Antminer KS5 21T

Antminer KS5 21T – Efficient kHeavyHash Mining for Professional Kaspa Operations

The Antminer KS5 21T by Bitmain is a professional ASIC miner built for the kHeavyHash algorithm, making it ideal for mining Kaspa (KAS) and other compatible cryptocurrencies. Designed for professional miners and industrial-scale operations, this model combines strong hashrate performance, efficient power usage, and reliable long-term operation for demanding mining environments.

With a hashrate of 21 TH/s, power consumption of 3150 W, and energy efficiency of 150 J/TH, the KS5 21T offers a strong balance between output and operating cost. It is well suited for miners who want dependable Kaspa mining performance while maintaining stable 24/7 operation in professional setups.

Built for Stable 24/7 Mining

The Antminer KS5 21T is designed for continuous operation with an air-cooled architecture and industrial-grade thermal management. Bitmain’s support documentation lists the miner with 200–277 V AC input, 47–63 Hz frequency range, and 20 A input current, while seller listings consistently describe standard RJ45 Ethernet connectivity and operating conditions intended for professional mining farms rather than residential use.

Technical Specifications

• Hashrate: 21 TH/s ±10%
• Power consumption: 3150 W ±10%
• Energy efficiency: 150 J/TH ±10%
• Algorithm: kHeavyHash
• Supported coin: Kaspa (KAS)
• Cooling system: Air cooling
• Connectivity: RJ45 Ethernet 10/100M
• Input voltage: 200–277 V AC
• Input frequency: 47–63 Hz
• Input current: 20 A
• Dimensions: approx. 430 × 195 × 290 mm
• Net weight: approx. 15.8–16.1 kg, depending on seller listing format
• Operating temperature: approx. 0–40°C or 5–45°C, depending on source formatting

Key Benefits

• Strong 21 TH/s performance for competitive Kaspa mining
• Efficient 150 J/TH operation for better power planning
• Stable 24/7 mining performance in professional environments
• Reliable Bitmain hardware with proven air-cooled design
• Straightforward integration into existing mining farm infrastructure

Who Is the Antminer KS5 21T For?

The Antminer KS5 21T is ideal for:

• Professional Kaspa miners
• Mining farms expanding kHeavyHash capacity
• Operators seeking reliable air-cooled ASIC hardware
• Investors looking for stable long-term mining performance in the Kaspa ecosystem

The Antminer KS5 21T is a practical solution for miners who want dependable kHeavyHash performance, competitive efficiency, and hardware that fits easily into professional mining operations.