msi r9 390 gaming hashrate very low

[michix123]

Hello,

I have the problem with my Msi R9 390 Gaming 8GB card with Windows 10, that I just can't get a reasonable hashrate with Ethereum, I just can't get over 15Mh, others with the card get 27Mh, I just don't know what else must lie.

Driver version 15.12 is installed and there was no difference to 20.9.2 Same hashrate.
With Msi Afterburner there was no improvement either (mV-100, power limit -25, core clock 800, memory clock 1500) or (power limit +50, core clock 1120, memory clock 1250)
It is the standard bios on it.

I already have all miner tested, Awesomeminer (Profit Switching), Claymores Dual Ethereum AMD + NVIDIA GPU Miner v15.0, PhoenixMiner, Ethminer, Lolminer MultiPoolMiner-3.5.5.1 etc. ...

Here are the benchmarks

https://s12.directupload.net/images/201106/k9ms4l9r.png

https://s12.directupload.net/images/201106/5pn2lu3f.png

With Claymore's Dual Miner, I only get 11 Mh.

Does anyone of you have any idea why that could be?

Kind regards

[1714921595]

1714921595

[1714921595]

1714921595

[sakmsb]

This is a very basic step but we tend to miss.

Is that card in Compute mode in AMD drivers?

[michix123]

yes she its in compute mode

But what is strange, if I run it in the benchmark in the dual miner, it comes to 31 Mh, only when it is supposed to mine properly it only manages 15

[VasilyS]

You have big hashrate (about 30 mh/s) on Windows on R9 290/390 only while mining on low DAG-epochs. If you wish to have 30 mh/s on Ethereum/Ethereum Classic now, you have to switch on Linux. There is an article about it: https://www.cryptoprofi.info/?p=3313

[michix123]

many thanks. I've heard half the internet but haven't found it.

I will test it and then answer again.

really great guide!

Sincerely yours