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

[greaterninja]

You should be able to get 28-32 mhs even on a rx 480 sapphire nitro.

Download your bios with atiflash, open it in polaris bios editor.

Copy the memory timing for the 1500 or 1750mhz to the 2000 mhz and higher blocks.

I believe you can copy 1500mhz memory timing code to 1750 and 2000 blocks.

Make sure you backup original bios first.

[1713891381]

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[Munchee]

You should be able to get 28-32 mhs even on a rx 480 sapphire nitro.

Download your bios with atiflash, open it in polaris bios editor.

Copy the memory timing for the 1500 or 1750mhz to the 2000 mhz and higher blocks.

I believe you can copy 1500mhz memory timing code to 1750 and 2000 blocks.

Make sure you backup original bios first.

I don't think you can reach 28 mh's on this card surely. It's 4GB the one I got, if it were 8GB then yes possible. Right?

[c1oud]

"Asus Radeon RX 480 Strix Gaming AMD"
https://www.asus.com/Graphics-Cards/ROG-STRIX-RX480-O8G-GAMING/

Guys, what do you think about this 1? It seems it's not reference design. Does any of the rom's can be installed?
Any1 tryed to mine with this ones?  core clock at default at 1330 MHz. Considering to make a new 6 card rig with them. Need suggestions. thx

[greaterninja]

You should be able to get 28-32 mhs even on a rx 480 sapphire nitro.

Download your bios with atiflash, open it in polaris bios editor.

Copy the memory timing for the 1500 or 1750mhz to the 2000 mhz and higher blocks.

I believe you can copy 1500mhz memory timing code to 1750 and 2000 blocks.

Make sure you backup original bios first.

I don't think you can reach 28 mh's on this card surely. It's 4GB the one I got, if it were 8GB then yes possible. Right?

I don't have much time to explain so please forgive me.

I have a few rx 480 4gb cards and they do 29 - 31 mh/s easily.
rx 470 4gb can do 28-30 mh/s as well.

You need to copy the memory timing in polaris bios editor to the 1750mhz and 2000 mhz memory timing slots.  The biggest gain is by modifying the memory timing / bootstrap.  Second biggest gain and efficiency is by using MSI afterburner and tweaking GPU voltage, mhz, etc.

Try to change the default memory clock from 1750 mhz to target 2000 - 2050 mhz memory on 4gb cards.  If it fails scale it down to 1950 mhz, 1900mhz, 1850mhz, 1800mhz until you find a stable memory clock to mine with.

The only cards I've had problems bringing memory clock up is msi rx 480 4gbs.

[Truthchanter]

There is some Elpida mem out there, that even when modded with the 1500 strap, that seems only stable at 26-26.5 mhs or so

I experienced this with a 480 4gb nitro (not nitro+)

[Eliovp]

There is some Elpida mem out there, that even when modded with the 1500 strap, that seems only stable at 26-26.5 mhs or so

I experienced this with a 480 4gb nitro (not nitro+)

They do 30Mh as well.. (those nitro's)

Got 2 Elpida 4G's, one nitro and one non nitro, the nitro one does 30+ and the non nitro one does 29.5 stable.

But this is with custom timings.

Greetings

[Munchee]

There is some Elpida mem out there, that even when modded with the 1500 strap, that seems only stable at 26-26.5 mhs or so

I experienced this with a 480 4gb nitro (not nitro+)

They do 30Mh as well.. (those nitro's)

Got 2 Elpida 4G's, one nitro and one non nitro, the nitro one does 30+ and the non nitro one does 29.5 stable.

But this is with custom timings.

Greetings

I can post the ROMs that I am using to get 25 mh if you want to try and edit them and I can test, sadly I'm not too comfortable at editing them myself even though I feel the info posted above is more than enough.
I am about a week away from turning my 3 pc's into 1 unit with risers so am in no rush to re flash the cards for the next few days

[joaogti36]

asus rx 480 dual 8g
what will work with this card?
tryied the 30mod and 31 and no go...

[DrX]

I got some RX480 8G Sapphire Nitros with micron memory SN: A1704.... Bad luck :\

Is there anything I can do to get more hash from these?

Now mining low power mode...

I'm now mining Ether 25Mh/s each and Afterburner showing 65w.

Settings 1050/1750 and -97 Voltage.


 

[Munchee]

Okay well I just went in and did it cause I love getting more MH/s..

Currently at 30mh haha, this is kinda ridiculous

Just gonna run 1 card at that rate overnight, make sure its stable..

Edit* 2100mhz producing a lot of invalid shares, down to 2000mhz and looking constant 29.5 so pretty happy

[citronick]

I got some RX480 8G Sapphire Nitros with micron memory SN: A1704.... Bad luck :\

Is there anything I can do to get more hash from these?

Now mining low power mode...

I'm now mining Ether 25Mh/s each and Afterburner showing 65w.

Settings 1050/1750 and -97 Voltage.

there is a 30MHlowenergy rom link in the last page.

All of my Sapphire 480 Refs rigs are with "28MHlowenergyOK" rom, but I have one or two rigs with 30MH one... not bad on ETH mining however ETH mining consumes too much power and too much heat -- it's like a death sentence for the card, stretching it beyond 30mh is not good because for ETH you need stable cards -- having the low power roms and slightly faster than 25/26MH like 28MH or 29Mh is good enough.

[Munchee]

I got some RX480 8G Sapphire Nitros with micron memory SN: A1704.... Bad luck :\

Is there anything I can do to get more hash from these?

Now mining low power mode...

I'm now mining Ether 25Mh/s each and Afterburner showing 65w.

Settings 1050/1750 and -97 Voltage.

there is a 30MHlowenergy rom link in the last page.

All of my Sapphire 480 Refs rigs are with "28MHlowenergyOK" rom, but I have one or two rigs with 30MH one... not bad on ETH mining however ETH mining consumes too much power and too much heat -- it's like a death sentence for the card, stretching it beyond 30mh is not good because for ETH you need stable cards -- having the low power roms and slightly faster than 25/26MH like 28MH or 29Mh is good enough.

Does that low energy ROM work on the 4GB card?

[panamax]

Good day....

new to mining and started to build myself a mining prototype with a bunch of unused stuff i had around + bought 3 RX480-8Gb XFX Reference design cards
XFX Radeon RX 480 DirectX 12 RX480M8BFA6 8GB 256-Bit GDDR5 PCI Express 3.0 CrossFireX Support Video Card

i started mining ETH, and hashed around 24mhs per card as it may should be expected.
I tried to flash with the 30mhs version on page 1, but got some kind of error message that i don't recall right now...
i then downloaded my cards bios and modified it by copying  the second last memory string to the last one (i guess the 1750 to the 1900, if i recall right)

This worked and improved the hash rate to about 25-26mhs.

However, im really interested in flashing to the most powerful and efficient bios possible.
Can somebody take me by the hand and guide me to how and what bios I can flash?

Thank you & have a nice day!

[Truthchanter]

Are there any publicly available custom memory strap timings for the rx 400 series? (samsung, elpida, or hynix)

EDIT: found hynix and elpida from Eliovp, thanks!

[DrX]

I got some RX480 8G Sapphire Nitros with micron memory SN: A1704.... Bad luck :\

Is there anything I can do to get more hash from these?

Now mining low power mode...

I'm now mining Ether 25Mh/s each and Afterburner showing 65w.

Settings 1050/1750 and -97 Voltage.

there is a 30MHlowenergy rom link in the last page.

All of my Sapphire 480 Refs rigs are with "28MHlowenergyOK" rom, but I have one or two rigs with 30MH one... not bad on ETH mining however ETH mining consumes too much power and too much heat -- it's like a death sentence for the card, stretching it beyond 30mh is not good because for ETH you need stable cards -- having the low power roms and slightly faster than 25/26MH like 28MH or 29Mh is good enough.

Tested, didn't work. I think that rom is for refs.

Got it to mine Ether 28Mh/s with copying 1625 straps to 1750 and 2000. Afterburner is showing now 89w.
With 1050/2000, -97 Voltage.

[aikklond]

Guys how about roms for 470 4gb cards?

I   am looking for sapphire nitro and msi more specifically.

Should I just do it with Polaris bios editor?

Is there a guide for that?

Also will those timming make the cards unstable for mining other coins like ZEC?

[Truthchanter]

Guys how about roms for 470 4gb cards?

I   am looking for sapphire nitro and msi more specifically.

Should I just do it with Polaris bios editor?

Is there a guide for that?

Also will those timming make the cards unstable for mining other coins like ZEC?

Mining other coins with the modded bios should be fine (at least was for me). Yeah there are guides and its worth it and easy enough imo. Basically use GPUz to extract the gpu bios and open it with polaris bios editor... if you have hynix or elpida mem copy the 1500 straps to the higher ones (1500 to 1625, 1750, 1900, 2000). if you have samsung mem, you can copy the 1750 (or maybe even 1625?) to the higher ones.

use atiflash to flash the cards in CMD admin mode

[Stet1]

The LowEnergy Rom is impressive. 
The others are impressive as well.



TO keep things safe for now, I will be running the LowLow Energy rom while I am busy studying .

I also made a bios for the VisionTek 480 8GB Reference card rom.  It has Samsung ddr5 memory, but has a different flash ROM.   M25P20/c  which is 256kb versus the others that are at least 512kb.

This took me over a day as it does not behave like the other RX 480 cards I have.  Performance is about 8-12% gain over stock.  I'm sure there is plenty more room to go.

Where can I download this rom for the VisionTek?

[pornluver]

I see the Op post a bunch of .rom file in zip. Which one I should use? What tools I should use to install the rom? Should I change the driver too?

[dagarair]

if its not a reference model it will not work.  You have to buy the others as he is a custom fw god. 

/bow