With as many breakers as you have, it shouldn't be a problem to run 3 rigs across different breakers. To find out exactly which outlets are controlled by each breaker just flip the breaker off and plug in a lamp around the different outlets to determine which outlets are controlled by that breaker. Do that for all the outlets that you plan to use for rigs. Then spread the rigs across different breakers to keep the TOTAL draw of all the outlets on that breaker to less than 80% MAX, so for a 15A circuit no more than 1300W TOTAL.

The reason most household 15A sockets heat up is because they are cheap and not meant to carry a continous high amp draw, even if the wiring is the correct gauge for the load. Replacing the socket with a higher amp socket solves the problem. It obviously dosen't change the capacity of the circuit though, so if it's 15A circuit, putting a 20A socket won't change that. If you have aluminum wiring, then you also need a socket that's compatible with that as most sockets are made for standard copper wiring.

Most household 120V 15A wall sockets will get very warm when pulling over 1000W continously. Replacing the wall sockets with 20A sockets keeps them from heating up.

http://www.homedepot.com/p/Leviton-20-Amp-Commercial-Duplex-Power-Outlet-White-R62-CBR20-00W/202066702

The PCI-E detection feature shows you if a GPU isn't being detected by a PCI-E slot, so you can check if it's a loose connection or a bad riser. It's unlikely the mothorboard is causing the GPU to crash. It's more likely it could be a bad riser or USB cable.

The PCI-E slots are too close together on the ASRock H110 Pro BTC+ motherboard. Make sure the prongs on the back of the x1 PCI-E connector from the riser is not touching the USB connector on the riser connector next to it. It will cause a short and cause the GPU not to be detected. I put two pieces of electrical tape on the back of the x1 connectors to prevent it. Also make sure the x1 connector is making good contact with the x1 PCI-E slot. Sometimes risers have poorly designed connectors that can lose contact, same as the USB cables on the risers.

Just run an administrator command prompt and ping the stratum server.


Anything <100ms response is good.

Try Nvidia Profile Inspector.


https://forums.guru3d.com/threads/nvidia-inspector-introduction-and-guide.403676

The latest v1.60 Bios includes the new Spectre patch with a PCI-E slot diagnostic utility in the Bios setup, similar to the Asus B250 Mining Expert motherboard.

Try resetting the GPU's by shutting down the rig and cutting the power to the PSU with the switch on the back. Then press the power on button until the power drains from the system and then turn the rig back on.

You can try it, though limiting the GPU power consumption too much will reduce the hash rate and make it less stable. Generally for RX 580's -5-10% power limit with a 850 mV is stable for most cards.

It's a basic way to limit or increase the maximum power consumption of the card by a percentage of TDP you set. e.g. If the TDP of a card is 150W, -powlim -10 limits the TDP to 135W. For my RX 580's I use -5-15% power limit together with a 850 mV - 900 mV undervolt.

I disconnect the riser x1 connector from the motherboard and leave the GPU's connected to the PSU. If the motherboard is different, it's better to connect the drive to the motherboard you want to use.

Readme.txt:

For installing Windows just leave the GPU on the primary x16 slot or the onboard video connected. After the Windows installation is complete, along with all the updates, run DDU to remove the current driver and set Windows to not auto-install the GPU drivers. Then shutdown, connect the rest of the GPU's to the motherboard and install the latest driver. With 12 GPU's it will take a while to install the drivers (20 min.<).

To keep Windows Update from modifying your drivers, disable drivers updates in the Group Policy Editor.

Windows key+R ==> Type gpedit and hit Enter ==> Navigate to: Computer Configuration ==> Administrative Templates ==> Windows Components ==> Windows Update and set 'Do not include drivers with Windows Update' to enabled.

If the next gen Nvidia GPU's are based on the Volta architecture, I would expect higher prices due to various factors such as supply logistics and increased manufacturing costs from moving to a smaller process architecture. If that's the case the new cards will be more efficient for mining, but shouldn't make the current Polaris lineup obsolete in terms performance/hash and ROI timeframe.

Yes. You can also add any other miner options specified in the Readme.txt, like -mode 1 or the core/memory clocks in the command line. A good guide to get the basics on optimizing your cards to mine Ethereum is www.mining.help.

Like it says in the Readme.txt you can use a command line start.bat file or the config.txt configuration file to set the miner options.

If just want to mine ETH set the miner to -mode 1 in the config or .bat file, then set the pool, wallet address or worker as explained in the Readme.txt. Most pools have a 'getting started' help page with the string to add for the pool's Stratum address and port to use. For failover pools, in case the main pool goes down, add pools to the epools.txt file.

Almost all miners trigger antivirus and it's generally a false postive due to miners being used to mine on other people's computers without their consent. You can disable your antivirus before downloading a miner and create an exclusion for the folder where you keep your miners.

Afterburner doesn't work with the Crimson compute mode drivers and more than three cards. You can set the core clock/memory clock/undervolt/fan speed directly in the Claymore configuration file or create profiles using OverdriveNtool, as explained on www.mining.help.

To keep Windows Update from modifying your drivers, disable drivers updates in the Group Policy Editor.

Windows key+R ==> Type gpedit and hit Enter ==> Navigate to: Computer Configuration ==> Administrative Templates ==> Windows Components ==> Windows Update and set 'Do not include drivers with Windows Update' to enabled.

You do not need root access to run a program at startup.

1/. Login under your user account, create a text file with gedit and add:


2/. Save the file as xmr-stak_Launch.sh in the root of your home directory.

3/. Open terminal and make the script executable by your user:


4/. Open the Ubuntu Dash, search for "Startup Applications" and click on it.

5/. In the "Add Startup Application" window add:

Name: XMR-STAK
Command: Browse to the xmr-stak_Launch.sh file in the root of your home directory and click 'Add'

XMR-STAK  should now launch after your login to Ubuntu. If you want to add a delay before starting the application, open the starutp file located in:


with gedit  and add a delay to the file: