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Polaris Bios Editing ( RX5xx / RX4xx ) - Page 82

post #811 of 3400
Quote:
Originally Posted by dobermann24 View Post

hey, im new here. I have a rx460 nitro 4gb. Any Stable OC Bios ? And any chance to unlock the stream processors (896). I dont find anything in this thread. Sorry for my bad englisch.^^
download the wattool from first post. You dont need seperate bios for gaming.
post #812 of 3400
Hi everyone, I've created an eGPU based on the RX480 in combination with the Akitio 2 PCIe box. The setup works flawlessly with latest AMD drivers. But in Mac OSX I run into power issues because of the PCIe power consumption issues, despite the hardware modifications to the PCIe power.

Would it be possible to flash the bios to make the fixes they did in the Windows drivers default for the graphics card? I suspect that this will fix my issues with Mac OS.
post #813 of 3400
Quote:
Originally Posted by FricoRico View Post

Hi everyone, I've created an eGPU based on the RX480 in combination with the Akitio 2 PCIe box. The setup works flawlessly with latest AMD drivers. But in Mac OSX I run into power issues because of the PCIe power consumption issues, despite the hardware modifications to the PCIe power.

Would it be possible to flash the bios to make the fixes they did in the Windows drivers default for the graphics card? I suspect that this will fix my issues with Mac OS.

The "issue" was way over exaggerated, but beyond that are you using aib or reference? Should never be a thing on AIB boards as they tweaked the power delivery. Need more info and there is already a bios for reference cards.
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post #814 of 3400
Hi guys. I was trying to run a custom bios on my XFX RX 480. Under boot there is a beeping message, but I can log in after some seconds. The problem is though, I can't run furmark or MSI Kombustor. FurMark won't open at all, and MSI Kombustor program opens, but it crashes when trying to start a stress test. What to do?
Driver version 19.10.1
Edited by webtag - 10/13/16 at 1:29pm
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post #815 of 3400
Quote:
Originally Posted by Echoa View Post

The "issue" was way over exaggerated, but beyond that are you using aib or reference? Should never be a thing on AIB boards as they tweaked the power delivery. Need more info and there is already a bios for reference cards.

where is the bios that has the pcie power issue fixed in it? And will it work on XFX RX 480 REF.
post #816 of 3400
Fixed it! By accident because I have no idea why this worked:
1. Went into HEX Editor, changed the timings on the original bios exactly like the modded bios. After doing this, the only difference between the MOD.ROM and the HEXMOD.ROM was one value in the beginning. This value corresponded to the checksum value being displayed in Polaris Bios Editor when opening up each of these roms. The HEXMOD.ROM got an invalid checksum error when opening it in Polaris Bios Editor.
2. I left the 'error' and because I had read somewhere to not care about it, flashed the 'invalid' HEXMOD.ROM into my GPU. ATIWinFlash gave me confirmation of the flash but on the confirmation screen the vendor ID and other crucial information was empty or error.
3. I did not trust it and, without restarting, immediately flashed back my original MOD.ROM, the one with the valid checksum.

I rebooted my computer for good measure and suddenly realized: no beeps! I can get in the bios AND have the tighter memory timings for mining and gaming. No idea why that worked, I guess GPU ROMS are kind of finicky...

Anyway, thanks for anyone reading my post, hope this helps someone.
post #817 of 3400
Quote:
Originally Posted by Echoa View Post

The "issue" was way over exaggerated, but beyond that are you using aib or reference? Should never be a thing on AIB boards as they tweaked the power delivery. Need more info and there is already a bios for reference cards.

I use an XFX Radeon RX480 XXX OC Backplate (RX-480M8BFA6), not sure if this qualifies as a reference card. Even though the issue is over exaggerated, it is very noticeable for me because I already use the PCIe slot beyond specifications (power delivery was officially limited to 25W). In theory the PCIe slot should get 'unlimited' power from the PSU directly, but it's still not stable in Mac OSX.

Where can I find the tweaked reference bios?
post #818 of 3400
Quote:
Originally Posted by FricoRico View Post

I use an XFX Radeon RX480 XXX OC Backplate (RX-480M8BFA6), not sure if this qualifies as a reference card. Even though the issue is over exaggerated, it is very noticeable for me because I already use the PCIe slot beyond specifications (power delivery was officially limited to 25W). In theory the PCIe slot should get 'unlimited' power from the PSU directly, but it's still not stable in Mac OSX.

Where can I find the tweaked reference bios?

Yes that's reference, it's here on the forums. I think The Stilt made it but could be wrong
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post #819 of 3400
Quote:
Originally Posted by FricoRico View Post

Where can I find the tweaked reference bios?

The tweaked VRM power balancing ROM was withdrawn by The Stilt. At the time bios signature check was enforced by driver on windows, so card with mod rom would not get into OS.

It will still not bring PCI-E power usage as low as past AMD cards with PCI-E plugs on PCB or the 25W you state. IIRC knocks about 10% off, I think TPU/PC PER/THG have articles on RX480 with driver which had VRM balancing shift.

As you run MAX OSX do you still need UEFI/GOP enabled ROM? if so a modded ROM will not work, as it will fail check if mobo running in "pure UEFI" mode (ie CSM=OFF), again only applicable if mobo is UEFI.

I have a modded UEFI which will work with CSM=Off, Fast Boot=On, but not with Secure Boot=On, done for me by Lordkag of Fernando's Win-RAID forum. I can also make mod ROM with VRM balancing edit, if you like.
Edited by gupsterg - 10/14/16 at 3:31am
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post #820 of 3400
Quote:
Originally Posted by gupsterg View Post

The tweaked VRM power balancing ROM was withdrawn by The Stilt. At the time bios signature check was enforced by driver on windows, so card with mod rom would not get into OS.

It will still not bring PCI-E power usage as low as past AMD cards with PCI-E plugs on PCB or the 25W you state. IIRC knocks about 10% off, I think TPU/PC PER/THG have articles on RX480 with driver which had VRM balancing shift.

As you run MAX OSX do you still need UEFI/GOP enabled ROM? if so a modded ROM will not work, as it will fail check if mobo running in "pure UEFI" mode (ie CSM=OFF), again only applicable if mobo is UEFI.

I have a modded UEFI which will work with CSM=Off, Fast Boot=On, but not with Secure Boot=On, done for me by Lordkag of Fernando's Win-RAID forum. I can also make mod ROM with VRM balancing edit, if you like.

That is a really detailed answer! Thanks for the heads-up about it not being compatible with AMD drivers and Mac OSX by default.

I would be very interested in an modden UEFI Bios with CSM and Secure Boot turned off and Fast Boot support. That should work perfectly in my circumstances!
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