Thank you for the response Lunga Chung!

When you set your core voltage to 837 do you set the same voltage for memory as well or keep it at 850?

Also, maybe I will try Phoenix Miner, it wouldn't hurt.

Metroid: Should I always keep gpu core voltage inline with memory voltage?

For example if I set GPU Core voltage to 844 and it works should memory voltage be 844 as well or keep it at 850?

Additionally, if memory at 2200 / 850 works for some of the cards without any warning messages or mem errors since they are all Micron would you suggest I keep it at that or was 2150 / 850 better?

One more thing... Here are the results when running at the following settings:

When I run:

1150 / 844
2200 / 850
I am getting 253mh/s steady (at slightly lower wattage than when using 850 which is great)

When I run:

1150 / 844
2150 / 850
I am getting 252mh/s steady (at slightly lower wattage than when using 850 which is great, but not sure if it is worth the 3mh/s sacrifice, will need to check whattomine)

When I run:

1160 / 844 (this is probably a bad idea)
2150 / 850
I am getting 253/4mh/s steady

When I run:

1170 / 850 (not sure if this will work at 844, is it worth trying, I am nervous)
2150 / 850
I am getting 255mh/s steady (I still think these are my most solid settings, even the PC restarts faster with them, if that is a thing)

When I run:

1180 / 850
2200 / 850
I am getting 258mh/s steady (but at the cost of higher wattage and risk of a gpu mh/s dropping to 0.000 crashing due to not enough voltage)

I am almost positive without a higher core set, the 2200 can't take full advantage based on the results above.
----------

PLEASE let me know your thoughts on finding the sweetspot based on the above tests if you dont mind. (taking into account that my electricity costs are .1333, which I think is on the high end)

SIDE NOTE: After increasing minfan speed to 50% the gpus all run a lot cooler and GPU 2 that was having problems is accepting shares, even at 2200 / 850 memory. Is this actually a thing or am I most likely going to get warnings again resulting in me to go back to 2140 / 850?

Metroid, I have to admit you were right. After running for 24h thinking I was in the clear, what do you know:

GPU2 not accepting any shares (zero men errors though).

I have 8 of the same exact RX580 cards..

7 of them are running fine at

1070 / 850
2150 / 850

I wonder how much I am going to have to lower the clock on GPU2 so it doesn't show that warning.

I started at 2100 / 850, when I was doing 1150 / 850 for core and was still getting the warning. But without a PC restart so maybe I had invalid results.

I guess I will lower by increments of 10, restart the PC and start the miner again until it goes away. If all the GPU models are the same I shouldn't need to lower more than 50mhz on this specific card should I?

You guys seem positive the issue has nothing to do with Core or Voltage when this warning appears with no memory errors so I will focus on Memory speed only.

Here is an update with my solution for anyone interested in this post:

In regards to "7 of 8" RX580 cards running well using:
1150mhZ / 850mv
2150mhZ / 850mv

The 1 card that was failing, not able to accept any shares, and causing this warning in Claymore:

"GPU #2 got incorrect share. If you see this warning often, make sure you did not overclock it too much!"

Solution: It simply can't run 2150mhZ / 850w without a small core boost.

It works perfect with:
1170 mhZ / 850mv
2150 mhZ / 850mv

I am now running all of my cards at 1170 / 2150 / 850mv.

There was one other card where the mh/s would drop to 0.000 after the first few minutes of running. This is usually voltage related, so I simply updated its settings to the following and it runs no problem:

Now I have 7 cards running @:
1170 mhZ / 850mv
2150 mhZ  / 850mv

1 card running @:
1170 mhZ / 851mv
2150 mhZ  / 851mv

CONCLUSION (could be extremely helpful to people using RX cards and Claymore):

1. If you are receiving the Incorrect Share error for a specific GPU without any memory errors, it is most likely because your GPU Core speed isn't high enough for your memory speed. For example (GPU: 1150 / 850mv Memory: 2050 / 850mv) might work, but (GPU: 1150 / 850mv Memory: 2150 / 850mv) might not work. So the solution is something like (GPU: 1170 / 850mv Memory: 2150 / 850mv).

2. If you are receiving the Incorrect Share error or seeing actual memory errors for a specific GPU, it is most likely because your Memory speed is too high, try lowering it.

3. If you are seeing a specific card's mh/s drop to 0.0000 and die, this is most likely a voltage issue, usually core voltage. Try adding 1-5mv to both the GPU and Memory to that specific card just like I did above. Now if more than one card is failing, then that means your speed/voltage ratios are probably way off and you need to increase/decrease items by larger amounts.

Thank you for all the info guys.

I am using MSI Armor OC RX580 Cards with Micron memory.


7 of 8 cards have been running fine on the following OC settings:

1150mhZ / 850w
2150mhZ / 850w

Each card runs at about 80w, rig total is 1060w

The one card is giving me problems, I even lowed it to 2100mhZ / 850w and still giving me the red error.

As Piskeante is saying I think if I feed it a small amount of additional voltage the errors will go away.

Additionally, Piskeante there is absolutely no way gpu mining would be even the smallest amount profitable running at those high voltages you are talking about. If my wattage goes anything higher then it is the profits get destroyed. I have seen plenty of posts out there saying 850w is a common wattage for RX580s and it has been working for me just fine, besides this one card, so I am asking how you guys recommend I go about tweaking it. I do think adding a small amount for voltage will do the trick, I am going to try that now.

I am trying to understand when using overdriveNT tool on Windows 10 when setting the voltage of GPU Core and Memory does it mean Max voltage or the exact voltage that will consistently be sent to the card.

In Claymore I am currently getting this message for one of my GPUs:

GPU #2 got incorrect share. If you see this warning often, make sure you did not overclock it too much!

GPU: 1150 / 850
Memory: 2150 / 850

Could increasing the voltage for this card fix this warning that I am getting? Or is it strictly to do with Memory mhZ or is it both?

Should I start by taking the Memory down to 2145 / 850?

Is there a scenario where increasing the GPU speed could help prevent memory warnings at 2150mhz? Or is it strictly lowering values from this point forward for that card.

Lunga Chung: I meant to ask you what a good Virtual Memory Paging min and max values are in 2019....

In the mining.help guide they say: In the “Initial size (MB)” type: 2000MB x GPU Count (12000MB for 6 GPU mining rig, 24000MB for 12 GPU). Since I have an 8GPU rig I ended up calculating 16000MB. However, this ended up being too low so I have been running on 32000. I am going to assume it is because the guide is out of date and the DAGs these days require more.

Here are my current settings:

Min 32000 (wondering if this value is too high? Does it really matter if it is too high and does it effect power usage)?
Max 64000 (this value doesn't really matter)

Lunga Chung: I think I understand everything now. One last thing I am trying to resolve:

For a while I was running on the following settings with all 8 cards:
CORE:1170 / 850
MEMORY: 2150 / 850

However, GPU4 is still going to 0.00mh/s and failing eventually.

My first instinct was to switch GPU4 settings to the following (increasing the voltage on core and memory by 10):

CORE: 1170 / 860
MEMORY: 2150 / 860

So far things seem to be working... Should I have kept the voltage and decreased the core/memory mhz instead?

Lunga Chung:


You mean to keep HW running and check at the bottom section of each GPU and make sure errors are 0, 0, 0 or at a minimum right?

Additionally, are you saying if my cards allow for 2200mhz memory I should definately do it? I feel like without the core being increased beyond 1180 it doesn't take full advantage of it though. Maybe I should slightly increase the volts on the Core and go for 1200mhZ / 870mv.

Lunga Chung: Great, so instead of 1170 / 850, you are saying to slightly increase and see if there is no crashing, something like 1175. I can guarantee that with my MSI Armor Core OC RX580 8GB cards that with 1180 / 850 and 2150 / 850 certain cards crash, not even sure if it is worth playing around with.

Does the memory make a difference at this point? I am currently on 2150 instead of 2200. I see a small increase when it is set to 2200, but only if the core is set beyond 1180 which requires more mV than 850.

Lunga Chung: I have learned a lot in the past 24 hours. I have all 8 cards running at the following settings with no problem:


GPU Core: 1170mhZ / 850mV (gpus are failing when I do 1180 / 850mV, I am curious if upping the memory to 2250mhz and running @ 1180 core would work, I am assuming no)
Memory: 2150mhZ / 850mV

Rig running 255mh/s @ 1053 watts which seems pretty solid when entering these numbers in WhatToMine versus other mhs / powerconsumption ratios.


By the way I found out my issue before with the crashing when setting the Memory to 2200, it is because I had Power Limit set to -30% which I believe overrides the voltage amounts causing certain cards to crash. Now that I have Power Limit setting set to zero for all cards I am able to easily do 2200mhZ / 850mV memory.


At this point I think I am going to keep the memory settings exactly where they are. I noticed it is all about slightly adjusting the GPU Core which will increase megahases but also increase wattage if I feed it a few more volts, for example: 1200 / 870mV did not seem profitable on WhatToMine as it brought my entire rig to 1130 watts.


Since my rig is currently running 255mh/s @ 1053 watts using GPU Core: 1170mhZ / 850mV, I am a bit nervous to lower the volts even further based on your last post.


Isn't 1180mhz / 837mV a bit dangerous for the card? I am sure it will be extremely profitable if it works. I was told you shouldn't go beyond 1180mhz @ 850mV in your other post, is this true?

I am seeing 648 WATTS for all 8 cards, the remainder is my Motherboard, CPU, RAM, SSD etc... I am using the typical celeron processor, 8GB ram, Asus B250 Mining Expert, kingston 120GB SSD.. I am wondering if it is the 7 fans I am running on the frame, maybe they are running too high, or it could be the tt setting in Claymore that I am running.

Here are my start.bat settings: -epsw x -mode 1 -mport 0 -rxboost 1 -tt 70 -ttli 75 -tstop 85 -wd 0

Not sure why my wattage is in the thousands and you are able to get yours down in the 900's. Let me know if you think there is anything better I can do. Thank you!

I would like to know which of these problems is normal and which of them could possibly be resolved based on peoples experiences.

Here are the exact steps I follow:

I installed Windows and got it fully up to date about 2 weeks ago, then disabled automatic updates. Following everything from the guide @ mining.help.

I am using an Asus B250 Mining Expert motherboard (I believe all recommended bios settings are set).

With only a single card plugged, windows loads extremely fast. I installed the absolute latest AMD graphics drivers for the RX580 (https://www.amd.com/en/support/graphics/radeon-500-series/radeon-rx-500-series/radeon-rx-580). The driver release date is 7/25/2019.

I restarted the computer, powered down the computer, plugged in the remaining 7 cards, turn on the computer. I see the Asus bios screen, then it goes to a blank screen with just a white spinner at the bottom which freezes. Had to manually power down the PC using the power button, then finally that screen with the white spinner did not freeze and I got to the login screen.

Once the desktop was loaded I set all 8 cards to Compute mode under Global Settings. The settings actually stick which is good, I checked several times.

However, with this setup in place (no overclock settings set yet), when I restart the machine it does one of several things:

1. Takes a long time to get to the login screen. I see the asus screen, then a black screen with a white spinner, eventually gets to the login screen. I assume this is normal behavior and it takes so long due to there being 8 graphics cards.
2. Takes a long time to get to the login screen. I see the asus screen, then a black screen with a frozen white spinner, usually ends up in me doing a manual power down and power on, then eventually loads Windows just like Step 1 above.

On a side note, I have a monitor plugged into the integrated HDMI port for the motherboard.

With all of this craziness going on, things are still manageable. It is almost as if I want to restart the PC as little as possible. However, when playing with overclock settings I believe restarting is required as part of the process, especially if you make a mistake and things freeze. I also noticed sometimes when changing settings in OverdriveNT and then starting the Claymore miner the hash rates aren't effected. However, after a restart then I see the overclocked hashrates. This seems strange since I don't think most people need to restart to see the OverdriveNT settings take effect.

I have a weird feeling all of this has to do with me being on a very recent version of windows 10 and a very recent version of the AMD drivers.

Can some experienced people who use Windows 10 rigs share some of their similar experiences so I can gauge what is normal and what is not? I am about to switch to Linux.

Piskeante: Thank you for the in depth post. I am a bit confused when you say 1mv? By this to you mean 1000mv? Can you try to explain one more time the exact steps I should take to get each of the 8 cards to a stable overclock state. Additionally, I would like to find the perfect power usage/hashrate balance. I am aware I could probably get 32mh/s per card but for another 200 watts I don't think it would be worth it profit wise.

I am currently getting 246mh/s and some change running the entire rig at 1037 watts. Each card is in the 30's and some change.

Is it worth trying to get any better than this? I feel like if I do the voltage will need to be increased from 850 and it will cause the wattage to increase wouldn't make it worth it. Let me know your thoughts. Thank you!

Swogerino thank you, this is exactly the type of setting I was looking for. So the command line will never close and I will be able to scroll up and see which card was having problems?

So the Silicon lottery thing is real, got it. I have been using overdriveNT for overclocking. Thank you for the help!!!

Thank you for the advice, on a side note the rig actually went about 1.5-2 days with no problem, then the restart happened. Is it common for a rig with all of the exact same video cards to have a card that needs settings of its own? I am going to try exactly what you said increasing the voltage to 900W on all cards and slowly lower as time goes on. Can I adjust while Claymore is actively running? I am convinced the issue has to do with the overclock/undervolt settings just because when Wattman gets restored it usually means there was a memory error of some sort. I have played around with overclock/undervolt in the past and all of the combinations I tried caused crashes, but I was able to witness them within seconds/minutes. On a side note one of the 2 power supplies is hot once in a while which doesn't make much sends since I am only using about half the load on each of them, I am hoping it has nothing to do with a faulty PSU or as you were saying a power issue (which I highly doubt because Wattman settings were restored to defaults, which usually means there was a gpu memory error of some sort).

After running my rig for about 24 hours straight, it is crashing and automatically restarting. As soon as I get to the desktop I see the message that Wattman settings were restored to defaults (I am aware this usually means something went wrong with one of the cards). I checked the Claymore logs and the entire bottom of the txt file is filled with <0x00> so there is no useful information from when things crashed. If anyone can give me some ideas on how to pinpoint what is going on the next time this happens that would be great.

Every time I check all GPUs during mining are 70 degrees or less and everything appears to be running smooth @ 246 mh/s and 1037 watts.

I basically followed the entire https://mining.help/ guide to set this rig up.

Rig specs:
OS: Windows 10 (running the commands to clean it up for mining)
GPUs: 8 - MSI Armor OC RX580's
Motherboard: Asus b250 Mining Expert (made sure I configured the bios property, setting Gen2 for PCIe)
1200 watt power supply plugged into EATX Power A (to power the main system, and 4 gpus)
1200 watt power supply plugged into EATX Power B (to power the remaining 4 gpus)
I have risers plugged into ports: A01, A02, A03, A04, B07, B08, B09, B010

All cards are using a modded vBios that I created using Polaris BIOS editor (pimp my straps option).

All cards are using the following overclock settings (maybe this could potentially be the issue, but they run so smooth for such a long time so I feel like these OC settings are safe):

Micron Memory:
gpu core: 1150mhz / 850mV
memory: 2050mhz / 850mV

I am running Claymore 14.7 to mine Etherium using Ethermine as the pool with the following settings:

I made sure to set the following environment variables:
setx GPU_FORCE_64BIT_PTR 0
setx GPU_MAX_HEAP_SIZE 100
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_SINGLE_ALLOC_PERCENT 100

Here are the additional settings in my start.bat (excluding my wallet info)
-mode 1 -mport 0 -rxboost 1 -tt 70 -ttli 75 -tstop 85

My rig consists of 8 AMD RX580's. When running Claymore Dual 14.7 I am using Ethermine pool and getting a steady 246m/hs across all 8 cards. I have been running this for a few days. I figured it wouldn't hurt to give NiceHash a try. I created an account at new.nicehash.com and downloaded the latest software, added wallet address, ran the bechmarks, started it up. It instantly opened Claymore 14.7 I am assuming this is because I have 8 RX580's and that is the most profitable thing to do. I am getting 237m/hs (29 per card) instead of the 246mh/s that I get without NiceHash. I attempted to add extra launch options like -rxboost in the settings, but still didn't get me to my normal mh/s.

Regardless here is my main question:

Mining etherium directly using Claymore 14.7 @ 246 m/hs on Ethermine pool

VS

NiceHash mining Etherium for them in Claymore 14.7 @ 237m/hs on whatever pool they use and getting paid out in Bitcoin


NiceHash is predicting I am going to make anywhere between 2.50 and 4.50 every 24/hr (the number keeps fluctuating). I entered my electricity costs which are 0.1333/hwh, so I am assuming it is even more accurate. However, something seems waaaayy too good to be true about these numbers. That could potentially mean more than $100 a month in pure profit after electrical costs. Is there something NiceHash does that I am not accounting for that could potentially make it more profitable then mining Etherium directly on Ethermine pool.

I am sure a lot of people on this forum have tried both and can give me some good information here. Anything would be greatly appreciated.

Lunga Chung, awesome that is what I will do. What is the difference between -rxboost 1 and increasing the number like you are saying? Additionally, can you explain powerlimit?

Lunga Chung, thank you for confirming all of those things. This is the main guide I used to setup my rig on windows. As you can see the writer of the guide references RX580 w/ Micron memory which is where I got my initial settings that have been working steady. I have been using overdriveNT for overclocking.

GPU Core:
1150mhz / 850mV

Memory:
2050mhz / 850mV

I just feel like there has to be a way to squeeze between 31-32mh/s out of each card. Maybe I should try what you are mentioning: 1180 / 2150 both at 850mV still.