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Crypto Miners Direct

Guides

Bitcoin Mining Knowledge Center

Working knowledge for people who buy, power, cool and maintain mining hardware. The arithmetic is shown, model figures come from manufacturer documentation, and nothing here forecasts earnings.

Buying

Choosing, vetting and ordering mining hardware.

  • How to Buy a Bitcoin Miner

    Set your power, noise and cooling limits, read a miner listing correctly, vet the seller, pay safely and test the machine when it arrives.

  • ASIC Miner Buying Guide

    Compare ASIC miner models on efficiency, price per TH, cooling, electrical fit and all-in cost, and know which criterion matters for your site.

  • New vs Used ASIC Miners

    Weigh price per TH against efficiency, remaining life and warranty, and learn what to check on a used lot before deciding between new and used miners.

  • How to Buy ASIC Miners Wholesale

    Run a bulk ASIC purchase from RFQ to delivery, covering quotations, spot and futures stock, MOQ, payment terms, proforma invoices and Incoterms.

  • How to Import Bitcoin Miners

    Understand who is importer of record, which documents customs needs, how duty and import tax are assessed and how to ship miners by air or sea.

  • How to Inspect and Test a Used ASIC Miner

    Inspect a used or refurbished ASIC miner on delivery, run an acceptance test under your own conditions and keep the evidence a claim needs.

  • How to Verify an ASIC Miner Seller and Avoid Scams

    Confirm that a mining hardware seller is a real company and that the payment details are its own, and know what to do when something does not match.

Economics

How revenue, electricity and efficiency determine results.

  • How Bitcoin Mining Profitability Works

    Work out what a miner can be expected to earn from its hashrate, the network difficulty, the block reward, pool fees and your power price.

  • Electricity Cost and Bitcoin Mining

    Calculate what a miner costs to run per day and per bitcoin, find your break-even power price, and compare an energy rate with an all-in rate.

  • Understanding J/TH

    Compute a miner's efficiency in J/TH, convert it to kWh and electricity cost per terahash per day, and read published figures with their tolerance.

  • Understanding $/TH

    Calculate price per terahash, combine it with J/TH to find which of two miners costs less at your power price, and see what the figure leaves out.

  • ASIC Miner ROI Explained

    Estimate payback and ROI for an ASIC miner with a model that accounts for falling revenue, and see how power price changes the result.

Hardware

Cooling methods and what machines need to last.

Electrical

Voltage, current and distribution for miners.

  • Bitcoin Miner Power Requirements

    Work out the voltage, current, circuit capacity and connectors a Bitcoin miner needs before you order it, so you can brief your electrician.

  • 220V Bitcoin Mining

    Find out whether your 208, 230 or 240 V supply suits a Bitcoin miner, how many machines one circuit can carry, and what to ask your electrician.

  • Three-Phase Mining Equipment

    Calculate three-phase current for miners, balance single-phase machines across phases, and check whether hydro units need a transformer at your site.

  • How Much Electricity Does an ASIC Miner Use?

    See how many kWh an ASIC miner uses per day, month and year, how much heat that is, and how to measure what your own machine draws.

Commercial

Planning and equipping a mining farm.

  • How to Build a Bitcoin Mining Farm

    Follow the build sequence for a mining farm, from securing power and choosing cooling to electrical design, procurement, commissioning and operations.

  • How Many Miners Fit in 1 MW?

    Calculate how many ASIC miners 1 MW supports after cooling overhead, power tolerance and headroom, with a formula and worked table you can redo.

  • ASIC Mining Container Guide

    Compare air, hydro and immersion mining containers, see what each contains, and know what to specify and ask a supplier before you order one.

  • Bitcoin Mining Farm Equipment Checklist

    Use this system-by-system checklist to specify every item a mining farm needs, with separate cooling lists for air, hydro and immersion sites.

  • Mining Farm Networking and Monitoring

    Plan the network for tens to thousands of ASIC miners and set up the monitoring, alerts and records that keep every unit connected and hashing.

Maintenance

Keeping machines hashing and diagnosing faults.

  • ASIC Miner Maintenance

    Set up a maintenance programme for ASIC miners covering what to monitor, how often to inspect and clean, firmware updates, spares and records.

  • How to Clean an Antminer

    Remove dust from an air-cooled Antminer safely with compressed air, following Bitmain's published method, and know what to avoid and how often to do it.

  • ASIC Fan Replacement

    Recognise a failing ASIC miner fan, confirm the fan is the fault, choose a matching replacement and fit it safely with the right checks afterwards.

  • Hashboard Troubleshooting

    Work through a hashboard fault in order, isolating the board from its cable, control board and power supply before deciding on repair.

  • Control Board Replacement

    Confirm that a miner's control board is the fault, identify a compatible replacement, fit it safely and bring the machine back with correct firmware.

Wholesale & project supply

Building or expanding a mining operation?

Bulk ASIC procurement for mining farms, hosting companies, resellers and institutional operators. Send model, quantity and destination; sales replies with pricing and lead time.

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