Skip to content
Small team, full backlog, zero orders dropped. Support replies are slower than we’d like. Read our status update → Zero orders dropped. Status → 📬 Check your spam folder — most of our replies land there. We do answer. Status update → 📬 Check your spam folder. Status →
Bitmain Antminer S21 official reference

Bitmain Antminer S21 official reference

Hashrate 200.0 TH/s Power 3,500 W Efficiency 17.5 J/TH
VS
MicroBT WhatsMiner M60S++

MicroBT WhatsMiner M60S++

Hashrate 200.0 TH/s Power 3,230 W Efficiency 16.2 J/TH

Bitmain Antminer S21 official reference vs MicroBT WhatsMiner M60S++

Side-by-side specs, profitability, and home mining comparison.

Quick verdict

For most buyers the MicroBT WhatsMiner M60S++ is the stronger pick — Peak-binned chips deliver best-in-class efficiency from MicroBT's platform. The Bitmain Antminer S21 official reference runs 200.0 TH/s at 17.5 J/TH; the MicroBT WhatsMiner M60S++ runs 200.0 TH/s at 16.2 J/TH.

Specs verified against the D-Central Mining Bible \xc2\xb7 August 2026

Specifications Comparison

Bitmain Antminer S21 official reference Specification MicroBT WhatsMiner M60S++
200.0 TH/s Hashrate 200.0 TH/s
3,500 W Power Consumption 3,230 W
17.5 J/TH Efficiency 16.2 J/TH
Noise Level
15.4 kg Weight 11.5 kg
11,942 BTU/hr BTU Output 11,021 BTU/hr
Home Mining Score
Release Year
SHA-256 Algorithm SHA-256
Bitmain Manufacturer MicroBT

Profitability Comparison

$/kWh

Bitmain Antminer S21 official reference

Daily Revenue 0.00009994 BTC $7.96
Daily Electricity -$8.40
Daily Profit -$0.44
Monthly -$13.20
Yearly -$160.55

MicroBT WhatsMiner M60S++

Daily Revenue 0.00009994 BTC $7.96
Daily Electricity -$7.75
Daily Profit $0.21
Monthly $6.24
Yearly $75.97

Based on BTC price of $79,651 and current network difficulty as of Aug 28, 2026. Actual results vary.

Verdict

Flagship versus flagship: Bitmain's standard S21 against MicroBT's fully optimized M60S++. The best of both brands at their respective price tiers.

The M60S++ is MicroBT's peak performer with cherry-picked chips. It trades blows with the S21 on efficiency. The decision comes down to availability, price, and your preferred ecosystem for parts and support.

Winner: MicroBT WhatsMiner M60S++ — Peak-binned chips deliver best-in-class efficiency from MicroBT's platform

Spec Deltas

Stripped to the numbers, this is how far apart the Bitmain Antminer S21 official reference and MicroBT WhatsMiner M60S++ sit on each measurable spec:

  • MicroBT WhatsMiner M60S++ 8% better power draw (3,500 vs 3,230 W)
  • MicroBT WhatsMiner M60S++ 8% better efficiency (17.5 vs 16.2 J/TH)
  • MicroBT WhatsMiner M60S++ 25% better weight (15.4 vs 11.5 kg)
  • Bitmain Antminer S21 official reference 8% more heat output (11,942 vs 11,021 BTU/hr)

Best For...

Best for Profitability

MicroBT WhatsMiner M60S++

$0.65/day higher profit at current rates.

Best for Home Mining

Tie

Both miners are equally suitable for home use.

Best for Efficiency

MicroBT WhatsMiner M60S++

16.2 J/TH — lower electricity cost per unit of hashrate.

Frequently Asked Questions

Is the M60S++ more efficient than the S21?

They are extremely close. Depending on firmware version and ambient conditions, either could edge out the other. Real-world differences are marginal.

Which has better resale value?

Bitmain's larger market share gives Antminers slightly better liquidity. However, MicroBT's ++ models are well-regarded and hold value among informed buyers.