MicroBT
WhatsMiner M66 276T
- Hashrate
- 276TH/s
- Power
- 5,492.4W
- Efficiency
- 19.9J/TH
- Immersion
- SHA-256
$2,097.60$7.6/TH

Picture of the model. The unit you receive may differ in appearance.
The Antminer S21 IMM 221T is an immersion Bitcoin miner from Bitmain, rated at 221 TH/s.
$1,709.05
per unit · $7.73 per TH/s
| 1–4 units | $1,709.05 |
|---|---|
| 5–19 units | Volume pricing on request |
| 20–99 units | Request Quote |
| 100+ units | Contact Mining Sales |
The Antminer S21 IMM 221T is an immersion Bitcoin miner from Bitmain, rated at 221 TH/s.
Condition: New.
221 TH/s
Rated hashrate
Immersion
Cooling method
SHA-256
Algorithm
Fields that are not stated are left out rather than estimated.
| Hashrate | 221 TH/s |
|---|---|
| Algorithm | SHA-256 |
| Supported coins | BTC |
| Cooling type | Immersion |
|---|
How the Antminer S21 IMM 221T compares with the closest alternatives by cooling type and efficiency.
| Model | Hashrate | Power | Efficiency | Cooling | Price | $/TH | Side by side |
|---|---|---|---|---|---|---|---|
| Antminer S21 IMM 221T (this miner) | 221 TH/s | — | — | Immersion | $1,709.05 | $7.73 | |
| WhatsMiner M66 276T | 276 TH/s | 5,492.4 W | 19.9 J/TH | Immersion | $2,097.60 | $7.60 | Side by side |
| WhatsMiner M66S 286T | 286 TH/s | 5,291 W | 18.5 J/TH | Immersion | $2,445.30 | $8.55 | Side by side |
| Avalon A1566I 249T | 249 TH/s | 4,500 W | 19 J/TH | Immersion | $1,994.05 | $8.01 | Side by side |
| Avalon A1366I 119T | 119 TH/s | 3,570 W | 30 J/TH | Immersion | On request | — | Side by side |
Standard shipping is free to every destination we ship to. If you need it faster, choose express shipping at checkout and we quote it before you pay. Import duties, taxes and customs clearance are set by the destination country and are the importer's responsibility unless your quotation states otherwise.
The Antminer S21 IMM 221T is built for immersion cooling: it runs submerged in dielectric fluid inside a tank and has no fans. Compare options in Air vs hydro Bitcoin miners.
Yes. Orders are handled by quantity: small quantities through checkout when a price is published, and larger quantities by quotation with pricing, batch and logistics confirmed by sales. Request a wholesale quote.
The closest alternatives by cooling type and efficiency.
MicroBT
$2,097.60$7.6/TH
MicroBT
$2,445.30$8.55/TH
Canaan
$1,994.05$8.01/TH
Canaan
Price on request

Wholesale & project supply
Send quantity, destination and required date. Sales replies with batch availability, unit pricing and freight options for your order size.
Antminer S21 IMM 221T
$1,709.05