Help me pls with settings for RX 580 4GB and 8 GB

[G3N]

Hi,

I'm kinda new to all of this and built now 2 Mining rigs using

5x Rx580 4 GB Saphire Nitro DDR3
1x Rx580 8 GB Saphire Nitro DDR5
6x Rx580 4 GB Red Dragon DDR5

I use claymoreminer 10 and tried ot overclock/undervolt (bios) already, but only managed to get them from 19/20 Mh/s to arround 21 Mh/s(claymore10, before on claymore 9 they run at 23mh/s) and undervolting kinda worked not at all.

I wanted to ask if someone has bios settings for this cards, that I could take as advice or if I also have to do settings in claymore? In general im thankful for every help, therefore some more information.

I run on ubuntu 16.04.
atm dualmining eth/sia (maybe there is also something to improve?)
I used for bios settings a pc(windows10)
- ATIFlash
- Polaris BIOS editor
- ATI Pixel Clock Patcher

Last but not least if someone can help me to improve form 21 mh/s atleast to arround 28mh/s going ahead with same or less powerconsumption i will, as thank you, let both of my riggs run 2 days on his wallet.

Thank you in advance for your help!

Best

G3N

[0xcosmos]

first get some good bios from 1stminingrig.com
flash bios according to the memory type and brand of the gpu
second undervolt and overclock using claymore commands
use -cvddc 875 and -mcclock 2100 and ccclock -1150

[G3N]

@0xcosmos

thank you for your answer, but I cant find a bios for ddr3 nor ddr5 Memmory on 1stminingrig.com. Can you maybe give me a direkt link ( if i'm just to stupid to search )

TY

[Souran]

@0xcosmos

thank you for your answer, but I cant find a bios for ddr3 nor ddr5 Memmory on 1stminingrig.com. Can you maybe give me a direkt link ( if i'm just to stupid to search )

TY

All RX4xx and RX5xx are GDDR5
look up some tutorials or videos on how to mod and overclock/undervolt your cards, there are thousands of them everywhere.

your computer RAM might be DDR3 or DDR4, unless you are from the future, there is no such a thing as DDR5 yet

[G3N]

ok, thank you! I if I use -dmem 1 and -h 928 i get an unknow option error, any ideas?