In May 2019, MicroBt launched their well known Whatsminer M20
series. Whatsminer is MicroBt's Bitcoin mining hardware brand with
an ASIC Plug & Play Mining design sold by MicroBt. The Whatsminer
M21s mines Bitcoin(BTC) or Bitcoin Cash(BCH) immediately and helps
miners jump into the new digital currency rush.
Seen as the ultimate win-win, successful reproduction of the
earlier models of the Whatsminer M10 series, the products consisted
of the M20, M21, M21b, M20s, and M21s, all adopting Samsung 8nm
chip, and releasing MicroBt’s new logo, which has more features and
is more characteristic.
Founded in 2016, Shenzhen Bit Microelectronics Technology (Also
Known as MicroBt) is one of the leading Application Specific
Integrated Circuit (ASIC) producers. The company is into the
production and design of high-end 28nm/16nm/7nm working chips and
provides developments/assistance in fields such as blockchain
technology, cloud computing, and artificial intelligence.
Specifications
The hash rate of the Whatsminer M21S is 58T, which gives it an edge
over the M21 model, and the physical size is 155 x 240 x 390mm with
a weight of 7.1kg. The size dimension makes the device less bulky
to handle and also helps conserve space in mining farms.
The M21s come with a P5-12-2200-V1 power supply to produce an
output of DC 12.8V 172A, and the 10A socket in the mining farm
works well.
The power supply comes with an aluminum rack, which protects the
wires on the connector side. It is used as a handle for ease of
usage.
This miner works with a power efficiency of 0.06j/Gh, and it has
two 12038 cooling fans, one for blowing air and one for release of
air, and the fan power is 12V 2.8A, just like its older model.
Algorithm
The Whatsminer M21s mines with the SHA-256 algorithm can produce up
to 40 coins, but the top coins are Bitcoin(BTC) and Bitcoin
Cash(BCH). With an average hash rate of 56Th/s, it uses 3360W of
power.
The board is an Ethernet interface, TF card slot, IP button, reset
button, and status indicator on the control. But the most
impressive is the fact that the MAC address is attached to the
control board for convenience when looking for the device's IP
address. This feature aligns with Whatsminer’s pledge to produce
miners that are easy to use for everyone.
Noise Level
This device's noise is pretty normal, as most miners have a 60-80dB
noise level. To better understand this, a noise level of 75 dB is
equivalent to a vacuum cleaner's noise emission. The Whatsminer
M21s can be used for mining at home as the noise level is optimal,
but mining farms are more suitable. The noise is normal as a result
of the two fans set for cooling.
