No, I have no errors.
Now two days working without any problem :-)
https://1drv.ms/i/s!ArSvoXaDMgNgbnaMwOBIqwwTAH8
https://1drv.ms/f/s!ArSvoXaDMgNgcESjij-11dJFjPg    - this one is with Statistic in Claymore you can see there that there are no errors.

Hi everyone,

I have finally succeed in making my SAPPHIRE NITRO+ Radeon™ RX 580 8GD5 Special Edition with SAMSUNG memory to work as they should, making 30.700 – 30.900Mh/s
As I said earlier, this is all new to me, only 10 days in business. I believe that somebody who is pro would make even more Mh/s, but this is for now enough Mh/s for me :-)
I would like to share with you everything I had to do to manage this hash rate and hopefully help somebody who is newbie like me.
I will start from scratch!
IMPORTANT: everything is done on one card, then pull out that one and put the other one in the PCIe slot.

1.   First I had put bios switch on the graphic card in position for flashing, how that is done you can find here https://www.youtube.com/watch?v=FT9K8DqaeDs
2.   Then, I have checked which kind of memory do I have on my RX580 with this tool : https://www.techpowerup.com/download/techpowerup-gpu-z/  (GPU-Z)
3.   I have downloaded latest Crimson driver from here: http://support.amd.com/en-us/kb-articles/Pages/Radeon-Software-Crimson-ReLive-Edition-Beta-for-[Suspicious link removed]pute-Release-Notes.aspx    You should only unpack driver, without starting setup. In Device Manager on your display adapter right click on your graphic card and select Update driver/Browse my computer for driver software – and navigate to folder where you unpacked your driver.  When you put the other card after the first one – windows would install the same driver – you don’t need to go thru this process again.
4.   Run atikmdag-patcher  https://www.monitortests.com/forum/Thread-AMD-ATI-Pixel-Clock-Patcher  Here is where you can download and see the manual.
5.   Run ATI Winflash https://www.techpowerup.com/download/ati-winflash/   THIS IS THE MOST IMPORTANT STEP. Click SAVE to save your original rom!!!
6.   Run Polaris Bios Editor https://github.com/jaschaknack/PolarisBiosEditor  Open yours saved original rom. In the straps section copy 1:1750 strap on to 1:2000 strap. Also copy 2:1750 strap on to 2:2000 and 2:2250. I am not sure if you need to copy all these like this – but it worked for me. Save as modified rom file!!!
7.   Run ATI Winflash again click load and navigate to your modified rom and click Program. It took less than minute to program. When pops up to restart computer – restart it.
8.   Run MSI Afterburner – I have only changed Memory Clock to 2250MHz ( crashes when is more then that ) and set it up to start with Windows
9.   Run your miner. I am using Claymore https://github.com/nanopool/Claymore-Dual-Miner/releases

You can see here how my rig works and settings for Afterburner https://1drv.ms/f/s!ArSvoXaDMgNgbRF91Bsilby9zVg

OK, after setting every card individually you should set up now all to work together. First put two, then put the third card, fourth... and so on. After putting every card I have waited a while for Windows to run drivers ( you can see in processes when he is finished), and started my Claymore miner. Maybe you can set up whole six at once but, as I said, this is the way it worked for me. And that would be all for setting up your cards.

Recommendation would be to set up Windows not to update your drivers and not to update Windows at all. I have Windows 10 Pro, and I modified update behavior:

How to prevent windows to update drivers: http://www.itprotoday.com/windows-server/stop-automatic-driver-updates-windows-10

How to prevent windows system updates: https://www.windowscentral.com/how-stop-updates-installing-automatically-windows-10


If somebody thought everything went smoothly – hate to tell you – it was a real hell :-)
What went wrong:

1.   I had 2 bad extenders for graphic cards – one of them melted and made a lot off smoke. Never panic, always be near power plug so you can react fast on these occasions.
2.   Making two PSUs to work together also was a challenge. It was smoking again – not sure why, but it did burned one power extension for sata. I was using adapter like this one but with 5 connectors : http://www.thermaltake.com/Power_Supply/Accessories_/PSU_Cable/C_00002406/Dual_PSU_24Pin_Adapter_Cable/design.htm   
I have two EVGA PSU’s: EVGA SuperNOVA 1000 G3, 80 Plus Gold 1000W     and     EVGA 750 GQ, 80+ GOLD 750W  . I had problems to boot with them until I have changed order of attaching them on power cable extender. My extender has 5 connections, so it didn’t work until I have put EVGA 1000W on first – primary connection and EVGA 750W on the second one.
3.   Also, I had problem after setting up the fifth card - I couldn’t set up the sixth one. Windows recognized the whole six cards but miner was crashing. I have only 4GB of memory and that was the problem – you should set up page file on 16GB. Control Panel/System/Advanced System Settings , Tab Advanced, under Performance click on Settings, Advanced tab and under Virtual memory click on Change. Untick Automatically manage... and select Custom size. Also I have changed in BIOS settings for PCIe to use Gen2, and Multi core enhancement as in  video : https://www.youtube.com/watch?v=X9HMKsZJEyk    But I think setting up page file is enough
4.   Also what I needed to use was DDU http://www.guru3d.com/files-get/display-driver-uninstaller-download,1.html  to uninstall display drivers when installed the wrong one.


That is pretty everything. Except suggestion to change behavior for PSUs on power loss : https://www.youtube.com/watch?v=2Y442wSnEoY – restore on ac/power loss  = power on

and to put in Windows startup your miner: to copy miner in the startup in the run box type shell:startup and startup folder will pop up, just copy shortcut of your miner there.


Hope this will help someone :-) Thank you all for trying to help me and sorry for my English...

Thanks a lot! I will try as soon as possible. My "non crypto currency" life is consuming me a lots of time :-)
Also I have one more problem, Win10 recognizes 6 cards, but Claymore is crushing when more than 5 cards. It's a known problem with Asrock MB, but I have no time to play with it. As soon as I fix all the issues (hopefully) I will write here every step of the way how I did it - I don't want anyone to go thru this hell like me :-))))))

There is no rom for my cards on https://anorak.tech/c/downloads/sapphire I tried looking there already - that is my actual problem - no rom for Sapphire RX580 Nitro + Special Edition 8Gb with SAMSUNG memory. I am using Polaris Bios Editor :-)

Hi, thanks for taking interest :-)

PSU is EVGA 750W GOLD. I have no stability issues. Memory and core settings shows the way I have set them (1152 Core and 2250 Memory Clock)
But, maybe you misunderstood me, because I have only tried to put this 777000000000000022AA1C00B56A6D46C0551017BE8E060C006AE6000C081420EA8900AB0300000 01B162C31C0313F17  to 2: 1750 2: 2000 and 2: 2500 and after that I was just trying to do things in Afterburner with no change in Mh/s
As I said I am complete starter (whole 4 days in this) so I am afraid to try any timings on my own. Should I try to copy 1:1750 to 2: 1750 2: 2000 and 2: 2500
or something else. I didn't saw any suggestions for my card Sapphire RX580 Nitro + Special Edition 8Gb with SAMSUNG memory. I have only saw some suggestions and rom for this card with Hynix memory. And for all I read settings for Hynix memory card are completely different than the one for Samsung memory cards.

Any suggestions for straps I could try?

Hello everyone,

I am totally newbie for all of  this. I have the Sapphire RX580 Nitro + Special Edition 8Gb SAMSUNG memory cards. I have the Win10 OS, I have put the BIOS plug on the card in position for flashing (also saved the original ROM), installed Win10-64Bit-Crimson-ReLive-Beta-Blockchain-Vorkloads-Aug23 drivers, used the atikmdag-patcher and in the MSI Afterburner set: CoreVoltage -162, LImit -20 Power, Core Clock 1152, Memories Clock 2250 and with these settings I get only 27.4Mh / s per card (now I have three cards).

Anyway, I tried to flash bios with some suggested straps, like putting this: 777000000000000022AA1C00B56A6D46C0551017BE8E060C006AE6000C081420EA8900AB0300000 01B162C31C0313F17
to 2: 1750 2: 2000 and 2: 2500 - but there is no change in Mh /s. Which  ever I have tried, it's always 27.4Mh /s ! (of course, there were some fallss in the attempts to use different drivers, not using afterburner ... and all the other things you can imagine someone new would try to do)

I've read that my cards should have at least 30Mh / s. Can someone help me?

Thanks in advance!