ETH hashrate decrease after modded bios

[Fr0st975]

Hi guys,

I tried to mod bios a RX 580 card with "One click timing patch" from Polaris Bios. Everything went well, So after modded the card and apply the Pixel clock patcher I rebooted and Start mining.
As you can see on the screenshot the first hashrate was at 31.5 Mh/s but it decrease quickly when I get new jobs.

https://ibb.co/ngsuZo
https://ibb.co/bHxBEo

Did I forget something?

Before modded bios My hashrate was at 27.1 stable.

I'm using Claymore 11.8 (ETH only) with beta blockchain drivers and MSI Afterburner for OC.

Thanks for your help

Fr0st975

[jmigdlc99]

That is weird. By any chance did you turn on two instances of the miner?

Also looking at your screenshot it seems like you have dual mining turned on? It says DCRI is set to 12. Usually its now a better option to focus on mining ETH alone instead of trying to dual mine some other shitcoin along with it.

[abhiseshakana]

Hi guys,

I tried to mod bios a RX 580 card with "One click timing patch" from Polaris Bios. Everything went well, So after modded the card and apply the Pixel clock patcher I rebooted and Start mining.
As you can see on the screenshot the first hashrate was at 31.5 Mh/s but it decrease quickly when I get new jobs.




Did I forget something?

Before modded bios My hashrate was at 27.1 stable.

I'm using Claymore 11.8 (ETH only) with beta blockchain drivers and MSI Afterburner for OC.

Thanks for your help

Fr0st975

Try to Disable ULPS and make sure GPU workload on Compute mode

[Fr0st975]

That is weird. By any chance did you turn on two instances of the miner?

Also looking at your screenshot it seems like you have dual mining turned on? It says DCRI is set to 12. Usually its now a better option to focus on mining ETH alone instead of trying to dual mine some other shitcoin along with it.

Its automatic with latest Claymore version even with ETH only mode.

"dcri   Decred/Siacoin/Lbry/Pascal intensity, or Ethereum fine-tuning value in ETH-only ASM mode.
If you did not specify "-dcri" option in ETH-only ASM mode, miner will detect best -dcri values automatically, you can also press "z" key to do it."

[Fr0st975]

Hi guys,

I tried to mod bios a RX 580 card with "One click timing patch" from Polaris Bios. Everything went well, So after modded the card and apply the Pixel clock patcher I rebooted and Start mining.
As you can see on the screenshot the first hashrate was at 31.5 Mh/s but it decrease quickly when I get new jobs.

https://ibb.co/ngsuZo
https://ibb.co/bHxBEo

Did I forget something?

Before modded bios My hashrate was at 27.1 stable.

I'm using Claymore 11.8 (ETH only) with beta blockchain drivers and MSI Afterburner for OC.

Thanks for your help

Fr0st975

Try to Disable ULPS and make sure GPU workload on Compute mode

 Thank you I'll look at this later, however there is no "GPU workload" option with Blockchain drivers, I guess it's already working in compute mode

[abhiseshakana]

Thank you I'll look at this later, however there is no "GPU workload" option with Blockchain drivers, I guess it's already working in compute mode

sorry, didn't see that you already used blockchain driver. I had the same issue with my HIS RX 580 three months ago, and all I did is use DDU and re-install GPU driver, disable UPLS with sapphire trixx and re-flash the bios rom on silent mode, with atiflash using command prompt and use the command "atiflash -unlockrom 0" before flashing the bios rom.
My issue has been resolved, but i don't know which exactly methods that solve the problem

[tg88]

Try this one:

-oldkernels (AMD cards only) specify "-oldkernels 1" to use old-style GPU kernels from v10, they can be more stable for hard OC and custom BIOSes.

If not, reinstall the driver.

[hiroshidw]

I believe you have too much overclock your memory, try do decrease it. Your card are Samsung Memory? 4gb or 8gb?

[Mamasita22]

Too much overclocking defo. Different modbois timings can hold different frequences. So because you use 1click, try for first round values of memory oc like 2100 or 2050 until hashrate stop decreasing. And start setting oc without adjusting powerlimit, undervolting and core clock. Your previous non-biosmodded overclock doesn't fit

[Fr0st975]

I believe you have too much overclock your memory, try do decrease it. Your card are Samsung Memory? 4gb or 8gb?

I have the 4gb version with Elpida memory.

[Fr0st975]

Thanks guys I'll try your advices!

[Fr0st975]

Hello all,

Good news, my hashrate is arround 31.5 Mh/s per card (stable) after following your advices. My total Hashrate is improved by 14,5 Mh/s.

ETH: GPU0 31.482 Mh/s, GPU 1 31.550 Mh/s, GPU2 31.551 Mh/s

Now I need to work  on the undervolting I'm at 110w per card maybe I can do better.

Thanks a lot.

Fr0st975

[damba_]

Hello all,

Good news, my hashrate is arround 31.5 Mh/s per card (stable) after following your advices. My total Hashrate is improved by 14,5 Mh/s.

ETH: GPU0 31.482 Mh/s, GPU 1 31.550 Mh/s, GPU2 31.551 Mh/s

Now I need to work  on the undervolting I'm at 110w per card maybe I can do better.

Thanks a lot.

Fr0st975

You can undervolt using OverdriveNTool or using commands -cvddc for core voltage and -mvddc for memory voltage in Claymore miner or PhoenixMiner.
Here you have good tutorial how to undervolt using OverdriveNTool https://mining.help/