Which one is right for you?

Bitmain Antminer S21 vs. WhatsMiner M66S

Which one is better in 2025? In-depth comparison of Bitmain Antminer S21 and WhatsMiner M66S

Bitmain Antminer S21 and WhatsMiner M66S are two popular asic miners with different costs, ease of use, and compatibility.

We've compared Bitmain Antminer S21 head-to-head with WhatsMiner M66S to help you decide which is best for your needs.

	Select a product	Select a product
	Bitmain Antminer S21 Request for quote	WhatsMiner M66S Request for quote
Algorithm	SHA256	SHA256
Hash Rate	200 TH/s	286 TH/s
Unit Power	17.5 J/TH	18.5 J/TH
Power Consumption	3500 W	5291 W
Cooling	Air	Air
Coins	Bitcoin (BTC) Bitcoin Cash (BCH) Bitcoin SV (BSV)	Bitcoin (BTC) Bitcoin Cash (BCH) Bitcoin SV (BSV)