In our Antminer S21 overview, we examined the S21's hash charge and effectivity at varied temperature ranges and when transformed to grease cooling to check real-world efficiency.
S21 is the most recent technology ASIC miner launched by Bitmain in 2023 utilizing the SHA256 algorithm. You possibly can presently mine BTC/BCH/BSV. The specs of S21 have been revealed by Bitmain official and have a hash charge of 200T and energy effectivity of 17.5J/T. Bitmain additionally reveals the impact of temperature on an internet site's hash charge and energy consumption charge. S21 appears to be probably the most environment friendly Asic miner thus far, so he ran two samples to check its real-world efficiency.
About S21 check information
- at ambient temperature
2. At heat-resistant temperature
The warmth resistance temperature of S21 is 48℃. When the ambient temperature exceeds 40℃, the hash board prompts overtemperature safety, inflicting the chip to underclock. The frequency will drop from 490M to 440M. As a security measure, the He S21 Miner will routinely shut down if the temperature exceeds 47℃.
3. Chilly begin
The S21 begins and operates successfully even at -10°C. Usually booting at -20°C and -15°C, the system prompts low temperature safety and shuts down the miner. Subsequently, the S21 would require a better preliminary temperature than the S19XP.
4. When altering from air cooling to grease cooling
Though the oil-cooled model presents elevated energy density for the unit in comparison with air-cooled, changing air-cooled to oil-cooled additionally runs into guarantee points and presents fewer advantages than sure immersion-cooled miners. When changing S21 from air cooling to grease cooling, the ability consumption ratio can be greater than 18.5W/T at 50℃, it can begin underclocking at 55℃ and enter excessive temperature safety at 60℃.
5. Begin at every temperature level
When the hash charge reaches 200T throughout the temperature vary of 20℃ to 35℃, the ability consumption ratio will increase by about 1.74W/T. At 40℃, a discount within the frequency of S21 happens, the working frequency is lower than 440M, and the hash charge is 180T. Moreover, the ability consumption ratio will increase by roughly 2.4W/T at 45℃. When the temperature exceeds 45°C, safety mode is initiated and the ability consumption charge will increase quickly.
When working two S21 air-cooled miners at temperatures above 25°C, we discovered that the ability consumption ratio considerably exceeded the producer's official specs. Moreover, hashrate fluctuates considerably beneath excessive temperature situations. Underneath excessive temperatures and harsh environmental situations, the S21 will be unable to attain its claimed specified energy consumption charge, making it uncompetitive available in the market.
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