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Bitmain

Bitmain Antminer KS5 Pro 21 TH/s kHeavyHash Kaspa ASIC Miner

Model: Antminer KS5 PRO

21 TH/s 3150W KHeavyHash 150 J/TH

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Genuine

Tested hardware

Worldwide

Global shipping

Support

Mining experts

Hashrate

21 TH/s

Power

3150 W

Efficiency

150.00 J/TH

Noise

75 dB

The Bitmain Antminer KS5 Pro 21 TH/s is the top bin of Bitmain's KS5 Kaspa line and the highest-output KAS ASIC the company builds, running kHeavyHash at 21 TH/s on 3,150W for 150 J/TH efficiency. That is 1 TH/s above the standard KS5 at nearly identical efficiency, the result of chip grading packaged as a premium SKU. Air cooled at 75 dB, 16.1 kg, released March 2024 on universal 100 to 240V. MillionMiner ships it worldwide DDP with PSU and warranty.

Estimated Mining Returns

Based on current BTC price & network difficulty. Indicative only.

Period Daily Weekly Monthly
Income
$3.98 $27.86 $119.40
Electricity
-$3.78 -$26.46 -$113.40
Profit
$0.20 $1.40 $6.00

Using 0.050 $/kWh · Network difficulty as of today. Estimates only.

Adjust rate in the bar above

Updated daily. Last refresh: Jul 22, 2026. Estimates at $0.08/kWh.

At a Glance Live data · July 22, 2026
Best for

First-time miners and small farms at $0.04–$0.07/kWh hosting rates.

Daily profit by electricity rate
Your rate · $0.050/kWh
+$0.20 /day
ROI ~400 months
Hosted · $0.040/kWh
+$0.96 /day
ROI ~83 months
Avg US grid · $0.070/kWh
−$1.31 /day
Unprofitable at this rate
Home power · $0.120/kWh
−$5.09 /day
Unprofitable at this rate
Breakeven rate Profitable below $0.053/kWh
Efficiency rank #5 of 25 KHeavyHash miners in our catalog (150 J/TH)
Availability Out of stock — contact for restock
Hosting compatibility ✓ All US facilities (air)
Hardware specs
Hashrate 21 TH/s
Power 3,150 W
Efficiency 150 J/TH
Noise 75 dB
Weight 16.1 kg
Cooling Air
Buy now — from $2,400 Get hosting quote

Full Specifications

Hashrate 21 TH/s
Power Consumption 3150 W
Efficiency 150.00 J/TH
Algorithm KHeavyHash
Model Antminer KS5 PRO
Release Year Mar 2024
Noise Level 75 dB
Dimensions 195 x 290 x 430mm
Weight 16.1 kg
Voltage 100-240V
Interfaces Ethernet
Operating Temp 5 - 45 °C
Humidity 5 - 95 %
Cooling Type Air

What's in the Box

Antminer KS5 PRO
Power supply unit (PSU)
Power cables
Quick start guide

Contents may vary by batch. Exact items listed in order confirmation.

Quick Setup

1

Connect PSU to miner and plug into the outlet

2

Connect ethernet cable to your router or switch

3

Find miner IP via router admin or IP scanner tool

4

Open web interface, enter pool URL and wallet — start mining

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Product Details

Bitmain Antminer KS5 Pro 21TH Kaspa ASIC Miner for KAS Mining

Top bin of Bitmain's Kaspa entry. 21 TH/s at 3,150W versus the standard KS5 at 20 TH/s and 3,000W. Five percent more hashrate at five percent more power. The efficiency per terahash is essentially identical. The PRO exists because chip grading produced higher output dies that Bitmain packaged as a premium SKU. 21 TH/s makes the KS5 PRO the highest output Kaspa ASIC from Bitmain. Combined with the Antminer ecosystem, firmware maturity, and global support infrastructure, it represents the premium choice for professional Kaspa mining operations that already operate Bitmain fleets. Universal 100 to 240V. 75 dB. 3,150W at 220V draws about 14.3 amps. Daily electricity at $0.07 per kWh: $5.29. Monthly: $159. Marginally more than the standard KS5 ($151) for 5 percent more hashrate. The premium per unit should be modest to justify the small output gain. For fleet buyers already running Bitmain KS5: mix standard and PRO bins based on per unit pricing. Same chassis, same firmware, same everything except chip performance. Whichever bin your distributor offers cheaper per terahash is the right buy. For fleet operators evaluating this specific model: compare acquisition cost per terahash against every alternative at similar hashrate. Factor $5.29 daily electricity into total cost of ownership over your planned deployment. The model delivering more Kaspa per dollar of total investment (hardware plus electricity) over your deployment horizon is the correct purchase.

KS5 Pro 21TH Most Powerful Kaspa Miner

Top bin in Bitmain's KS5 Kaspa series. 21 TH/s at 3,150W. 1 TH/s above the standard KS5 (20 TH/s, 3,000W). Bitmain's Antminer firmware for Kaspa mining with all the ecosystem depth that brings. 75 dB at 100 to 240V. Air cooled at 75 dB. Kaspa (KAS). Bitmain firmware. 195 x 290 x 430mm at 16.1 kg. Ethernet. 5 - 45 °C. Industrial 75 dB requires dedicated mining space. Warehouses, containers, or isolated rooms. Not for shared environments. Bitmain firmware for pool configuration and monitoring. Evaluate pricing against competing models at this tier. Industrial noise at 75 dB demands purpose built mining space. Warehouses, shipping containers, dedicated rooms with sound treatment, or hosting facilities. Plan for noise management in any deployment. 3150W of heat output also requires adequate ventilation or HVAC capacity to maintain operating temperatures. Evaluate per terahash acquisition cost and daily electricity at your rate. Total fleet hashrate determines total coins mined. Model conservatively with current network data.

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KS5 Pro 21TH Kaspa Miner

Industrial KHeavyHash from Bitmain. 21 TH/s at 3150W and 75 dB on 100-240V. 16.1 kg at 195 x 290 x 430mm. Kaspa (KAS). Ethernet. Bitmain. Compare pricing. Dedicated mining space required. Total cost of ownership determines value at your electricity rate. Factor acquisition and deployment duration. Bitmain firmware for pool configuration and monitoring. Total cost of ownership determines value. Factor acquisition plus daily electricity over planned deployment.

21TH Kaspa Mining Power

The highest hashrate Kaspa ASIC miner from Bitmain, delivering 21 terahash on the kHeavyHash algorithm.

Built for BlockDAG Mining

Purpose-engineered for Kaspa's innovative BlockDAG network, one of the fastest-growing proof-of-work blockchains.

Diversify Beyond Bitcoin

A compelling mining investment for operators looking to expand into high-growth alternative proof-of-work networks.

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FAQ

Frequently Asked Questions

21 TH/s kHeavyHash at 3,150W. Slightly upgraded version of the KS5 (20 TH/s). Bitmain flagship Kaspa miner.

KS5 PRO: 21 TH/s. KS5: 20 TH/s. Marginal 5% hashrate improvement. Choose based on price and availability.

KS7: 30 TH/s at 3,500W. KS5 PRO: 21 TH/s at 3,150W. The KS7 delivers 43% more hashrate. The KS5 PRO has lower power draw.

Yes. From $0.055/kWh. Free DDP shipping.

kHeavyHash: Kaspa (KAS).

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