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Polaris Bios Editing ( RX5xx / RX4xx ) - Page 251

post #2501 of 3375
Quote:
Originally Posted by Pavoz View Post

So.... used the second one from techpowerup https://www.techpowerup.com/vgabios/191262/sapphire-rx580-8192-170320 since it only has 1411 clock speeds, seems to be ALOT more stable than the 1450 one for my Sapphire RX 480 Nitro+ OC 8Gb, I attached the GPU-Z logs while playing Player unknown Battlegrounds for around 10 minutes GPU-ZSensorLog.txt 76k .txt file

Did you manually adjusted the vCore at 1411MHz?? I succesfully flashed the RX580 Nitro+ on my RX480 Nitro+, but the vCore is running too low(1125~1118 mV) at 1411MHz and, because of low vCore, on some games the GPU are crashing.
Edited by Brave Hunter - 4/23/17 at 6:50pm
post #2502 of 3375
Is there a tool that will make the bios I made for my Powercolor RX 480 8GB Red Devil UEFI? I switched one of my rigs over to windows 10 and now it will not boot if I have the bios switch on my modded bios. Will work fine on stock as it is UEFI.
Edited by Joshwaa - 4/23/17 at 6:25pm
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post #2503 of 3375
post #2504 of 3375
Quote:
Originally Posted by soxfor View Post

Yup, exact reason I've tried the RX580 bios, for a middle step in memory clocks. Went back since started to get memory errors at the same clocks.
yes, thats what my testing is showing as well. clock for clock, I am getting hundreds of memory errors with the 580BIOS and none with my std Powercolor 480 one
its a pity because this 580 BIOS gives me this extra OCing headroom to achieve the 2-3fps I need in some more NVIDIA optimised games

I have tried to increase memory voltage in wattman to 1150mv but it wouldnt fix the memory errors so I guess I am going back to 480Bios now
post #2505 of 3375

Thanks for this. Hopefully I am good enough to pull it off.
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post #2506 of 3375
I find 17.1.2 WHQL has better DX12 & Vulkan Draw Call Performance by as much as 25%... The latest 17.4.3 does best on Single Threaded DX11...


post #2507 of 3375
after more testing, rx480 nitro original bios seems more stable whene it comes to memory OC, at 2070+, 580 bios start to trow memory errors.With 480 bios i'm at 2080 right now and still no errors ( i'm increasing the oc by 5 mhz and do my test in actual 1+ hour gameplay, 10 mhz is not much but my test its not done yet )
post #2508 of 3375
it seems lots of you guys confirming these memory errors I am experiencing too.is there a possibility then that the memory controller on the 580cards is actually different from ours 480 owners? or is there something different.

my memory can OC to 2250 on my 480bios without errors, I am going t check the 580Bios with lower clock speeds to see what happens
post #2509 of 3375
they are different for sapphire . if i remember right rx480 has a 5+2 and rx580 has a 4+1 ( that works as a 3+1 x2)

i also seen discussions that the 1342 mhz one has 6 gpu phases, but that's only talk
Edited by HaoSs - 4/23/17 at 11:53pm
post #2510 of 3375
I see. need to check my powercolor situation then.
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