Antminer T21 – 233 TH/s

Product Description

The Antminer T21 is an air-cooled SHA-256 ASIC miner from Bitmain for Bitcoin (BTC). This 233 TH/s version is listed at 4,630 W, an efficiency of 19.00 J/TH.

As an air-cooled machine it relies on its own fans, so it needs a steady supply of cool intake air and somewhere for the hot exhaust to go. Plan ventilation and noise before the unit arrives.

Before you order

• Power: 4,630 W, about 19.3 A at 240 V. Size the circuit for a continuous load and check the input voltage on the unit before you plug it in.
• Noise: listed at 75 dB, so plan a space away from living areas.
• Algorithm: SHA-256. Read what hashprice means for SHA-256 miners.
• Released: February 2024.

Compare other models in our Bitcoin Miners (SHA-256) range, or see how efficiency is measured in Hashrate, TH/s and J/TH explained.

Technical Specifications

Frequently asked questions

How much power does the Antminer T21 use?

This 233 TH/s version is rated at 4,630 W from a 380-415 V AC three-phase supply.

Can I run the Antminer T21 at home?

Usually not. It needs 380-415 V AC three-phase power, which ordinary US homes do not have, so plan it for a commercial or industrial site with an electrician-sized supply.

How loud is the Antminer T21?

It is listed at 75 dB. At that level, plan a dedicated room or outbuilding rather than a living area.

What coins can the Antminer T21 mine?

It mines SHA-256, so it can mine Bitcoin (BTC) and other SHA-256 coins such as Bitcoin Cash (BCH). It works with any SHA-256 pool; see mining pools explained.

Does the Antminer T21 come with a warranty?

Yes. This listing is for a new unit with a 30-day limited warranty from Bitminers, starting on the date of delivery. A manufacturer warranty may also apply. See our Warranty Policy.

Shipping, Payment, Warranty & Returns

• Shipping: United States only. Flat rate of $120 per order. Orders are dispatched within 5-10 business days after payment is received, and transit within the US takes 0-1 business days after dispatch. See our Shipping Policy.
• Payment: bank transfer. Our bank details are provided after you place your order. See our Payment Policy.
• Warranty: 30-day limited warranty from Bitminers, starting on the date of delivery. A manufacturer warranty may also apply. See our Warranty Policy.
• Returns: eligible items can be returned within 20 calendar days of delivery. See our Return & Refund Policy.

Related guides: Antminer models explained · Hashrate, TH/s and J/TH explained · ASIC miners compared by efficiency

Mining results depend on electricity costs, network difficulty and cryptocurrency prices. Bitminers does not guarantee mining profitability or return on investment.