What i did was dump my stock bios with PolarisEditor, change whatever settings that was on @boysie 's rom, save it and then flashed em all to my 6 cards, no issues
Dual Mining on the above setting will put my rig at almost 1100W @ the wall, and I am on a single 1050W PSU, had to drop em down to single mining mode for now.
pulling 1100w at the wall is perfectly fine on a 1050w output PSU.
Just a warning to anyone who wants to try this ROM.. don't flash it to your PowerColor RX 480 Red Devil. Once I successfully force flashed it to my card, I rebooted the machine, and the computer refused to boot with the card. The fans would turn on and off one by one too, like it was going haywire.
Lucky for me, I forced my mainboard bios to boot from my onboard intel GPU, and once in windows, it detected the card, but called it a standard VGA device. Atiflash amazingly was able to detect the card and I could flash the old ROM back onto the card. Everything works normally now.
I wont be playing with any more custom ROMs until someone makes one specific for the PowerColor cards.
@boysie why don't you grab the new official ROM that was released by PowerColor and take a look at it? You can download it at the link below.
Dual Mining on the above setting will put my rig at almost 1100W @ the wall, and I am on a single 1050W PSU, had to drop em down to single mining mode for now.
pulling 1100w at the wall is perfectly fine on a 1050w output PSU.
alrighty! Running em 6cards at 186Mh / 2045sia @1150W at Wall.
@boysie i put the values of your bios (bios editor) in wattmon and adjusted it just like yours.. i get 22Mh (normally it does 24.8 stock) on red devils .. Is wattmon different then flashing the rom (yes i know you cant change TDP without flashing rom)?
with stock rom hashrate doesnt change when i alter the GPU or mem clock by a few 100 MHZ, wich i find weird
What is the reason for slowly decreasing hashrate on my 480? The GPU is NOT throttling, the frequencies are rock solid, but the hashrate goes down slowly by 1-2% after I start the miner with your v2 BIOS. I guess it's caused by memory errors, that the card is trying to correct meanwhile, so it causes loss in performance. But it does not show a single invalid share, or any flaws in the log.
So is this the scenario when the memory is very close to the limit, but working still stable while successfully correcting the errors in memory operations..?
I am seeing this behaviour with your bios at [email protected] (I lowered the min memclk)
I would give some more voltage to the memory, but the problem is that it also raises the Vcore automatically..:(
Is there a workaround for that? I would like to give 975 for mem and 950 for GPU
@boysie any chance for a sapphire/msi rom? Im not sure how to edit the bios and dont feel comfy doing it. I saw a few cmd options on aitlfash but didnt want to fuck it up. Would love to have a 6785 rom to test.
@boysie any chance for a sapphire/msi rom? Im not sure how to edit the bios and dont feel comfy doing it. I saw a few cmd options on aitlfash but didnt want to fuck it up. Would love to have a 6785 rom to test.
I load these onto my ref sapphire 8GB and 4GB cards with no issues at all.
use ATIFLASH -f -p 0 file.rom
0 is the index of the card you want to flash and file.rom is the rom you are flashing.
Also I have no way to build a non ref rom, I'm looking at replacing my 390s so maybe I will end up with AIB's but ref is where the party is at for now.
VRM is not the RAM, it is the Voltage Regulator Module It is OK up to about 100C (under 95C for long term)
that.
Not sure what else to check then, I've seen it happen on one of mine with v1 but it no longer happened with v2, its linked to the speed of the ram, the only option I can offer is a 2220 base clock for them cards to test.
My 480 does this even at 2200 memclk. I took it down to 2175 and it stopped. So my guess with the memory faults seems to be the issue. Raising the real mem voltage would be a solution. Maybe Im gonna check that later. The atom bios parser script tells where that is if i remember correctly.
I keep getting freezes from claymore when using this rom though. Happens anywhere from 1hr to 6 hrs of running. The system then hangs and have to physically reset the computer
I am getting a black screen, might need to have a look at creating a ROM myself detuned a little but never done it before
just edit my rom and change the mem that says 2250 down to 2000 that way you can up tune until it works, the only down side is when wattman resets due to some problem it will pop back down to 2000 but at least you can use it to test what your card is capable off.
bottom one is test rig on 31.5 rom, this one previously showed the issue someone else saw with their hash dropping to 20-27 but with v2 it doesn't...not sure I can explain why.
Comments
Still hitting close to 1030W when dual mining..
I should not let my psu run over its limit constantly yea? Using a single 1050W Platinium psu.
I am on Boysie's 31.15 Ref Rom and using reference 480s
It wouldn't be right uploading a bios that I cant test myself. my latest v2 is on all my Ref 480s. and no issues for 19h dual mining so far.
Boysie
i get 22Mh (normally it does 24.8 stock) on red devils ..
Is wattmon different then flashing the rom (yes i know you cant change TDP without flashing rom)?
with stock rom hashrate doesnt change when i alter the GPU or mem clock by a few 100 MHZ, wich i find weird
The GPU is NOT throttling, the frequencies are rock solid, but the hashrate goes down slowly by 1-2% after I start the miner with your v2 BIOS.
I guess it's caused by memory errors, that the card is trying to correct meanwhile, so it causes loss in performance.
But it does not show a single invalid share, or any flaws in the log.
So is this the scenario when the memory is very close to the limit, but working still stable while successfully correcting the errors in memory operations..?
I am seeing this behaviour with your bios at [email protected] (I lowered the min memclk)
I would give some more voltage to the memory, but the problem is that it also raises the Vcore automatically..:(
Is there a workaround for that?
I would like to give 975 for mem and 950 for GPU
wattmon shows mem temp or some thing like that I expect its topping out and throttling it.
new heat pads and re working the heat sink can help here else its just to much for that card. This is why watercooling is so good.
Boysie
makes sense coz mem has only one state.
It is OK up to about 100C (under 95C for long term)
use ATIFLASH -f -p 0 file.rom
0 is the index of the card you want to flash and file.rom is the rom you are flashing.
Also I have no way to build a non ref rom, I'm looking at replacing my 390s so maybe I will end up with AIB's but ref is where the party is at for now.
whats a 6785 rom? link?
that.
Not sure what else to check then, I've seen it happen on one of mine with v1 but it no longer happened with v2, its linked to the speed of the ram, the only option I can offer is a 2220 base clock for them cards to test.
Boysie
I took it down to 2175 and it stopped.
So my guess with the memory faults seems to be the issue.
Raising the real mem voltage would be a solution.
Maybe Im gonna check that later.
The atom bios parser script tells where that is if i remember correctly.
812 watts at the wall.
I keep getting freezes from claymore when using this rom though. Happens anywhere from 1hr to 6 hrs of running. The system then hangs and have to physically reset the computer
Boysie
top 2 are 390s, bottom 2 are 480s
bottom one is test rig on 31.5 rom, this one previously showed the issue someone else saw with their hash dropping to 20-27 but with v2 it doesn't...not sure I can explain why.
here is the test rig4 gpuz
this is a evga 850w P2 @ 230v with 2x 480s and the system (about 45w) note: the other 3 cards are on a 2nd PSU.
Taking the high reading of 390w
390 - 45 = 345w
345 /2 = 172.5w @ wall
172.5 / 0.94 = 162w @ card
Boysie
Now i run under 16.04 with your Linux rom.
3x rx480 8GB powercolor ref
Eth: 27-30mh/s
Sia: 270-320mh/s
Under 650w @ wall
Edit: after e few minutes it hangs complete.
I lowerded the memclock to 2200 and now it seems stable.
But i only get 26-28mh/s eth on ubuntu, eth only and dual mining, makes no difference.