Not to argue about the Avalon 841 vs the bitmain s9. Availability and price matter.
Ie at 250 for an s9 and a psu if the s9 does 13th that is about 21 cents x 13 = 2.73 a day
the A841 at 12th makes about 2.52 a day
you need to get them fast and at about 250 a unit with the psu included.
if they burn 1200 watts that is 30 kwatts at 2.5 cents power cost is 75 cents
so the s9 clears 1.98 a day today subject to change and the A841 clears 1.77 a day.
so if you can find them at 250usd with psu included you could turn a profit.
Ebay has a guy selling s9 with psu for 249.99
https://www.ebay.com/itm/Bitmain-Antminer-S9-w-psu-Runs-on-120v-household-current/324442107132?
I don't know a thing about the seller. He has about 14-18 for sale.
minefarmbuy has the t15
https://minefarmbuy.com/product/antminer-t15-3p/?v=a284e24d5f46
but I think it may not work for you at this price.
Topic: Q: Most reliable SHA-256 Asic Miners - page 2. (Read 388 times)
Then that would be the Avalons. Over the past few years I've ran several dozen of them from A721's on up to the latest: Zero major problems and just 3 dead fans. Frankly I doubt any other make is more reliable.
Only one I would say to avoid is their A921 series and that is just because the 841's can be made to be just as efficient in power/hash rate. It also uses a larger 140mm fan that can be rather hard to find a replacement for.
Only one I would say to avoid is their A921 series and that is just because the 841's can be made to be just as efficient in power/hash rate. It also uses a larger 140mm fan that can be rather hard to find a replacement for.
Actually we did the calculations, and since rental is not a problem since my partner is the owner of the place.
And we are accepting the fact that bitcoin might dip in the near future. And we found out that our investment can have a 3 to 4 months roi. Since when btc dips usually the difficulty will drop. And we are planning for a long term holding btc.
So my question now is which is the better option of hardware that is reliable enough with less maintenance and problems.
And we are accepting the fact that bitcoin might dip in the near future. And we found out that our investment can have a 3 to 4 months roi. Since when btc dips usually the difficulty will drop. And we are planning for a long term holding btc.
So my question now is which is the better option of hardware that is reliable enough with less maintenance and problems.
The most reliable are the Avalons. Damn near bulletproof plus they are very tweakable for speed/power.
When using the A8xx, be aware that while you can run you to 20 miners per-controller you CANNOT mix miner types on a controller. The 841, 851, 852 all need a separate controller for each model. Also while each AUC dongle can support up to 5 miners in a string (and max 4 dongles per controller) yuo get better results with less stales if you keep it to 2-3 miners per string.
When using the A8xx, be aware that while you can run you to 20 miners per-controller you CANNOT mix miner types on a controller. The 841, 851, 852 all need a separate controller for each model. Also while each AUC dongle can support up to 5 miners in a string (and max 4 dongles per controller) yuo get better results with less stales if you keep it to 2-3 miners per string.
I'm sorry I corrected my post.
It was a mistake while converting my currency to usd.
It's 2.5cents per kwh
It was a mistake while converting my currency to usd.
It's 2.5cents per kwh
That's more like it
For an S9:
https://www.coinwarz.com/mining/bitcoin/calculator?h=13.50&p=1350.00&pc=0.03&pf=0.00&d=20823531150112.00000000&r=6.25000000&er=1&btcer=34366.17000000&ha=TH&hc=2407.00&hs=0&hq=1
So, basically $1.8/day net profit... Take the price you'd pay for the S9 + PSU + S&H + import duty + ... and divide the sum by $1.8. You'll see the the amount of time (in days) you'd have to mine to recuperate your hardware investment. If you trust the diff to remain stable, the price not to drop and it's before the block reward halves, you might have a shot at making money...
Some people also include the resell value of their hardware in this calculation... But be carefull: these ASIC's tend to break after a while... You don't have any guarantee you'll have something to resell in 6 months...
I'm sorry I corrected my post.
It was a mistake while converting my currency to usd.
It's 2.5cents per kwh
It was a mistake while converting my currency to usd.
It's 2.5cents per kwh
hmmm... 25 cents/Kwh and mining with older gen ASIC's... sounds like a recipe for disaster to me...
I stopped mining years ago, i think it was when my electricity price reached about 20 cents/khw, since then the diff has skyrocketed.
I did a quickcalculation
https://www.coinwarz.com/mining/bitcoin/calculator?h=110.00&p=3250.00&pc=0.25&pf=0.00&d=20823531150112.00000000&r=6.25000000&er=1&btcer=34366.17000000&ha=TH&hc=2407.00&hs=0&hq=1
You'll make $3.3/day
If you'd replace this with an S9:
https://www.coinwarz.com/mining/bitcoin/calculator?h=13.5&p=1350&pc=0.25&pf=0.00&d=20823531150112.00000000&r=6.25000000&er=1&btcer=34366.17000000&ha=TH&hc=2407.00&hs=-1&hq=1
You'll LOSE about $5.3/day... That's right, each day you mine with an S9 with a power price of 25 cents/kwh, your power bill will be $5,3 HIGHER than the value of the BTC you receive from your pool.
Bottom line, even if you'd buy a brand new ASIC, it would cost you $3770 + S&H + PSU + import duty + shelves + wiring + AC + ... It would take you 10 or 15 years to recuperate your investment IF ONLY the diff would no longer rise, the price would stay fixed and the block reward wouldn't halve.
Mining with anything less than latest gen gear would hemorrage money straight from the start.
At 25 cents/kwh, don't mine... Sad but true... Mining is for people with a power price < 10 cents/kwh
I stopped mining years ago, i think it was when my electricity price reached about 20 cents/khw, since then the diff has skyrocketed.
I did a quick
https://www.coinwarz.com/mining/bitcoin/calculator?h=110.00&p=3250.00&pc=0.25&pf=0.00&d=20823531150112.00000000&r=6.25000000&er=1&btcer=34366.17000000&ha=TH&hc=2407.00&hs=0&hq=1
You'll make $3.3/day
If you'd replace this with an S9:
https://www.coinwarz.com/mining/bitcoin/calculator?h=13.5&p=1350&pc=0.25&pf=0.00&d=20823531150112.00000000&r=6.25000000&er=1&btcer=34366.17000000&ha=TH&hc=2407.00&hs=-1&hq=1
You'll LOSE about $5.3/day... That's right, each day you mine with an S9 with a power price of 25 cents/kwh, your power bill will be $5,3 HIGHER than the value of the BTC you receive from your pool.
Bottom line, even if you'd buy a brand new ASIC, it would cost you $3770 + S&H + PSU + import duty + shelves + wiring + AC + ... It would take you 10 or 15 years to recuperate your investment IF ONLY the diff would no longer rise, the price would stay fixed and the block reward wouldn't halve.
Mining with anything less than latest gen gear would hemorrage money straight from the start.
At 25 cents/kwh, don't mine... Sad but true... Mining is for people with a power price < 10 cents/kwh
Hello all. I am totally new to Asic mining, I used to mine on a gpu rig at home 3 years ago, but never had the attention to use Asic miners because of their high prices and unavailability in my country.
Currently I received an offer from a friend to start an asic mining farm since he have an access to very cheap energy (around 2.5 cents per Kw) of up to 250KW. So efficiency is not a problem here.
I found out that old Asic miners a lot cheaper these days than before, but I'm struggling to choose from a lot of manufacturers like bitmain, Canaan, innosilicon, Aisen, etc. Doing some research I found out that maybe Canaan has a good review of users, but bitmain is more easier.
Anyway, my targets are old S9's, Avalon 841, 851, 852, Aisen A1, innosilicon T1, T2, etc. Those which are cheap ASICS.
I wanna know which asic should I go with? My target is cheaper cost with higher TH and reliable equipment. Minimum 10TH to 40TH for each miner. I hope I can find the help here.
If anyone has a reliable seller too I will be glad to contact them.
Thanks alot.
Currently I received an offer from a friend to start an asic mining farm since he have an access to very cheap energy (around 2.5 cents per Kw) of up to 250KW. So efficiency is not a problem here.
I found out that old Asic miners a lot cheaper these days than before, but I'm struggling to choose from a lot of manufacturers like bitmain, Canaan, innosilicon, Aisen, etc. Doing some research I found out that maybe Canaan has a good review of users, but bitmain is more easier.
Anyway, my targets are old S9's, Avalon 841, 851, 852, Aisen A1, innosilicon T1, T2, etc. Those which are cheap ASICS.
I wanna know which asic should I go with? My target is cheaper cost with higher TH and reliable equipment. Minimum 10TH to 40TH for each miner. I hope I can find the help here.
If anyone has a reliable seller too I will be glad to contact them.
Thanks alot.
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