Bitmain Antminer S21 Review. Hashrate and consumption

This Asic has a hash rate of 200 Th/s! And the efficiency is 17.5 J/TH.

S21 Profitability Breakdown

A dedicated tab was created for the S21 in NiceHash to keep its statistics separate. On the dashboard, the machine is listed under the IP suffix 77.

Current profitability changes every minute, so it is better to rely on historical data. The average hashrate over the last 30 days was 190 TH/s. The unit's specification states 200 TH/s, but payouts are based on the effective hashrate the pool sees.

The average daily income came out to $16.48. Over the month, it managed to earn $507.16 before accounting for electricity costs.

Power consumption measured at the wall outlet is a constant 3,535 watts in normal mode. At a rate of $0.05 per kWh (the actual cost is slightly lower, but we will round up), the daily consumption of 84.84 kWh costs $4.24.

The result is a net profit of $12.66 per day. Multiply that by 30 for a monthly net of $379.95 per ASIC. Multiply by 12 for an annual figure of approximately $4,558. This points to a payback period of just over one year, factoring in coin prices and network difficulty.

Home Mining? No!

Now, the S21 is not exactly suited for every home miner. Most would not be able to run such a powerful ASIC miner for a few key reasons.

First, 3500 watts is a significant draw, especially for a household. Fortunately, we have an A6 garage with configured PDUs and dedicated 240-volt 30-amp lines, so we can handle it. But your average home miner is unlikely to have 3500 spare watts available.

Moreover, this thing is just incredibly loud. Most Bitmain ASIC miners are noisy, but this one absolutely screams. Running this at home is not a good idea. Maybe in a garage, but your wife would definitely not approve

Which Asic is better to buy: Bitmain S21 or S21 Hyd?

If you enter mining not on your last money and not on credit and have a rather large budget, then of course it is better to buy at once a more powerful version of Asic - S21 Hyd.

In fact, mining is a race of power. The more powerful your Asic, the more competitive you are, and therefore the longer your equipment will bring you profit!

Which Asic is better to buy: Bitmain S21 or WhatsMiner M56S++?

Of course, WhatsMiner M56S++ is not much more powerful than S21 - by 30 Th/s! However, if M56S++ will be noticeably more expensive for you, it is better to buy an Asic on a budget.

Yes, 30 TH/s is not low, however these Asics plus minus are the same. S21 has 17.5 J/TH and M56S++ has 22 J/TH.