Topic: I Bought 150+ GPUs for Ethereum mining. Think I'm Insane? - page 2. (Read 2711 times)

For sure they would realize that they had done the biggest mistake and $53 for a 470? Its a sweet deal.150+ GPU's for eth mining with current difficulty+ energy cost would result out to non-profitability or longer ROI but paying off on what you had invested is always be reachable.

Interesting regarding SRBBioseditor i found that his straps for hynix a way tighter and more unstable the PBE (elpida is more the same). But with his straps xfx 570 4gb hynix i can barely go over 1980 and get like 29,9 (and seriously unstable) on PBE i can get to 2015 w/o errors and reach 30,4mhs

Seems insane to me to start up mining with POS just around the corner. I sold my rigs a few months ago and that was long past when I probably should have. In fact, though I made a nice amount for the investment and it was fun to do, I probably would have been better off putting the cash I used for making the miners into just straight up purchasing eth and btc.

https://bitcointalk.org/index.php?ac

You cannot make mistakes when mining is not worth the time, anybody that has no ability to work around and make their miners efficient then they will not survive in times like this, by downvolting they increase their chances to stay in the game for few months more hoping profit will increase if that profit never comes then they will exit it. Times for mistake was when a gpu card like the gtx 1070 was giving 10 usd per day, now is barely giving $0.20 per day after power costs.

And you seem to be like one of those discriminating people that would kill for no money just for fun or ignorance. Sorry, i dont want to deal with people like that either. You live in a "FIRST" world country, so i understand you little peace of s... thinking. You make money, but your mentality its poorer than any of those "third world country" people.

The problem with running them at the stock voltage for the memory is power savings. Sure your cards are stable and can clock high without problems, but not all cards are the same. You could be saving 100-200w per rig and still have the same hashrate just by downclocking memory to 900mv - 950mv, some down to 860mv. That's my philosophy, the one that cannot do it will spit out errors. Well then just up the voltage higher or downclock memory. Power is mining's biggest expense/cost. More you save power the more you save money!

You picked up all these GPUs at a sweet prices, I think this is a great deal . RX470 4GBs for $53 it is generally a good investment, as they will pay off in six months or earlier. I think those who sold you these cards will regret it in a few months.

Oh rich man from rich country with 12 GPUs counting about $100 profit. With such tips i can understand why rigs are off for years. Your room-mining opinion is very important. But only for 2-5 rigs.
Big miners have several more problems then "expensive cost per kW" but they can decide it.
If you want to try to understand how it is possible - you can read this thread from right-country man
https://bitcointalksearch.org/topic/a-man-a-dream-and-a-4mw-facility-my-journey-setting-this-badboy-up-4789787

Are you sure applying different voltages have an effect ? What about power at wall ?
In my case, applying differents voltages between core and mem had no effect, the higher voltage was always applied on both. Confirmed with power at wall.
Not retested recently, i'm always applying same voltage on core and mem.

mmm....big farms react almost instantly. changing their algo can be done almost automatically with their software. There are people outthere that can switch coins with one click. Moreover, they can also tell the computer to switch to certain algos during certain times. They load profiles directly on the miner (not bios) and as soon as they load the miner, the program gets the card working.

I myself was able to switch from ETH to ETC miles away from my house when i was mining back in 2017.

Now..... i don't normally help people with issues, but i´ll give a few tips in case they can help.

the sweet spot for RX 470-570 (mines were 570's ) is:  1150 mhz on the core, 2100 mem. AFAIK 470 and 570 are almost the same card, but 570 is a bit better, to be honest.

My experience is that you should not undervolt the memory. My Sapphire RX570 nitro+ cards did crash a lot if i undervolted the memory, so i left them at 1000mv stock. 850mv on the memory...well...maybe it's ok for 2000mhz, but take into account that RX 570's nitro+ at 1750 stock mem clock had 1000mv stock.

Now, the voltage.

i have 3 RX 570's nitro+ 8gb

1º 1150/2250 831-837mv core/ 1000mv mem 31.4mh/s
2º 1150/2190 831-837mv core/ 1000mv mem 30,8mh/s
3º 1150/2125 831-837mv core/ 1000mv mem 30,3mh/s

They were stable for months at this settings. I tested for two days all of my cards before going into the mining rig. i programmed the bios in all of them and i tweaked as much as possible the voltages except for memory. ETH is a pretty intensive algo with the memory, and i prefered to forget about having problems with undervolting. I suppose your undervolt saves you some money.

my 2x6 mining rig are off. and they will continue to be off for a large period of time. I will only turn them on if i can get 100$ profit per month or more after electricity bill, which i think will not happen this year.  At current prices , and the very expensive cost per kW i would be losing around 15 $ for month with bills of around 350€ or a bit more in summer due to fans having to work hard in my room to deal with heat, specially where i live.

So....yeah...mining is not worth for me.

That's because the difficulty is a lagging indicator. When the price first started jumping to $250-300 difficulty actually DROPPED. However, as the price increased and stabilized for a couple of weeks difficulty increased. I suspect if this price drop continues or stabilizes around $160-200 we'll see about 2.0T difficulty, but it takes time for the farms to react.    

Further updates
I've been busy trying to stabilize my rigs, 90% of my problems involve riser issues and cards "falling off the bus" the rest is just the typical overclock/undervolt issues and finding the right settings. I have to praise SRB BIOs mod. It literally saved me as 'one-click' PBE was awful for these Hynix cards. Resulting in tons of crashing and BSODs. Once I tried SRB it increased my hashrate for Hynix and Elpida to 30mh/s per card at 1950-2000mhz@860-875mv(core/mem) which is about 120w~ a card. Total hashrate for my rigs is around 385-393mh/s for 13 GPUs @ 1650w~ total power per rig.

I've been mining since 2017 and one thing I learned is to HODL the coins you earn as much as possible and never ever sell during down-periods. Right now while my rigs "aren't as profitable" due to the down-turn. In one month time that can literally change as markets pick back up. I cover my electric as much as possible with my normal IT job and sell coins to cover the rest.

As of the time of this writing, since I started this thread and my farm back-up mining ethereum in Ernst I have collectively mined 9.5 Ethereum. Mind you I was slowly getting rigs online and lots of crashes so this hasn't been 24/7 mining. This is one-man operation as well and I have a normal 9-5 job, girlfriend, and life. I spend as much time as possible working on my farm as a second job. My goal is to achieve 90% stability by End of July with everything fully stable and running by August. Right now I'm at 65% with 11/14 rigs running continually but with a few crashes/restarts due to GPU crashes in claymore.

Currently using a mixture of Windows 10 OS and HiveOS. HiveOS to spot out and detect bad risers and Windows OS for testing Voltage and clockspeeds. I'm thinking once everything is stable at clocks/voltages for the GPUs. I will BIOs flash them to that specific clock and run everything in HiveOS. However I'm not 100% on that since it costs me $3 per rig per month in HiveOS while i have already paid/own Awesomeminer for 20 rigs and there is no monthly reoccurring fee.

you seem to be like one of those poor guys outthere that would kill for 10$. Sorry, i don't want to deal with people like that. It makes no sense. Ohh, BTW, at 0,06$/kWh you live in a third world country, so i undestand your way of thinking. You make more mining than working, so 10$ for you can be way more money than working. It makes sense. For 10$ profit per month, i don't even take the cotton sheets from the equipment.


Oh, BTW, at lowest prices on ETH (80$ more or less), it never went down of 134.000Gh/s. Even if we have seen a drop in value of over 35% in last month, the hashrate went from about 145.000gh/s to actual 172.000gh/s. In last two days, with masive drops of nearly 25%, it increased from 162.000gh/s to 176.000gh/s even with bloodbath in the streets.

So people turned on their equipments even at heavy loses, which show how "intelligent" are miners nowadays.

fact is, difficulty is not going down and price is 50% lower and as I can see difficulty is not going down at all because trend is to hit all time high by the end of this year.

I can add some information, that can help you to collect some more facts.
The average price in my country - less about  $0.06/kW.
In the first post TS shows Mh and power consumption - totally it 6454/21910. And $0.1 per kW.
Less profit - much miners turns rigs off - difficulty down - more profit.
More ETH at low cost and low difficulty - HODL - more profit.

Give some more facts please.

some facts.

you can expect around 30,5mh/s x 6 gpus from every rig (that makes around 183mh/s). You can expect something around 135W for every card. so around 22kW of power considering all the gpus + components.

Your ETH hashing power should be around 4800mh/s. If your Electricity cost is around  0,10 you make 511$ right now (that's not even considering ROI, bill taxes, or government taxes over profit. 0,11cnt/kW you make 352$ right now. 0.12cnt/kW you make 194$. and at 0,13cnt/kW you make 36$.


Now, the average price in my country for every kW is around 0,15€/kW (we pay 26% taxes over electricity prices due to leftists "idea" with green energy). Which is around 0,17$ (including all taxes). Talking in numbers, a guy living in my country with your setup, will be losing almost 600$ per month at current prices.

With 1-2 rigs you have little problems but little profit. When you are growing up your problems becomes bigger but profit grows too. Someone without IT knowledge hires someone to service his rigs, someone trying to do it by themselves, someone stops extending. Anyone decides by himself.

You definetly timed the market correctly with your sells and buying back in. Hopefully Ethereum will be mineable for some more months/years. When ETH becomes POS your weight on the chain will vaporize..

If you can ROI on your USD and Eth amount plus Additional 20-30 percent as a general income tax rate.  I will consider this a win.  Anything less is a fail and waste of time

It's too much work, too much money to spend to make all work and then all need to be maintained every single second. People that say mining is easy they have no idea about it at all, yes it's easy to maintain a single rig with 6 gpus and not much is needed, now, many rigs is very hard because after some rigs start the problems and the first will be heat, too much heat, you will have to upgrade many things for your farm to work and that will cost too much money if you do it right.

Short update. It's been a challenge finding the right BIOs mod, settled with SRBN which has given me excellent hashrate and power consumptions for Elpida and Hynix GPUs. I have 10 GPUs fail and or DOA on me. Which I'm in the process of returning to the seller. Currently only 1 RIG down and at 6.0Gh/s for my farm! Net earning per day are currently at a total of $146. This includes all the RX and Nvidia GPUs mining Ethereum. Will try to update with pictures soon and a 'what i learned'