No, trying to be an internet professor is dumb.





https://bitcointalk.org/index.php?topic=1991180.0

The AntRouter is only 1.3 MH/s. It's a waste of money and time to try and solo mine LTC. Running 24/7, at the current difficulty your great-grandkids will have great-grandkids before it will find a block. Put it on a pool and enjoy your 0.04 LTC a year, if you're lucky.


https://www.coinwarz.com/calculators/litecoin-mining-calculator/?h=1300&p=4&pc=0.10&pf=2&d=5671972.48634232&r=25.00000000&er=0.01967900&btcer=8121.27000000&hc=0.00

Did some more research on the right way to configure a dual PSU setup. This Biostar 12 GPU dual PSU mining setup guide states:

http://www.biostar.com.tw/app/kr/event/crypto_mining/page4_2.htm




Given Biostar makes mining motherboards, USB riser kits, GPU's and they also have a financial incentive not to warranty thiose products, I believe they have an objective view on how to setup dual power supplies correctly. So I accept powering the riser and GPU with the same PSU is the correct way.

I just rewired the risers and cards on my rigs so that the riser and VGA power connector on the cards are on the same PSU. The power consumptin from both type of setups is the same. The same Biostar mining guide also says you should only use a max of 2 risers per PSU power cable.




On a side note I want to say that I ran my dual and triple PSU rigs with all the risers connected to PSU that powers the motherboard and the secondary PSU only powering the VGA 6/8 pin power under a heavy dual mining load 24/7 for almost a year and nothing bad came from it and my rigs are very stable.

The voltage regulator on a V006/008 riser is there to stabilize the line and prevent spikes, not generate 3.3V. Why would the traces of the USB connector where the 3.3V is passed from the motherboard on the V006/008 risers be connected to the pins leading to the PCI-E slot on the riser if the riser created it's own 3.3V?

https://en.wikipedia.org/wiki/PCI_Express

Powering the riser with a different PSU as the motherboard causes the 12V line to come from one power source and the 3.3V line and the grounds on the riser x16 PCI-E slot to come from mixed power sources, which is the problem. Sorry, but anyone that says it's safe to power four risers off of one molex strand, clearly doesn't know what they are talking about when it comes to mining.

I didn't say the riser is pulling 12V from the motherboard, that's not the point. As I showed, it's the fact that the riser IS sharing an electrical connection with the motherboard and all electrical connections to the motherboard must come from the same power source to avoid conflicts in regulating the voltages from having different power sources. PSU's also supply 3.3V to the motherboard directly. There is no need for the motherboard to create it.

There IS an electrical connection from the motherboard to the riser, period. An 'electrical engineer' that says otherwise is an idiot. As I said, if you measure the outer pins of the USB connector coming from the motherboard PCI-E slot connector with a multimeter while the motherboard is on you will see there is 3.3V coming from the motherboard PCI-E slot through the USB cable to the riser. If you plug in the USB cable coming from the x1 riser connector to the riser and measure the voltage on the two pins on the bottom of the riser circled in yellow, you will see this 3.3V IS passed to the riser. If you look at the traces on the bottom of a Version 006/008 riser you will see the traces from the supplemental power connector and the traces from the USB connector are connected, which is why you should only power the risers with the same PSU connected to the motherboard, so the voltages can be regulated according to a single source. As the PCI-E specification clearly states, the power source to the x16 PCI-E slot DOES NOT have to be on the same rail as the power source to the 6/8 pins connector on the card.



How much power is drawn from the PCI-E slot depends on how the card is configured by the manufacturer, not how you set up your PSU's. A card mining WILL pull between 35-55 W through the riser, depending on how it's configured and how much power is needed. Dual mining also causes more power to be pulled from the riser.

In a multiple PSU setup the reason you want to connect the risers to the the same PSU as the motherboard is because all devices connected to the motherboard MUST share the same power source and ground so the voltage can be regulated according to a single source.

https://bitcointalk.org/index.php?topic=1843586.msg18351224#msg18351224

The problem with powering more than two risers per molex strand is 18 AWG wire is only rated for 10 A max for single core wire, which is 120 W at 12 V and much less for multi stand wire. Using more than two risers per PSU cable strand WILL exceed the rating of 18 AWG wire, causing the wire to heat up and is dangerous.

https://www.engineeringtoolbox.com/wire-gauges-d_419.html

The PCI-E specification says the power to the x16 PCI-E slot can come from the same or a different rail in the power supply. Implying the power from the x16 slot is NOT shared with the power to the VGA supplemental 6/8-Pin power connectors, which is also why you can use a different PSU that's connected to the motherboard to power the risers, so they share the same ground as the motherboard. The power on the 6/8-Pin connectors on the card IS shared, which is why they MUST come from the same rail on the PSU. These posts also explain why you should power the risers with the same PSU that powers the motherboard.

https://bitcointalk.org/index.php?topic=1951414.msg19383499#msg19383499

The motherboard shares 3.3V and a ground with the riser, which is why you should power the riser with the same PSU that powers the rest of the motherboard. If you measure the outer pins of the riser USB connector coming from the motherboard PCI-E slot connector with a multimeter while the motherboard is on you will see there is 3.3V coming from the motherboard PCI-E slot through the USB cable to the riser.

I agree. The PCI-E specification also clearly states the x16 PCI-E slot can be powered by a different PSU rail than the VGA 6/8-Pin aux power on the card. That's how I setup my triple and dual PSU rigs. The same PSU that powers the motherboard also powers all the risers. The other PSU's are only for the VGA power connectors on the cards. If there is more than one 6/8-PIN power connector on the card, you MUST make sure they are powered by the same PSU rail.

The Claymore ETH miner should be in /opt/miners/claymore.

Search YouTube and Google with 'how to mine XXX coin' and that should get you lots of videos and links with detailed information. Another good site to get the basics of setting up a rig is www.mining.help.

You should be able to rename the folder with the current version in the miner folder on ethOS. Then create a new folder with the same name, add the v11.2 files and run sudo chmod +x on ethdcrminer64 to make it executable.

The P104 (1070) also uses GDDR5X. These Nvidia P mining GPU's are just stripped down Pascal cards with a shitty warranty and tweaked Bios for better timings and energy efficiency, like you can do yourself with AMD Polaris cards.

You can also hit the keyboard key for the GPU index number shown in the Claymore miner of the GPU you want to turn off dual mining for and it will cycle the GPU single/dual mining on or off.

I don't know where you are getting the RX 580 is a 'one trick pony' compared to the 290X. The RX 580 does better at ETH and about the same on the other algorithms you mention. It also does it at half the power consumption.

RX 580 4GB Neoscrypt ~970 KH/s:



RX 580 4GB Equihash ~333 H/s:



RX 580 4GB Cryptonight ~935 H/s:

Yes. For RX 570's, XVG is 1 cent profit per day after the incresed power and that isn't counting that you get much less from pools than what the calculator shows.

http://whattomine.com/coins/220-xvg-blake-2s?utf8=%E2%9C%93&hr=1100.0&p=40.0&fee=3.0&cost=0.12&hcost=0.0&commit=Calculate

I'm mining SmartCash. It's the only dual mining option that's still profitable, though not by much.

http://whattomine.com/coins/197-smart-keccak?utf8=%E2%9C%93&hr=140.0&d_enabled=true&d=270280.988&p=40&fee=3.0&er_enabled=true&er=0.00001900&cost=0.12&hcost=0.0&commit=Calculate

I have the same amount of ETH incorrect shares dual mining with v11.4 as before over two rigs, at most 1 or 2 per 1000 shares on Nanopool. If you're getting more incorrect shares with v11.4, if probably means your settings were too high to begin with or a Bios mod with too aggressive timings. Use HwInfo to check for memory errors and adjust the memory clock down by 50 MHz until there are no more errors.