MAX mode24/7 mining
- Est. output / day
- 0.000123 BTC
- ≈ fiat at your price
- $9.62
- Rate / kWh
- $0.075 → from $0.060
- Electricity / day
- $6.61 → from $5.29
- New from the factory — never used
- Burned in by our engineers before launch
- Serial-tracked to your account
- In our racks
- New from the factory
Antminer S21 PRO
The Antminer S21 Pro (S21Pro, S21 Pro 245T) by Bitmain. Mining for you as soon as tomorrow — and everything it mines settles toward your own wallet.From click to first settlement
- Today
You pick, we handle the rest
Checkout takes minutes — cards, PayPal or crypto. No setup, no cables, no noise in your life. - As soon as tomorrow
It starts hashing
Cloud allocation goes live in ~24 h; a Hosting unit follows its delivery window. Watch it all on the dashboard: hash rate, mode, output — live. - Then, daily
Rewards head your way
The pool settles on its daily cycle toward a wallet only you control. Electricity bills from your prepaid balance.
The four numbers that matter
- 245 TH/sHash rate — the workforce
- 15 J/THEfficiency — modern silicon class
- 0.000123 BTCEst. output / day, before fees & power
- 3.7 kWPower draw — billed daily as electricity
Stress-test it yourself
No forecasts from us — you set the Bitcoin price, the machine shows its math in both modes at once. The green flag is the story: watch how far the ECO line sits below the MAX line.$78 000
ECO line$32 195
MAX line$53 658
Comfortably above the power bill on both modes. MAX for pace, ECO for margin.The Cuverse switch
The survival lines: on MAX this machine out-mines its bill while BTC stays above ≈ $53 658; in ECO windows the line drops to ≈ $32 195 — the same machine, staying sensible 40% deeper into a rough market. On flat-rate hosting there is no second line — below the MAX line the only lever is the off button. Here, the same machine slides into ECO windows and keeps stacking. The switch is one tap on your dashboard.ECO modeCheap-energy windows
- Est. output / day
- 0.000074 BTC
- ≈ fiat at your price
- $5.77
- Rate / kWh
- $0.045 → from $0.040
- Electricity / day
- $2.38 → from $2.1
The commercial terms, at a glance
- Payment
- 100% at checkout — cards, PayPal, or crypto. No card details ever touch Cuverse.
- Electricity
- Billed daily from your prepaid balance, rate shown at checkout. Loyalty returns up to 20%.
- Warranty & repairs
- Cloud: parts & labour included, full 36 months. Hosting: 12-month warranty (+12/+24 at checkout); out-of-warranty repairs billed.
- Delivery (Hosting)
- Saver ground ≈ 45–60 days, included · Express air ≈ 20–30 days, +$149/unit. Cloud: nothing ships.
- Import duties
- Machines ship to our data centers, not your door — import formalities stay on our side of the rack.
- End of term
- Extend · trade in · sell back · take it home. It never becomes ours.
Papered properly
No handshakes: every purchase comes with its paper trail, start to finish.- A written agreement per purchase — full Hong Kong legal entity details inside
- Invoice and payment receipt at checkout, whatever the payment method
- The machine is assigned to your account — serial-tracked on Hosting
- Every document lives in your dashboard, downloadable anytime
The same box, two very different lives
| A marketplace box | The same machine, here | |
|---|---|---|
| Getting started | Customs, freight, 3-phase power, 75 dB in your space | Racked and hashing as soon as tomorrow — you click, we do the physical part |
| If it breaks | RMA shipping across the world, weeks offline | Repaired meters from the rack by on-site engineers |
| Running cost | Residential electricity, your cooling problem | Industrial-rate power, MAX & ECO modes, cashback up to 20% |
| Your Bitcoin | Depends on your setup | Pool settles toward a wallet only you control — structurally non-custodial |
The market moves. The machine keeps up.
Mining gets more competitive every year — here's what's already built in, so you don't have to think about it.- Curated silicon
We stock only what lasts
The racks carry the modern efficiency class — machines chosen to stay relevant, not to fill a shelf. The choosing is our job. - The ECO switch
Two economies in one box
Conditions tighten? One tap moves the machine into cheap-energy windows and keeps it working — the stress-test above shows how much room that buys. - The trade-in doorway
Upgrades are built into the term
When the next generation lands, trade in toward it — your machine's value rolls forward instead of aging in place.
Not this one?
- Smaller budget
- Est. output / day
- 0.00005874 BTC
- Smaller budget
- Est. output / day
- 0.00008999 BTC
- The flagship
- Est. output / day
- 0.00011249 BTC
Everything that comes with it — in plain words
- How the money flows
Your Bitcoin never sits with us
The mining pool settles toward a wallet only you control — save the address once, withdraw on your schedule. We hold no keys and no coins; that's the architecture, not a policy. - The full mode math
MAX & ECO — two machines in one
MAX runs 24/7 at the standard rate; ECO mines only in cheap-energy windows at a lower rate. You switch anytime from the dashboard — the stress-test above shows exactly what each mode means at any price. - Mining pools
Pools: presets, or bring your own
F2Pool by default, ViaBTC and Antpool one click away — or point the machine at your own pool with Custom Pool. Your machine, your economics, your call. - How uptime is protected
Protected while it runs
24/7 telemetry watches every board; on-site engineers respond in minutes, not shipping weeks. Repairs happen meters from the rack, under warranty. - The loyalty program
Loyalty: the longer you mine, the less power costs
Five tiers recalculated daily; cashback lands as points (1 point = $1) and points pay the same bills they came from, or go toward your next machine. Up to 20% back at the top. - Hosting vs Cloud
The term is a doorway, not a wall
At the end: extend, trade in toward a newer model, sell back (case by case, at then-current market terms), or take the machine home. Do nothing and it waits in storage — it never becomes ours.
For the curious
Full specifications — Antminer S21 PRO
- Hash rate
- 245 TH/s
- Efficiency
- 15 J/TH
- Power consumption
- ≈ 3,675 W
- Algorithm / network
- SHA-256 · Bitcoin
- Cooling
- Air, dual fan
- Noise level
- ≈ 75 dB — data-center territory, not living-room
- Release
- 2024, Bitmain
- Mining pools
- F2Pool (default) · ViaBTC · Antpool · or your own via Custom Pool
- Runs in
- Cuverse data centers — 5 sites, 5 continents
Our take: Antminer S21 Pro vs S21+ vs S21 XP
The step between the workhorse and the flagship: more terahash per watt than the S21+, without the XP's price tag. The S21 Pro is for the buyer who has decided on the modern efficiency class and wants a little more of it.
Against its neighbours: the Antminer S21+ is cheaper per machine and nearly as efficient; the Antminer S21 XP goes further on both counts at a visibly higher ticket. The S21 Pro sits in the middle on purpose.
In our racks it runs on data-center power and cooling, switches between MAX and ECO from your dashboard, and settles everything it mines toward a wallet only you control — from as soon as tomorrow.
Fair questions about the Antminer S21 PRO
- Speed vs. specificity. Cloud: allocated from the live fleet, hashing in ~24 h, 36-month term, parts & labour covered throughout, nothing ships. Hosting: a new unit of exactly this model, delivered to our data center by air (≈ 20–30 days) or ground (≈ 45–60) and racked under your name — or, if it's in our racks already, hashing in ~24 h; 12-month term, warranty extendable, take it home at the end if you like. Same dashboard either way.
- It draws about 3.67 kW — roughly 88 kWh a day. At the standard MAX rate of $0.075/kWh that's ≈ $6.61 a day, about $202 a month — electricity, hosting and maintenance all in that one number, billed daily from your prepaid balance. On ECO (cheap-energy hours, $0.045/kWh) it's ≈ $2.38 a day, about $73 a month. The exact rate for your region shows at checkout; the stress-test puts this draw side by side with the machine's output.
- The machine keeps mining Bitcoin either way — what changes is the fiat math. You hold the levers: switch to ECO to cut the power bill, keep stacking through the dip, or pause and decide. The stress-test shows exactly where each mode stands at any price. No promises — just controls.
- About 75 dB — a vacuum cleaner that never stops, which is why it lives in a data center and not your hallway. You see everything that matters on the live dashboard: hash rate, output, mode, telemetry.
- Your call, four ways: extend, trade in toward a newer model, sell back (case by case, at then-current market terms), or take it home. Do nothing and it waits in storage — it never becomes ours.
- Per terahash the Pro is about 10% more efficient; per machine it costs about 40% more. Buying one unit, the + usually wins; optimizing watts per terahash across several, the Pro starts to make sense.
Tomorrow, it could be hashing for you
New from the factory, racked by our engineers, settling toward your own wallet.Disclaimer. Prices, variant availability, delivery options, and rates are as of the page date — current listings at checkout prevail. Estimated output assumes the stated hash rates at a network reward of about 0.0000005 BTC per TH per day, before pool fees and electricity; network difficulty and the Bitcoin price change continuously. The stress-test is a what-if tool under the reader's control and is not a forecast, projection, or promise of any result; the difficulty chart is an indicative historical shape (live data on the production page) and implies nothing about the future. ECO-mode modelling assumes ~60% duty at the ECO rate; actual windows vary by site and season. Delivery windows are estimated transit times, carrier-dependent. Warranty extension pricing is indicative pending final rates. Specifications are from the manufacturer's datasheet, may vary by batch, and marked figures require verification before publication. Warranty, end-of-term options (buyback case by case at then-current market terms), loyalty, and trial terms are governed by the applicable documents. Nothing here is an offer, financial advice, or a promise of any result.