Antminer T21 – 190 TH/s (Air-cooled) bitcoin machine

Description

🔹 Antminer T21 – 190 TH/s (Air-cooled)

• Hashrate: 190 TH/s

• Power consumption: ~3,610 W → ~19 J/TH efficiency asicminerdepot.com+14cryptotech.eu+14mbminers.com+14

• Operational voltage: 380–415 V, 3-phase oemminer.com+1mbminers.com+1

• Noise level: ~75–76 dB, 4‑fan cooling cryptotech.eu

• Dimensions: ~400 × 195 × 290 mm, ~16.4 kg asicminerdepot.com+11cryptotech.eu+11oemminer.com+11

• Estimated daily profit: ~$5.22/day (at typical rates) asicminervalue.com+2miningnow.com+2reddit.com+2

Pros: Excellent efficiency at ~19 J/TH, solid ROI if you have industrial-grade power and infrastructure.
Cons: Requires 3-phase input; loud and generates lots of heat—best suited for industrial or farm settings.

🔹 Antminer S21 – 200 TH/s (Air-cooled)

• Hashrate: 200 TH/s

• Power: ~3,500–3,550 W → ~17.5–17.75 J/TH reddit.com+15mbminers.com+15antminerchina.com+15xn--bitmai-ufc.com+3shop.leedminer.com+3asicminervalue.com+3

• Cooling: Dual-fan or 4‑fan air cooling, 75 dB noise oemminer.com+2cryptotech.eu+2antminerchina.com+2

• Power input: Single-phase 220–240 V cryptotech.eu+15antminerchina.com+15mbminers.com+15

• Size/weight: ~400×195×290 mm, ~14–16 kg wyminer.com+10xn--bitmai-ufc.com+10mbminers.com+10

• Price range: Approx. $1,950–$3,350 depending on vendor xn--bitmai-ufc.com

• Low‑power mode option: Around 160 TH/s at ~2,600 W mbminers.com+10reddit.com+10techradar.com+10

Pros: Highest single-phase air-cooled hashrate available; no need for three-phase power which is great for home labs or small ops.
Cons: Heavy noise/heat; still requires proper electrical setup and ventilation.

💬 Community Insights

“Low power mode hashes at 160 TH and uses 2600 watts.” reddit.com
“Just installed S21 200 TH… added a 240 V circuit… Running it in Low power mode.” reddit.com+13reddit.com+13reddit.com+13

These indicate users frequently use the S21 in “low power” mode to manage heat and noise, especially in non-industrial environments.

✅ Which to Choose?