That's my recent setup

powercolor Reddragon rx580 4GB HYNIX

29-30MHs

just set it up testing for overnight see how it goes

Sure PM me.

You can also do this on your own backup your bios using atiflash then open it in Polaris bios editor(make sure it's right ver and reads clocks properly) put same values what I did (first image) and then save as different file.
Use atiflash again to program GPU card with moded bios and  after its completed reset your pc. And play a bit with clocks and voltages.

I didn't change voltages only I upped my clocks a bit 1170/2100 on auto voltages

Here is what i did

5x Sapphire RX580 Nitro+ 4GB Hynix

First of all i have installed drivers.  Win10-64Bit-Crimson-ReLive-Beta-Blockchain-Workloads-Aug23 from official AMD site

Then Bios.

Bios switch - little sitch on my GPU moved to the Outputs (hdmis dvi)

Then i flashed bios. the one from Anorkas site powersaving bios with little mod.See pic.



GPU& MEM voltage modified also TDP and straps are copied from 1:1500  up to 1:2000 and copied from 2:1500 up to 2:2000

after that i just restarted PC

i went to watmann on my radeon driver settings driver setting and i OC GPU and MEM manualy GPU-1170mhz MEM-2100MHZ(crash on 2150 and higher also for 2100 extra cooling helps so it's more stable) - voltage values i left AUTO

IN ethminer i set

ethminer.exe -G -F http://eth-eu.dwarfpool.com:80/MY WALLETT ADDRESS/MY RIG NAME/MY EMAIL IF I WANT TO --cl-local-work 256 --cl-global-work 16384
pause


value --cl-local-work 256 --cl-global-work 16384 should help i did not tryied without it to see if it rly helps

My results are in ethminer test mode im mining 28MHs each gpu, and now my 5x RX580 rig is taking from the wall around 730W where before mod it was 920W si its nearly 200W less !!!! Im happy with that

dwarfpool shows me that my rig is mining average 140MHs sometimes higher sometimes lower but its doing good job mining at that speed and using 200W less !!

sonn ill do some tests on Claymores

So far if i try to mod some CLocks and Voltages on claymore command line it crash!! so just do

EthDcrMiner64.exe -epool POOL ADDRESS:PORT -ewal WALLET ADDRESS -epsw x

CLaymore and settings IMG


BTW : i have 2 minning rigs ETHMINER on 5x RX580 and claymore is on 4x RX580


If that helps them im happy any questions please ask

Do you want to buy me a beer feel free !

ETH: 0xDfFEee08B98aE8309Bd89a7E398264721EDC4A4c

Yes

I have found solution !!!!!!

Im running some test now and at the beggining Clymore shows 30,8 MHs Ethminer shows 26Mhs GPUz shows 97W GPU im gona set all things up  on my 5x RX580 Nitro+ 4GB Hynix and show results here if its stable or not

Right, im not sure what im doing wrong but it seams that different bios mods copying straps from 1:1500 & 2:1500 all way to the top 1:2000 & 2:2000 setting TDP from 145W to any lower value, underclocking under volting in bios DO NOTHING to my Sapphires RX580 Nitro+ 4GB Hynix what the hell i am doing wrong now GPUz shows around 128W gpu only and i have 130MH/s on 5 gpus with beta mining Amd drivers from AMD site.

Only one thing i can see that on standard setup no underclock & undervolt im having 23mh/s per gpu and about 150W GPU referring to GPUz

How i can get 29Mh/s@110W per card.

Is there is a MUST to find best possible clock values(unique for every one of us/gpus) and voltage to get it as im expecting ?

Also in GPUz it shows that undervolting memory did not work it shows aroud 1.1v when in wattman i set 900mv

Can any one please help me to find solution?

please dont share here what speed you mining without setting clocks&voltages its useless