[UPDATE] RX480 (Ref) 31+Mh, Custom Rom - VDDC OFFSET + Custom timing

[iamnoobplzhelp]

I modded my bios yesterday after this I cannot see temp readings or gpu frequency in gpu-z. anyone knows why?
asus dual 4gb
Thanks

Usually a driver signing issue. The original poster has the fix. Download the program called "Atikmdag Patcher", run it, patch, and restart. Sometimes I have to do it twice to get it to work.
Also, make sure you're using 16.x.x drivers, as the 17.x.x drivers won't work with modded bioses without some work.

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[jahras]

I modded my bios yesterday after this I cannot see temp readings or gpu frequency in gpu-z. anyone knows why?
asus dual 4gb
Thanks

Usually a driver signing issue. The original poster has the fix. Download the program called "Atikmdag Patcher", run it, patch, and restart. Sometimes I have to do it twice to get it to work.
Also, make sure you're using 16.x.x drivers, as the 17.x.x drivers won't work with modded bioses without some work.

Thanks, tried it but still no readings from gpu-z

[iamnoobplzhelp]

I modded my bios yesterday after this I cannot see temp readings or gpu frequency in gpu-z. anyone knows why?
asus dual 4gb
Thanks

Usually a driver signing issue. The original poster has the fix. Download the program called "Atikmdag Patcher", run it, patch, and restart. Sometimes I have to do it twice to get it to work.
Also, make sure you're using 16.x.x drivers, as the 17.x.x drivers won't work with modded bioses without some work.

Thanks, tried it but still no readings from gpu-z

I have this problem if the card is not plugged in directly. Once I plug the video card in to a monitor, then GPU z will detect it. Very annoying. Not sure what the fix is here.

[bwickstrom]

Hello,

I'm setting up my first rig and have (6) XFX RX480 8GB Black Edition cards. When I open my bios in Polaris Bios Editor, under timing I am not getting the same numbers as described in the examples. For example the first line is 26916491. Therefore I do not know which line to copy and past for the modification.

I tried applying one of the bios files supplied by the author, but when I did that Windows 10 would not recognize it. I had to boot into the command prompt and install the default bios to get it working again.

Can you help?

Thank you,

Brian

[almirfiorio]

VDDC Offset + Basic Custom timing
------------------
Here's a nice update for those who have Reference cards.
In the package included, i've put 4 roms with VDDC offset.

1. -50mV
2. -69mV
3. -81mV
4. -100mV

You can of course adjust these however you want, if you want to have an even tighter undervolt you can search the rom for this --> "8D 00 F8(-50)00" and replace the F8 part with EE(-112) for example.

These roms also have a custom timing included. It's a basic one but it will give you a very high increase for XMR.

Greetings and have fun!

Dear Eliovp

My card is Sapphire RX 480 Nitro 4gb (not nitro+)

Im can apply this rom ?

Can help me ?

Thanks
Almir

[Truthchanter]

VDDC Offset + Basic Custom timing
------------------
Here's a nice update for those who have Reference cards.
In the package included, i've put 4 roms with VDDC offset.

1. -50mV
2. -69mV
3. -81mV
4. -100mV

You can of course adjust these however you want, if you want to have an even tighter undervolt you can search the rom for this --> "8D 00 F8(-50)00" and replace the F8 part with EE(-112) for example.

These roms also have a custom timing included. It's a basic one but it will give you a very high increase for XMR.

Greetings and have fun!

Dear Eliovp

My card is Sapphire RX 480 Nitro 4gb (not nitro+)

Im can apply this rom ?

Can help me ?

Thanks
Almir

I don't think so, it "could" work but not necessarily and I wouldn't try it. it's easy enough to use polaris bios editor to mod your own rom there are guides or just ask for help

[grimmi]

Hello,

i tryed someting to mod my XFX 480 8 GB Coreedition, but it's not working for me.
is there anyone who can help me, when i pay for the help? if yes please contact me PM. Thanks

[kors]

Hey guys,

my card is SAPPHIRE NITRO+ RX 480 8GB OC, win10, Crimson 16.9.1
I have few questions please
I would like to flash the card with Jukebox v4.rom file. I can flush rom file with 256KB, but v4.rom file has 512KB.
I've copied the values from v4 to a previous silent rom file (256KB), but after some time - its crashing
any idea?
Thanks in advance!!!

[alucard20724]

has anyone used these roms with equihash(zcash)?  I mine for most profitable and so my system goes back and forth between eth and equi.  Was wondering what you got.  I mine claymore's permutations.

i did a search in this thread and didn't find anything.  summer time is approaching and in need to reduce my heat signature, but keep the same or better output.

[Alubert]

has anyone used these roms with equihash(zcash)?  I mine for most profitable and so my system goes back and forth between eth and equi.  Was wondering what you got.  I mine claymore's permutations.

i did a search in this thread and didn't find anything.  summer time is approaching and in need to reduce my heat signature, but keep the same or better output.

For the 4x0 cards, it is better to mine ETH.

[alucard20724]

has anyone used these roms with equihash(zcash)?  I mine for most profitable and so my system goes back and forth between eth and equi.  Was wondering what you got.  I mine claymore's permutations.

i did a search in this thread and didn't find anything.  summer time is approaching and in need to reduce my heat signature, but keep the same or better output.

For the 4x0 cards, it is better to mine ETH.

that doesn't answer the question asked.

[coinbeamer]

I must admit to use Ethos with 7 gpus mining eth, 480 Nitro+ 8GB.

My 1200W PSU uses 1.27kW(!!) at the wall while mining with 28.86hs

What is the best bios to get the power down - i already tried some, but no success ...

[Foss]

I must admit to use Ethos with 7 gpus mining eth, 480 Nitro+ 8GB.

My 1200W PSU uses 1.27kW(!!) at the wall while mining with 28.86hs

What is the best bios to get the power down - i already tried some, but no success ...

Sapphire RX 480 Nitro+ 8GB 11260-07? Memory samsung?

[Wewisk]

I must admit to use Ethos with 7 gpus mining eth, 480 Nitro+ 8GB.

My 1200W PSU uses 1.27kW(!!) at the wall while mining with 28.86hs

What is the best bios to get the power down - i already tried some, but no success ...

I think you can use the afterburner to reduce the voltage.

[doktor83]

no afterburner on ethos

[Mister305]

I have a miner mixed with 480 and 580 , can you have drivers 16... for the 480 and driver 17.... for the 580 or will the whole machine have to be 17....? As of right now the whole miner is 17 ... and it seems slow and fluctuates too much in speed

[binarydelic]

Hello,
I tried downloading the custom RX480 Ref ROM for Linux with the link provided on page 3 of this thread (http://www.mininghwcomparison.com/RX480-30MhOTB.zip) but the website just times out.  Trying to run on ethOS rig. Any help is appreciated!

[binarydelic]

Hi Eliovp,

First off, thank you for taking the time to create the RX 480 Ref ROMs and sharing.
I tried downloading the custom RX480 Ref ROM for Linux with the link you provided (http://www.mininghwcomparison.com/RX480-30MhOTB.zip) but it seems the file is no longer there.  Can you let me know where else I could download the file from.  Trying to run on ethOS rig. Thanks again!

Kevin

==================================================================================

Haven't had time to read all the replies.. sorry for that.

For the linux guys.

Rom is here: Here


For Windows 10 users, you can do this:

i) Press Windows Key + X to open Power User Menu. Select Command Prompt (Admin) from the menu.
ii) Once the Command Prompt open, enter bcdedit.exe -set loadoptions DISABLE_INTEGRITY_CHECKS and press Enter. Then enter bcdedit.exe -set TESTSIGNING ON and press Enter.
iii) Close Command Prompt and restart your PC.

If this fails for some reason, you can reboot with Signature checks disabled by rebooting into advanced options (Hold left shift key while hitting reboot button) and hit F7.

You need to copy the modified atikmdag.sys file into your drivers folder as well (C:/Windows/System32/Drivers)

File can be found here: Here

Rom has modified timings and higher limits. (Memory 2275, higher tdp limit...)

I'll do an energy friendly rom later this week.

For the Windows 7 users, i'll look into that this week.

Greetings

[TechPark]

Hello,

I'm setting up my first rig and have (6) XFX RX480 8GB Black Edition cards. When I open my bios in Polaris Bios Editor, under timing I am not getting the same numbers as described in the examples. For example the first line is 26916491. Therefore I do not know which line to copy and past for the modification.

I tried applying one of the bios files supplied by the author, but when I did that Windows 10 would not recognize it. I had to boot into the command prompt and install the default bios to get it working again.

Can you help?

Thank you,

Brian

I have the same card. If you paste the screenshot from PBE I should be able to guide you further.

[jk21]

Hello there are my 3 asus strix rx 480 cards And there are 2 asus strix rx 580 cards For the first time I watched the videos I made and everything is correct. 580's working 480's were exclamation mark and did not work.
I have updated the driver. I do not know how to make atimdag.sys file Atimdag-patcher my system did not work.

Can you send a running rom 28 29 mhs enough?
Or do you have a suggestion thank you

Which driver version should I use. The most current installed.