Antmin S21

The Antminer S21 series by Bitmain remains a cornerstone of the Bitcoin mining industry in 2026, prized for its industry-leading energy efficiency (J/TH) JsbitAsicminershopforall. The series includes several air-cooled variants—the standard S21 (200 TH/s), the S21 Pro (234 TH/s), and the high-performance S21 XP (270 TH/s)—each designed to optimize hashrate against power consumption BitmainJsbit.

Product Specifications & Comparison

The S21 series utilizes a 5nm chip process to achieve efficiencies as low as 13.5 J/TH SimpleminingJsbit.

Market Trends & Insights (2026)

* Industrial Dominance: Sourcing has shifted toward industrial scales where hardware efficiency is the primary differentiator JsbitAsicminershopforall.

* Profitability Threshold: For the S21 to remain profitable in 2026, electricity costs must generally stay below $0.08/kWh JsbitCompassmining. At $0.05/kWh, an S21 unit can net approximately $2.60–$3.50 daily Jsbit.

* Pricing Resilience: New unit prices range from $5,000 to $6,500, while a secondary market for refurbished units stays active at $3,800 to $5,000 Asicminershopforall.

* Trend Momentum: Search interest and market activity for the S21 saw a significant peak in April 2026, reflecting its continued relevance post-halving cycles.

Detailed product options and supplier listings are available in the attached files.