Antminer S21 Pro (245TH/s) vs CK6 (19.3TH/s)
Compare pricing, hashrate, power draw, efficiency, ROI, and estimated hosted profitability before choosing your next mining setup.
Option 1
Antminer S21 Pro (245TH/s)
Option 2
CK6 (19.3TH/s)
Antminer S21 Pro (245TH/s) leads this comparison
Antminer S21 Pro (245TH/s) comes out ahead on more buyer-facing signals here. CK6 (19.3TH/s) can still be the better fit when budget, availability, or a specific mining setup matters more.
Profit estimates use currently available product data and a hosted electricity rate of $0.060/kWh.
Technical comparison
Side-by-side mining, operating, and commercial specs.
| Feature | Antminer S21 Pro (245TH/s) | CK6 (19.3TH/s) | Advantage |
|---|---|---|---|
| Brand | Antminer | Goldshell | Contextual |
| Model | S21 | CK6 | Contextual |
| Hashrate | 245 TH/s Best | 19.3 TH/s | Antminer S21 Pro (245TH/s) |
| Power Consumption | 3510W | 3300W Best | CK6 (19.3TH/s) |
| Efficiency | 14.33 J/TH Best | 170.98 J/TH | Antminer S21 Pro (245TH/s) |
| Daily energy use | 84.2 kWh | 79.2 kWh Best | CK6 (19.3TH/s) |
| Net Daily Profit (Est.) | $3.28 Best | -$3.31 | Antminer S21 Pro (245TH/s) |
| Monthly Profit (Est.) | $98.27 Best | -$99.36 | Antminer S21 Pro (245TH/s) |
| Price | $2,242.48 | N/A | Contextual |
| Estimated ROI | 22 mo | N/A | Contextual |
| Cooling | AIR | AIR | Contextual |
| Dimensions | 400 x 290 x 195 mm | 264 x 290 x 200 mm | Contextual |
| Weight | N/A | 8500 g | Contextual |
Performance
Antminer S21 Pro (245TH/s) has the hashrate edge for raw output potential.
Efficiency
Antminer S21 Pro (245TH/s) is stronger when comparing joules per hash unit.
Buying decision
Check live stock, delivery schedule, and hosting capacity on the product page before placing an order.
Frequently asked questions
Which is more powerful: Antminer S21 Pro (245TH/s) or CK6 (19.3TH/s)?
Antminer S21 Pro (245TH/s) has a higher hashrate of 245 TH/s compared to CK6 (19.3TH/s)'s 19.3 TH/s.
Is Antminer S21 Pro (245TH/s) more efficient than CK6 (19.3TH/s)?
Yes, Antminer S21 Pro (245TH/s) is more energy efficient at 14.33 J/TH.
Which miner has the better estimated ROI?
Estimated ROI is not available because one of the miners is missing current pricing or profit data.
Every Day You Wait is Revenue You Lose
Curious? Let’s connect to answer your questions.