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

[zimbo123]

For Dual-Mining you should use the RX480-32MhOTB BIOS. I reached 30.5 MH and about 450 MH for SIA. And was very stabil.
But be careful you need very good cooling.
Use the latest driver 16.9.1

[maxmad_x]

Anyone tried 16.9.2 yet?

I am running one PC on 16.7.3 and other one today is reinstalled fresh on 16.9.2 and it works fine.

[maxmad_x]

May times I get error on the XFX 8 gb card that OpenCL crash. On other cards it is running fine. Any ideas?
something like this on the log
11:11:45:949   129c   send: {"id": 4, "method": "mining.submit", "params": ["something","752","0x00adb0780adf0226","0x6a34cdf8cc2aaf574ed1abfd7a633b869d5fb351f78a20a4f95375249fea86d5","0x6fbb6cac4d21892c667fdee33b8d674e27986cb3aa6211fb516200fb842e7245"]}


11:11:46:141   129c   got 41 bytes
11:11:46:144   129c   buf: {"error": null, "id": 4, "result": true}

[zimbo123]

@maxmad_x

You have the XFX reference Card https://www.amazon.com/XFX-RADEON-Graphics-Backplate-RX480M8BFA6/dp/B01H3P9CKI/ref=sr_1_fkmr1_4?ie=UTF8&qid=1474568886&sr=8-4-fkmr1&keywords=x480+xfx ?
Which Bios you tried? Winflash 2.7.4?

[maxmad_x]

I used 31Mh rom. That rom is for 4gb card so I the only edit I did was to change it to 8gb. Otherwise nothing was changed. Its a buffer error I guess I was not supposed to change anything.

[Lion BItcoin Shop]

Anyone tried 16.9.2 yet?

i have tried it, running smoothly without any issue.
using the 29mhs low power, i can stable at 29.5mhs with 90watt powerdraw at gpu z

[xxcsu]

Anyone tried 16.9.2 yet?

Tried yesterday on a 6 RX480 crads setup then rolled back to 16.9.1
For some reason my setup is got unstable with 16.9.2

[lexele]

While mining XMR with modded 480s (low power version).... I find card runs cool but when mining ETH, temps runs high. Both mining using Claymore miners.

Anyone get the same scenario?

Hi,
I tested on RX 470, there's 25-30w less on the wall while mining XMR. Whole system a lot more stable.
The obvious difference I can see in GPU-Z is the use of the MEM controler 100% (eth with claymore) vs 25-30% (XMR with claymore).

[citronick]

Anyone tried 16.9.2 yet?

i have tried it, running smoothly without any issue.
using the 29mhs low power, i can stable at 29.5mhs with 90watt powerdraw at gpu z

Can help measure watt from power point using kill-o-watt?

[marvykkio]

Rx 480 8 gb  http://imgur.com/Gcac4Va

Rx 470 nitro 8gb http://imgur.com/a/3ESRo


guys can point me to the correct rom mod for these cards?
and an easy guide.
one more question if I put the rom hack I'm forced to enable signing?
thank you very much

[rednoW]

all of you editing timings and oc'ing memory to 2200 and higher on rx470/480 - check gpu memory error counter in hwinfo program (check sensors). I was able to stop this errors only lowering memory to 2100mhz ( I have samsung one without cooling).
It seems that this errors don't directly harm stability or performance of eth mining, but nevertheless )))

[Walrusbonzo]

Many thanks Eliovp, great work on the BIOS mods.

I currently have several 290x all with my own custom BIOS(mainly 1000/1250 and undervolted as much as possible). But just bought my first reference 4GB RX480 and thought I'd start off with one of your BIOS.

Turns out the card is actually an 8GB one! Just with a 4GB sticker stuck on the box.

Default BIOS gave me 24.5mh/s at 1288/2000

Your 31mhlowpower one gives me 30.6mh/s at 1191/2200.

I've now started tuning in software and found the card will still do 30.6mh/s with RAM set back to 2000. Just wondered if there was a particular reason you set it to 2200? Did it provide better performance for you over 2000?

Currently I've got MSI AB vcore offset set to -96mv, card has been rock solid for the last 20 hours still at 1191/2000. I think this vcore can go way down, time to do some further BIOS mods. GPUz reports about 85 GPU watts for 30.6mh/s at this setting, nice!

Thanks again for already doing most of the hard work  


EDIT: Found your secret sauce for the extra 2MH/s that doesn't come from memory timings.   Or clockspeeds for that matter.... Having read every page of this thread and having seen some people question a certain issue, I did wonder why no one had answered the reason why.

[Ambros]

EDIT: Found your secret sauce for the extra 2MH/s that doesn't come from memory timings.   Or clockspeeds for that matter.... Having read every page of this thread and having seen some people question a certain issue, I did wonder why no one had answered the reason why.

What about tell everyone the magic trick ?

[Walrusbonzo]

EDIT: Found your secret sauce for the extra 2MH/s that doesn't come from memory timings.   Or clockspeeds for that matter.... Having read every page of this thread and having seen some people question a certain issue, I did wonder why no one had answered the reason why.

What about tell everyone the magic trick ?

Well, maybe I'm totally wrong. But from my own testing it appears that setting the RAM up for 4GB instead of 8GB gives an extra 2mh/s.

Time for more testing....

EDIT: Think it might be something else totally.....

[citronick]

Many thanks Eliovp, great work on the BIOS mods.

I currently have several 290x all with my own custom BIOS(mainly 1000/1250 and undervolted as much as possible). But just bought my first reference 4GB RX480 and thought I'd start off with one of your BIOS.

Turns out the card is actually an 8GB one! Just with a 4GB sticker stuck on the box.

Default BIOS gave me 24.5mh/s at 1288/2000

Your 31mhlowpower one gives me 30.6mh/s at 1191/2200.

I've now started tuning in software and found the card will still do 30.6mh/s with RAM set back to 2000. Just wondered if there was a particular reason you set it to 2200? Did it provide better performance for you over 2000?

Currently I've got MSI AB vcore offset set to -96mv, card has been rock solid for the last 20 hours still at 1191/2000. I think this vcore can go way down, time to do some further BIOS mods. GPUz reports about 85 GPU watts for 30.6mh/s at this setting, nice!

Thanks again for already doing most of the hard work  


EDIT: Found your secret sauce for the extra 2MH/s that doesn't come from memory timings.   Or clockspeeds for that matter.... Having read every page of this thread and having seen some people question a certain issue, I did wonder why no one had answered the reason why.

Hi Walrus - can you share your 290x mod, I have a few 290 and 290x "lying" around and I was not able to find nor know how to make Stilt BIOS work on the cards. I was thinking, you mod maybe able to help get my 2 x 290 and 2 x 290x (all reference cards). Thanks in advance.

[rednoW]

Well, maybe I'm totally wrong. But from my own testing it appears that setting the RAM up for 4GB instead of 8GB gives an extra 2mh/s.

Time for more testing....

What does it mean??? Not clear...

[Walrusbonzo]

Many thanks Eliovp, great work on the BIOS mods.

I currently have several 290x all with my own custom BIOS(mainly 1000/1250 and undervolted as much as possible). But just bought my first reference 4GB RX480 and thought I'd start off with one of your BIOS.

Turns out the card is actually an 8GB one! Just with a 4GB sticker stuck on the box.

Default BIOS gave me 24.5mh/s at 1288/2000

Your 31mhlowpower one gives me 30.6mh/s at 1191/2200.

I've now started tuning in software and found the card will still do 30.6mh/s with RAM set back to 2000. Just wondered if there was a particular reason you set it to 2200? Did it provide better performance for you over 2000?

Currently I've got MSI AB vcore offset set to -96mv, card has been rock solid for the last 20 hours still at 1191/2000. I think this vcore can go way down, time to do some further BIOS mods. GPUz reports about 85 GPU watts for 30.6mh/s at this setting, nice!

Thanks again for already doing most of the hard work  


EDIT: Found your secret sauce for the extra 2MH/s that doesn't come from memory timings.   Or clockspeeds for that matter.... Having read every page of this thread and having seen some people question a certain issue, I did wonder why no one had answered the reason why.

Hi Walrus - can you share your 290x mod, I have a few 290 and 290x "lying" around and I was not able to find nor know how to make Stilt BIOS work on the cards. I was thinking, you mod maybe able to help get my 2 x 290 and 2 x 290x (all reference cards). Thanks in advance.

There is no gain to made from changing memory timings on 290x. Only voltage/power reductions, but you need to know exactly what every single card is capable of clockspeed/voltage wise. I literally have a different BIOS for each of my 9 cards.

PM me, we can talk about 290x there so as we don't detract from the subject of this thread.

[Walrusbonzo]

Well, maybe I'm totally wrong. But from my own testing it appears that setting the RAM up for 4GB instead of 8GB gives an extra 2mh/s.

Time for more testing....

What does it mean??? Not clear...

Ignore me, totally duff info.... Something else was causing a 2mh/s drop. I've now got 8GB enabled and got back to 30.6mh/s.

[arvita112]

I have this card : MSI Radeon RX 470 Gaming X 8GB (RX470GAMINGX8G)
Which can i use mod bios?

[chudm]

guys need some advice, im making a 2nd rig, and im new to this bios modding stuff, so im looking for a card with dual bios, according to what i had read here the 470 nitro and 480 nitro are both good options right?

I can find the 470 4 gb nitro for 217$ and the 480 4 gb nitro for 229$ which should i choose?