Lunga Chung: I was following the numbers in this post: https://www.reddit.com/r/EtherMining/comments/8m3yre/guide_overclocking_and_problem_solving_for_amd_rx/ There is a section that says [special: Micron memory].

These are the settings where all cards except for the 2 cards were 32mh/s and the two cards GPU 2 and GPU 4 were 0.000:
1200mhz / 850mV
2200mhz / 850mV
PowerLimit -30

Then it hit me, I am probably not supplying enough power for these settings. So I changed PowerLimit to 0, and upped to 900mV for both CPU core and memory, still no luck. Powerlimit is still a bit of a mystery to me if someone can explain. Does it cap off the amount of power that can be sent to the card? Doesn't make much sense to me because if 850mV is specified, then wont 850mV be used regardless of power limit?

hustleman: is it common to have 2 cards out of a batch of 8 of the same cards that will not work with the same overclock settings? I believe everytime I restart the computer or adjust the overclock/settings it isn't always the same 2 cardsd that give me probably. It is different 2 cards.

I would like to come up with a game plan to safely find the best sweet spot for all 8 cards. Not sure if I should start with my working settings 1150mhz/850mV and 2050mhz/850mV and slowly increase, or if I should start with the cards max default settings and slowly decrease. In overdriveNT I DISABLE all the GPU’s states except the last one (P7) where I enter the values and additionally for memory I disable all of the states except for the last one where I enter the values.

I know something is wrong when I see the two cards with 0.000, try to close Claymore and all of Windows freezes usually involving a restart. I am assuming this is normal when it comes to overclocking/undervolting if something is incorrect.

My rig consists of 8 - RX 580 MSI Armor OC 8GB w/ Micron memory.

I have gotten it to run extremely steady with the following settings:

GPU Core:
1150mhz / 850mV

Memory:
2050mhz / 850mV

Powerlimit: -30

I am getting a steady 246 mh/s at about 700w. The rig's total is about 1030w.

Does anyone have any suggestions on how I can squeeze a bit more out of these cards where it would be worth the extra power? I started exploring this and everytime I try to overclock strange things are happening. All of the GPUs except for 2 of them run at 32mh/s and the 2 are showing 0.000 mh/s. When I close the miner Windows crashes sometimes so I need to restart the PC and all card overclock settings are usually set back to default again after the restart. I can confirm my risers are working fine and are being powered properly.

I am still a bit confused as to what the difference between setting the voltage and the powerlimit is.

I was able to get the rig running smoothly with higher GPU Core and Memory values and the default 950mV for both the GPU clock and memory.  Additionally, I set Powerlimit back to 0. I was hitting a total of 261mh/s with no memory errors. However the total rig wattage ended up being 1650w. This is way too much power for my liking.

I am using Overdrive NT as an overclocking tool.

I am using Claymore Dual Miner to mine both Etherium and Decred. I am currently using Ethermine for my Etherium pool and coinmine.pl for my Decred pool. I see that coinmine's reward system is PPLNS (Pay Per Last N Shares). I am aware of what this is and I am willing to gamble a bit. I am in the US and see that coinmine has a North America stratum which is a large reason why I chose them. I have a rig that is steadily running at 246mh/s for Etherium and 7389mh/s for Decred. I heard that it is best to join a large pool if you are new to this whole thing, not sure how large coinmine.pl is in the grand scheme of things.

Can anyone make any recommendations on what kind of pool I should be joining to mine Decred? Additionally, if Ethermine isn't a smart choice for an eth pool, recommendations on this would be great as well.