ASIC Miner Comparison 2026 – ROI & Prices from €289
Which ASIC actually pays off? Antminer S21, S19k Pro, T21 and Avalon compared side by side: hashrate, J/TH, price and ROI in days. All models from German stock.
How to read this comparison
Never compare ASIC miners by hashrate alone. Three figures decide: efficiency in J/TH drives running cost, price per terahash (purchase price divided by TH/s) drives capital tied up, and connected load decides whether you can run the machine at all. A unit can lead on one metric and fail on another.
The table below lists the currently available models with hashrate, power draw, efficiency and price so you can compute both ratios yourself.
Which class at which electricity price
With very cheap power up to about 12 ct/kWh, price per terahash dominates: older units at 29–40 J/TH pay back fastest because little capital is tied up. Between 12 and 22 ct/kWh the sensible range is 19–23 J/TH, i.e. S19k Pro or T21. Above 25 ct/kWh only current hardware below 18 J/TH such as S21 and S21+ works, or a concept built around heat reuse.
Also calculate the break-even tariff per model: the price at which electricity exceeds daily revenue. If your tariff is close to it, you have no buffer for rising difficulty.
Calculating ROI honestly
A dependable ROI estimate needs four inputs: purchase price, daily revenue at current difficulty, daily electricity cost and a discount for rising difficulty. Without the last one every calculation is too optimistic. We plan with an annual revenue decline and check whether the unit still returns within an acceptable period.
Our mining calculator does this for you — enter hashrate, consumption and your electricity price for daily, monthly and yearly figures.
Models, prices and efficiency at a glance
| Model | Hashrate | Power | Efficiency | Price | Delivery |
|---|---|---|---|---|---|
 Avalon A1246 85T | 85 TH/s | 3420W | 40.2 J/TH | €289 | 2–4 Werktage |
 Antminer S19 J Pro (Gebraucht) | 104 TH/s | 3068W | 29.5 J/TH | from €299 | 2–4 Werktage |
| Antminer S19k Pro 115 TH/s (Gebraucht) | 115 TH/s | 2645-2760W | 23 J/TH | from €419 | 2–4 Werktage |
 WhatsMiner M50s | 126 TH/s | 3276W | 26 J/TH | €1.269 | 10-14 Tage (HK) |
 Antminer Hydro Wasserkühler | 230-473 TH/s | 3500-6000W | 12-23 J/TH | from €1.369 | 10-14 Tage (HK) |
 Antminer T21 | 190 TH/s | 3610W | 19 J/TH | from €1.049 | Auf Anfrage |
| Antminer S21 | 151 TH/s | 2650W | 17.5 J/TH | €1.379 | 10-14 Tage (HK) |
| Antminer S21+ | 216 TH/s | 3564W | 16.5 J/TH | €2.149 | 10-14 Tage (HK) |
 WhatsMiner M63s+ | 418 TH/s | 3550W | 17 J/TH | €5.319 | 10-14 Tage (HK) |
 Avalon Mini3 Heater | 37,5 TH/s | 1200W | 32 J/TH | €1.349 | 10-14 Tage (HK) |
 Avalon Q | 90 TH/s | 1674W | 18.6 J/TH | €1.899 | 10-14 Tage (HK) |
Shipping, warehouse and delivery time
Stocked units ship within 2–4 business days from our warehouse in Bavaria, Germany. Because the hardware is already imported and cleared inside the EU, there is no import VAT, no customs paperwork and no waiting for air freight from Asia. Models sourced directly from the factory show their own delivery time on the product page.
We ship insured to all 27 EU member states and Switzerland. Shipping costs: Germany €19.90, EU €29.90 – both free from €1,000 order value. EU islands €49.00. Switzerland €40.00 (import duties are paid by the recipient).
Payment, invoice and warranty
You can pay by bank transfer, credit card, PayPal, Apple Pay or cryptocurrency. Every order comes with a proper invoice showing VAT. EU business customers with a valid VAT ID are invoiced at 0 % under the reverse-charge scheme, and we can switch your session to B2B mode with net prices.
New and used miners are covered by statutory warranty under EU law. Used units are tested, cleaned and shipped with a logged hashrate; the exact scope is stated on each product page.
Advice before you buy
We help you check electricity tariff, power connection, cooling, noise and realistic payback before you order — including when the honest answer is that a machine will not pay off at your kWh price. Send us your electricity cost and the planned location and we will run the numbers with you.