Low hash rate with 2 RX580's

[miningchamp93]

Hi all. I just set up a couple GPU's in my PC (figured I'd start small before jump into a 6 GPU mining rig, and you can't find cards anywhere). Right now I'm pulling 45ish Mh/s, but after researching I feel like I should be able to get 55-60. I've already done the bios mod (changing the memory timin I believe). I followed a couple guides, yet when I down clock my core clock, and increase my memory clock I only get 11 Mh/s per card. I'm not sure what steps I'm doing wrong. Any help would be greatly appreciated!

ETA: sorry, forgot to add some info. I'm trying to dual mine using Claymore (latest version) ethereum and siacoin (my siacoin hashrate is 1400 Mh/s, don't know if this is good or not). I'm on 17.4.4 AMD drivers. I'm pool mining on Nanopool. And the cards are both PowerColor RX 580's. One is a Red Devil and the other is a Red Dragon.

https://miningchamp.com/gpus/91/Sapphire-RX-580-Nitro+-8GB-hashrate

[RudysoRudy]

looks like i am having a the same issue. I have 3 rx 580 8GB cards one hashing at 27.5 and the other two at 22.5. when i try and overclock them i get no result but if i raise the memory clock high enough my mining rig crashes. i also have gtx 1060s 6GB and i can get up to 23.5 just fine. i can use the MSI after burner to raise the hash rate but i can not do that for my AMD cards.


if anyone has a solution

please advise

thank you   

[swogerino]

looks like i am having a the same issue. I have 3 rx 580 8GB cards one hashing at 27.5 and the other two at 22.5. when i try and overclock them i get no result but if i raise the memory clock high enough my mining rig crashes. i also have gtx 1060s 6GB and i can get up to 23.5 just fine. i can use the MSI after burner to raise the hash rate but i can not do that for my AMD cards.


if anyone has a solution

please advise

thank you   

It depends on the driver you are using for MSI Afterburner to recognise the cards. For example the latest version 4.5.0 of MSI can recognise the latest Adrenaline driver and also the Blockchain driver differently from previous versions which cannot recognise both. Check which driver are you using and if you see Adrenaline and not Crimson Beta make sure to
1. Right click on empty space on desktop
2. Choose AMD settings
3. Global Game settings
4. Make sure you change from Gpu workload graphics to Gpu workload compute.

Also remodify the bios if you haven't already done so.

[superdax]

revert back windows update. sometimes new update make the gpu low hashrate.