I think your confusing K/w hours. The total powerwall can handle is 14Kw (total) single GTX1080 rig your talking about only uses 600w, that means you can multiple of those rigs. 600w isnt in one hour, that's overall.

14,000w/600w = 23~ theoretical rigs.

Its because Windows handles voltage of AMD cards more effectively. You have to use something like OhGodaTool for Linux to even get close, which HiveOS doesn't. I ran my entire farm on Windows because of the power savings with AMD. Note, It's not as bad with Nvidia cards.

Igor Labs famous for MPT and REDBIOSEDITOR just released what every miner will love! Full Decode of NAVI Memory Timings! Good luck out there and don't brick your cards! (Should work with 5500XT/5600XT series cards)

https://www.igorslab.de/en/dram-settings-en-luxe-all-gddr6-timings-for-navi-cards-immediately-free-editable-red-bios-editor-update/

It was profitable, in knowledge  

I agree, I mean even with everything to happened when I "re-vamped" my mining farm mid 2019, i would of broke even and then some right now. That was all GPUs with an electric rate of .09c/kw to 10c/kw. IMHO though the bigger you are the more profitable you will be, like you with a 4MW facility is doing very well I'm sure.

I think the "3-month ROI" comes from the huge explosion in 2017 and many people, who actually couldn't afford investing 1 year + got in. Hence the mindset was then "ROI or it's useless"

I went through this with some P106-100s I have, went through all MT timings 1 to 6. Noticed zero improvement from 1 to 6 all basically the same hashrate.

I had bought a lot of the Equipment in 2017 and 2018 when i was mining, so that was already in place and paid off by previous mining and selling during the 2018 boom, but i was fairly small only 50-75 GPUs then. RX580s and some 1070's.

Hey Guys,

So last year around this time I started a post, https://bitcointalk.org/index.php?topic=5153622.0 about starting a fairly large GPU mining farm by myself. I wanted to share today what exactly happened, did I ROI? Did I quit? Market crash took out my farms profitability? It's complex but let's start the Journey.

My mining farm
https://www.youtube.com/watch?v=NLd49pbd8WE&t=3s

Projected Revenue
https://whattomine.com/coins/151-eth-ethash?utf8=%E2%9C%93&hr=7200.0&p=19552&fee=1.0&cost=0.1&hcost=0.0&commit=Calculate

I want to start off by saying I absolutely love GPU mining and computer hardware. I'm a massive hardware tinkerer. For me Cryptocurrency mining was a fun, passionate way, to play with Graphics card, overclock, Achieve the best W/H ratio. I had come up with the plan for a 1 year(or less ROI) based off Ethereum price predictions and my ability to keep operating expenditures fairly low. I ran everything out of a garage of a house I bought on foreclosure. My friend, who was mining at the time, help setup the infrastructure to run it. He eventually wanted out and I bought his equipment. The total investment for GPUs was $20,000. Infrastructure was paid for and already in place by my previous mining in 2018. This was a consolidation and expansion.

I had a rough go of it. Some my expectations, such as using Claymore's STRAP features were not working. I had to BIOs mod the cards. However i was only achieving very low hash-rates of 27mh/s and lots of crashes/errors. It wasn't until I find the right BIOs mod that these cards came to life! I was able to achieve around 29-31Mh/s per card @ 120w per card. I did suffer some equipment failures and headaches. I had at least 2 or 3 Asrock H110 PRO BTC+ board totally die on me. Riser failures and even a few RX470's that died. The hardest part was I running everything by myself. If a miner crashed or we had a power outage I'd have to be the one to resolve it or get it back online. This wore on me a lot as I was working, trying to get out have a life, and date.

Sadly, by Dec of 2019 I decided to end my mining farm and sell everything off, including the foreclosed home. I was going to a rough break-up with a girl I was head-over heels for along with other personal issues(depression) that I just wanted to leave my city/state and pursue a new life. Everything was sold off, including the house, and i was set to leave. Obviously life events(Corona virus) have now forced me to stay where I'm living. On the positive note I did meet another girl and made some new friends, but sadly my one big passion, GPU mining is now gone.

So the question is Did I ROI?

Mining Farm Income
https://docs.google.com/spreadsheets/d/17mI2r4EJfb-VmEXN_XizkScRClhrt9CtQGm066RXsNs/edit?usp=sharing

I kept track of my income and how much ETH was sold to cover operating Expenses. In total for 2019 I mined 80 Ethereum, with 32 being sold to cover expenses. Leaving me with 48 Ethereum cleared. At present time ($245) Worth $11,760. If I sold during the last ATH of $290 in 2020, worth about $13920.

So I would have been half-way to ROI since the re-start of my mining farm. Sadly while even selling the equipment I didn't get my full investment back. The Unfortunate news for myself is that I had a NEXO Crypto-backed Loan (How I used to purchase equipment). I had put Whatever ETH I've mined into that loan to keep the LTV high enough to not get liquidated. But during the market flash crash of March 2020, all my Ethereum(Both bought and Mined a total of 170 ETH) was Liquidated to cover my loan (20,000~)

We all face failures, I'm not looking at that, But I wanted to say that by all accounts the farm would ROI by now(even with crash if I had continued to HODL Eth and keep mining), Proving that GPU mining farms can survive. The 4GB limit would of been reached this year but I would profitable by then and selling off the RX470's to ebay, then retooling to other GPUs(1660 SUPERs) or switching them to mine RVN's KAWPOW, would continued life for them.

"I have been searching online and nothing seems to work."

I am going to say I don't believe that statement. A quick google search for Bitmain S9 will lead you to Bitcoin Mining, a Search for "Can Bitmain S9 mine Zcash" will tell you "no in 3 seconds."

Example
https://www.youtube.com/watch?v=Xsmx705zn0U

Example 2
https://www.quora.com/Can-I-use-the-Antminer-S9-to-mine-for-AltCoins
"Any altcoin which uses a different algorithm, or has some other type of algorithm that must be used alongside of it, is incompatible and cannot be mined for."

Honestly, the 1660 SUPERs would have been better if you just building a decently priced rig to mine RVN. the difference between the two is nothing but the price is a big factor. I like the RX5700's But it's seems the same AMD stuff, only good for Eth-hash, well now maybe KAWPOW after teamred did there miner 7.1 it's getting much better hashrates. Ideally you'd want to compare RTX2060's to RX5700's they're in about the same price range. 1660ti's are all but basically dead.

Thanks I have a R9 FURY doing 160w @ 18mh/s (850 core/850mv/500mem) (220w at wall on Octominer riseless mobo).

Have you tried unlocking your Nano for extra shaders? I tried mine but it wasn't able to unlock at all.

Can you share your overclock settings to get 16mh/s @ 120w?

Hey, all

So i purchased a couple Octominer 8-GPU mining motherboard/cases for my friend who wants to get into mining. I figure using some RTX2060/2070/2080's would be no problem. However after receiving the units, it turns out these motherboard do not seem to support the latest Nvidia GPUs(for whatever reason?). Whenever HiveOS or Has8her OS is loaded GPU is there but not working/detected. I've exhausted all other options. Only found one thread on another person trying 1660's with no luck on these units.

Wondering if anyone out there has an updated BIOs for these? Trying to use the Octominer Web contacting support just sits there and spins after I hit the submit button.

RTX 2070 (Non Super) Achieve about 18Mhs~ @ 140w (80% power).

Hello all,

This is purely a reach out to the GPU community as a whole and my own personal experience and opinions.

https://medium.com/@infantry1337/my-stance-on-ethereum-progpow-and-the-asic-question-99310d192fb4?source=friends_link&sk=caa693854579225fa90b5e98faa3d77f

I said the same thing to you in r/GPU mining... didn't want to listen.

try -GT 151 -openclLocalWork 64 or 128 -openclGlobalMultiplier 4096 in PheonixMiner for 65+ mh/s. It's not fully stable but fun to see!

Try one of the BIOs listed here. It doesn't matter that is Gigabyte or not as long as it P104. I suggest using HIVEOS to flash your cards as well.

I have about 200 GPUs and earn about 1K(at current prices) a month after electric mining Ethereum. Im hoping ProgPoW will kick off all the ASIC and we'll see a decent return to GPU mining again.

Your going to use more power so just be careful. Other than that not much. Also that BIOs MAY not work, I had to try a varation of BIOs on my P104s to find ones that unlocked it.