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The Antminer S21 is the most efficient Bitcoin mining rig model from Bitmain. Bitmain released the model at its World Digital Mining Summit in September 2023. At 200TH/S and 17.5J/T, the air-cooled model is the most powerful and efficient Asic miner on the market. The first deliveries of the model are expected to arrive in January 2024.
The Exterior of Antminer S21
The Antminer S21 maintains a similar size to its predecessors but is slightly heavier, weighing in at 15.4 kg—1 kg more than the Antminer S19 XP and 2.2 kg heavier than the Antminer S19j Pro. It features the new power supply unit (PSU) first introduced with the Antminer S19j XP, the APW 171215a, which includes five high-voltage 500G capacitors. Notably, this PSU uses the P14 plug type (also known as a P45 plug), differing from the plugs used in most of the S19 series. Additionally, the power cord end, known as “Antwire,” follows a new standard, the P13. As a result, miners will need either a P13 cord and a specialized PDU or a customized C20-P13 cord to connect to a C19 PDU.
The Profit of Antminer S21
As we all know, Antminer S21 Hydro also attracts much attention. It has a hashrate of 335 TH and an efficiency ratio of 16J/T, which makes it ranks at the top of the BTC revenue list. The income per unit is about $114.5.
Despite being an air-cooled mining machine, the Antminer S21 excels with its impressive hashrate, securing the top spot on the BTC revenue list within its category. It even surpasses some hydro-cooled mining machines in terms of performance. With an income per unit of approximately $8, the Antminer S21 proves to be a superior option, especially if you don’t have the capability to operate a hydro-cooled machine. Its efficiency and revenue potential make it an excellent choice for miners seeking high performance without the need for advanced cooling systems.
While water-cooled mining is likely the future trend, the initial investment for hydro miners remains relatively high. As mining difficulty increases, so do the costs associated with water-cooling equipment and infrastructure. The Antminer S21 offers an attractive alternative, providing customers with a high-performance air-cooled option. Its advanced features and efficiency make it a viable choice for those who prefer to avoid the complexities and costs of water-cooling systems, ensuring more flexibility in selecting the right mining equipment.
The Upcoming Bitcoin Halving
The Antminer S21 is the most efficient Bitcoin ASIC miner on the market. It is 17.5 J/TH efficient. It is the first Bitcoin ASIC miner to use less than 20 J/TH of power, which will make it become the most popular miner on the market.
As we all know, we are about to have the Bitcoin halving. Bitcoin halving is expected in April 2024. Based on the experience of the past three Bitcoin halvings, the price of Bitcoin one month before each halving was lower than the price at that time. Since the Bitcoin halving is arguably the most important fundamental event related to Bitcoin and is almost universally interpreted as a bullish event because the halving will result in a reduction in the issuance of new Bitcoins, the market is optimistic ahead of the halving. It makes sense.
Regarding Bitcoin’s price after each halving, we see two price increases and one price decrease. If the currency price does not rise after the halving, miners with high electricity prices and high power consumption will face a shutdown. Only miners with low power consumption and reasonable electricity prices can survive. If the currency price rises to more than 60,000 US dollars, or even higher, then all the machines can be revived.
