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	318 TH/s
Unit Power	17.5 J/TH	17 J/TH
Power Consumption	3500 W	5406 W
Cooling	Air	Air
Coins	Bitcoin (BTC) Bitcoin Cash (BCH) Bitcoin SV (BSV)	Bitcoin (BTC) Bitcoin Cash (BCH) Bitcoin SV (BSV)