Miner Performance Testing: Bitmain Antminer T21

Bitmain’s Antminer T21 marks its first miner with a 50% size increase in power supply. We tested the new unit’s performance and outlined its success below.

Features

Compared to the 2.7 A fans used in all previous units, the T21 boasts 4.5 A fans, offering better airflow and heat tolerance than any previous machine. The T21 is Bitmain’s first unit with this fan type — and from our perspective, it proved to be worth the upgrade with respect to performance.

Further contributing to its performance, the machine’s 3-phase power supply provides automatic phase balancing. Without imbalanced loads on the electricity supply, miners can see less wear and tear on electrical systems and better energy efficiency.

Performance

In Normal mode, the T21 achieved 190 Th/s using 3672 W of power for an efficiency rating of 19 W/Th. In High-Power mode, the T21 achieved 230 Th/s using 5615 W of power for an efficiency rating of 24 W/Th. The machine’s 3-phase power supply provides the 5500 W power that the high-power mode needs.

Maintaining its performance in all modes amid temperatures ranging from 27°F to 65°F, the ambient temperature swings had minimal impact on hashrate and efficiency.

Available Through FoundryX

Overall, the Bitmain Antminer T21 outperformed previous models, showing higher efficiency and hashrate compared to Bitmain’s previously released units. Reach out to the FoundryX team today to acquire this unit.

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