devil RX 580 Silent bios (1355 MHz : https://www.techpowerup.com/vgabios/191274/191274, "normal" RX 580 not the "golden sample" version) on my Sapphire RX 480 Nitro+ OC 8GB. I know that this sound really weird but this Powercolor card have the same memory chips and voltage controller (http://news.mydrivers.com/1/528/528579_all.htm) of a Sapphire RX 480 Nitro, and it should be more compatible than the Sapphire RX 580 Nitro bios (since it uses a different voltage controller)... right now I'm testing and everything seems ok... I'll keep you updated with more results!

MINOR UPDATE #1
"Nitro Glow" (http://sapphirenitro.sapphiretech.com/en/480-8.html) still works! Trixx works without a hitch! (except maybe for the fan check feature, but I'm working on it...)

MINOR UPDATE #2
VRMTool seems to report "real" values and it finds the same i2c devices like if I run it with the RX 480 bios (this last thing wasn't true with the Shappire RX 580 bios, VRMTool was detecting a extra i2c device, it was broken and labelled as "unknown i2c device"). Even HWiNFO reports legit values.

MINOR UPDATE #3
"Zero dB Cooling" (http://sapphirenitro.sapphiretech.com/en/480-8.html) works! Actually I use Trixx to keep minimum fan spinning at 20%, I never intentionally used the "Zero dB Cooling" feature but I forgot to run Trixx once and observed that this feature was still working.

MINOR UPDATE #4
The Powercolor Red Devil RX 580 has the same 4 x 7.25 mV core offset (= 25 mV) that the original Shappire Nitro RX 480 has, so the real max core voltage is still the same (1175 mv). Memory controller voltage start from 950 mV, -50 mV from original bios (change setting from Wattman if really needed).

UPDATE #5 See update #7
With the original bios, 2100 Mhz (8400 Mhz effective) was my maximum "safe" memory OC (HWiNFO reported errors at higher frequencies, I personally like 0 errors even if I can OC higher), now I can reach 2120 Mhz (8480 Mhz effective) I'm still running tests to be 100% sure but it seems to work with no problems at all.

- 2150 MHz raised 1 error after ~20 Minutes of play/benchmarks
- 2125 MHz raised 1 error after ~5 Hours of play/benchmarks (it could have been a random error but I'm too crazy even let 1 error every 100000 Hours to happen)
- 2120 MHz is my current settings (1150 mV mem controller just to avoid errors, i'll lower my voltage and find the sweet spot later), I'll try to raise/lower my oc (with 5Mhz steps) as soon I'm completely sure that this current setting is 100% stable


MINOR UPDATE #6
Browser video acceleration seems to work (more testing needed)

UPDATE #7
Something went wrong with my memory testing, I've to redo them from scratch just to be sure. Btw I modded this card with PolarisBIosEditor 1.4.1 and set higher power limits (TDP and Max Power Limit = 300 W, Max Current = 200 A, values got from Buildzoid's PCB analysis) so I do not have to mess around with crimson setting for that. Currently I'm running Driver 17.4.3 + atikmdag-patcher bios patch.
Edited by Vento041 - 4/23/17 at 12:22pm
post #2412 of 3323
For I tested the MSI 580 bios and killed my card now struggling to get the PC to boot via igp with no luck
post #2413 of 3323
Quote:
Originally Posted by megax05 View Post

For I tested the MSI 580 bios and killed my card now struggling to get the PC to boot via igp with no luck

Which RX 480 did u have? Report better your experience so other knows better what to do...
post #2414 of 3323
Quote:
Originally Posted by megax05 View Post

For I tested the MSI 580 bios and killed my card now struggling to get the PC to boot via igp with no luck

I had those on my msi rx 480s and they were strange performance decrease from 480 bios no matter how much voltage I gave them went with the sapphire bios and it's so much better maybe someone can make you a atiwinflash iso or something with the stock msi 480 bios I can upload them if you need them.
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Double Dragon
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post #2415 of 3323
Hey guys, i was wondering,

580 bioses can be flashed into 480s, we're pretty much all hyped right now isn't it ? biggrin.gif

So, i wanted to take a peek into these, i heard that flashing a 580 bios will give you "better performance at 1.200v" as well as better idling performance because the timings state were reworked + higher power limit, and there is where it gets interesting for me.

I have a XFX 480 GTR BE (i believe 71% or 75% ASIC.)

I've already flashed Elmor's ASUS RX 480 unlocked bios with which i was able to kindly made stable 1490/2000 but i reached 75-80°C at 100 fan speed which i think triggered the power limit protection or something like that.

So, with the 580 bioses' pros listed above, do you think flashing the 580 bios on my card worth something ? And if yes, which bios should i flash ? i'm looking for the lowest clocked XFX 580 bios, but i only can find Sapphire 580 limited edition bioses clocked at 1411/1450 Mhz core clock.
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Renate
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The Bootleg
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post #2416 of 3323
Quote:
Originally Posted by OxygeenHD View Post

So, i wanted to take a peek into these, i heard that flashing a 580 bios will give you "better performance at 1.200v" as well as better idling performance because the timings state were reworked + higher power limit, and there is where it gets interesting for me.

Lol 580 bios don't bring more performance, neither timings are changed. A 480 clocked at 1450/2000MHz will performs the same, if not even better than a 580 at same clocks (I noticed a small performance drop in dx11 with the 580 bios compared to the 480).

580 bios only bring higher base voltages (from 1.15v to 1.2v) and higher base power consumptions (from 110W TDP to 184W). Nothing that couldn't be achieved previously with bios mod.
post #2417 of 3323
Hey smile.gif

Has anyone flashed the asus strix 470 (4GB) with another bios then the safire bios (570 4G)?
post #2418 of 3323
Quote:
Originally Posted by Ansau View Post

Lol 580 bios don't bring more performance, neither timings are changed. A 480 clocked at 1450/2000MHz will performs the same, if not even better than a 580 at same clocks (I noticed a small performance drop in dx11 with the 580 bios compared to the 480).

580 bios only bring higher base voltages (from 1.15v to 1.2v) and higher base power consumptions (from 110W TDP to 184W). Nothing that couldn't be achieved previously with bios mod.

While you are correct I run crossfire msi rx 480 gaming x 8g's and needed more volts to be able to run them to their full potential true story bro this could be achieved using delimited bios right from this very thread but have to patch drivers and that sucks so in my case the 580 drivers are a blessing. With stock msi 480 bios I could not increase my core past 1303 no matter how many mv I added they crashed every time. With a single card I could no problem up to 1360 without extra mv. So I tried the msi 580 bios at 1393 2025 had memory errors like crazy couldn't run 1393 without +50mv +50 power so switched to the sapphire bios at 1411 2000 now I can run crossfire +50mv +50 power at the stock 1411 2000 clocks with no errors and performance is far beyond what I could achieve using any stock msi 480 bios. So just depends on your situation just cause it sucked for you doesn't mean it will for everyone now I have higher clocks crossfire is more stable due to increased volts and I don't have to patch the drivers.
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Double Dragon
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post #2419 of 3323
So far the RX580 Powercolor ones seems the best for me.
I have a non reference xfx rs 480 8gb
Using ubermix 2.3 timings for ram and TDP unlimited for testing. Firestrike shows 170 watts at 1310/1.2v, so I will probably set tdp later to 180 with pt allowable of 50% for tuning. I need a TDP limit just in case because this cooler is not to good and it will throttle when hot- its better to let it clock down a little bit to a lower state like 1285/1.175 or 1265/1.15 or 1220/1.10 to keep the card from getting heat saturated which makes it throttle harder than a soft TDP limiter. Similar behavior I had with the 7950 that got a huge overclock but not too good cooler either haha

Its the red dragon version that works best for me, in the unverified section:
https://www.techpowerup.com/vgabios/191434/191434

On unigine superposition extreme 1080p I just got a better score. The other bioses were giving me similar scores to when I had 1285 max, even though I had max set to 1310/1.2v and delimited (no throttling)
My previous was 2744 and 18.3 fps average.



On 3dmark firestrike 1080p, my new score is 67/ 56.9
The previous was 65.4/ 56.7



Valley extremeHD, I don't have a previous score to compare to.




The other bioses give stutter in 3dmark firestrike too and dont improve scores despite being 1310 vs my 1285 480 bios setup.

I still have the bug when changing a volt or clock setting in crimson, it will run a bit slower until reboot or a sleep/wake cycle. (oclmembench goes from 227 gb/s to 155gb/s). Stupid amd bug.
Edited by robnitro - 4/22/17 at 9:04am
post #2420 of 3323
Quote:
Originally Posted by Ansau View Post

Lol 580 bios don't bring more performance, neither timings are changed. A 480 clocked at 1450/2000MHz will performs the same, if not even better than a 580 at same clocks (I noticed a small performance drop in dx11 with the 580 bios compared to the 480).

580 bios only bring higher base voltages (from 1.15v to 1.2v) and higher base power consumptions (from 110W TDP to 184W). Nothing that couldn't be achieved previously with bios mod.

Dunno how the TDP works but my RX 480 without volt encrease i got peaks of 200w playing.
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