Description
MicroBT Whatsminer M31S+ 78TH/s Bitcoin Miner
The MicroBT Whatsminer M31S+ is a SHA-256 ASIC miner designed for Bitcoin and other compatible cryptocurrency mining. Delivering a maximum hashrate of 78TH/s with approximately 3220W power consumption, this air-cooled mining machine is suitable for dedicated mining rooms, hosting facilities and professional cryptocurrency mining farms.
The MicroBT Whatsminer M31S+ combines Ethernet connectivity, dual-fan cooling and proven MicroBT mining architecture. It is designed for continuous operation in environments with stable electrical infrastructure, reliable internet access and sufficient ventilation.
Before buying the MicroBT Whatsminer M31S+, miners should compare its purchase price with electricity rates, Bitcoin market conditions, mining difficulty, pool fees, cooling expenses, shipping costs and expected hardware lifespan. Cryptocurrency mining returns change frequently, so projected earnings should always be treated as estimates.
Explore more ASIC miners, browse our selection of Bitcoin miners, or read our guide to the best ASIC miners for Bitcoin mining.
MicroBT Whatsminer M31S+ Overview
The MicroBT Whatsminer M31S+ is an established SHA-256 mining machine intended for operators seeking straightforward Bitcoin mining performance. Its advertised 78TH/s hashrate allows it to contribute significant computing power to a compatible mining pool.
The machine was released in December 2020 and is also commonly identified as the M31S Plus. Its 3220W power requirement produces an estimated energy efficiency of approximately 41.3 joules per terahash.
Because the MicroBT Whatsminer M31S+ is an older-generation ASIC miner, buyers should compare it with newer machines before ordering. Newer mining hardware may provide stronger efficiency, but the M31S+ may still be useful where electricity is inexpensive and the acquisition cost is competitive.
This miner is not a quiet desktop device. Its power draw, heat output and approximately 70dB operating noise make it better suited to a garage, mining room, warehouse or professional hosting facility.
MicroBT Whatsminer M31S+ Specifications
| Manufacturer | MicroBT |
|---|---|
| Model | Whatsminer M31S+ |
| Also Known As | M31S Plus |
| Mining Algorithm | SHA-256 |
| Maximum Hashrate | 78TH/s |
| Power Consumption | Approximately 3220W |
| Estimated Efficiency | Approximately 41.3 J/TH |
| Release | December 2020 |
| Dimensions | 120 × 230 × 390mm |
| Weight | Approximately 11.5kg |
| Cooling System | Air cooling |
| Cooling Fans | 2 |
| Reported Noise Level | Approximately 70dB |
| Network Interface | Ethernet |
| Operating Temperature | 5°C to 35°C |
| Operating Humidity | 5% to 95% |
| Primary Mineable Coin | Bitcoin |
Actual hashrate, power draw, temperature and noise may vary according to firmware, power quality, ambient conditions, miner condition and operating configuration.
MicroBT Whatsminer M31S+ Mining Performance
The MicroBT Whatsminer M31S+ delivers a maximum advertised hashrate of 78TH/s on the SHA-256 algorithm. Hashrate measures the number of cryptographic mining calculations the machine performs every second.
Most operators connect the miner to a Bitcoin mining pool rather than attempting to mine independently. A mining pool combines the hashrate of many machines and distributes rewards according to each participant’s valid contributed work.
Mining pool selection can influence:
- Pool fees
- Payout frequency
- Rejected-share percentages
- Minimum payout requirements
- Server latency
- Connection stability
- Payment structure
Stable performance requires regular monitoring of average hashrate, pool status, board temperatures, fan speed and rejected shares. Unexpected changes may indicate restricted airflow, unstable electricity, network problems or failing components.
Power Consumption and Energy Efficiency
The MicroBT Whatsminer M31S+ consumes approximately 3220W during operation. This equals 3.22 kilowatts of continuous electrical demand.
When running continuously for 24 hours:
3.22kW × 24 hours = 77.28kWh per day
At an electricity rate of $0.10 per kWh:
77.28kWh × $0.10 = approximately $7.73 per day
| Electricity Rate | Estimated Daily Cost | Estimated 30-Day Cost |
|---|---|---|
| $0.05 per kWh | $3.86 | $115.92 |
| $0.08 per kWh | $6.18 | $185.47 |
| $0.10 per kWh | $7.73 | $231.84 |
| $0.12 per kWh | $9.27 | $278.21 |
| $0.15 per kWh | $11.59 | $347.76 |
These estimates cover only the miner’s stated power draw. They do not include ventilation, air conditioning, transformers, network equipment, mining pool fees, professional hosting or electrical conversion losses.
Based on 3220W and 78TH/s, the estimated efficiency of the MicroBT Whatsminer M31S+ is approximately 41.3 J/TH. Lower J/TH values generally indicate more efficient mining hardware.
MicroBT Whatsminer M31S+ Profitability
MicroBT Whatsminer M31S+ profitability depends on current Bitcoin mining revenue and total operating expenses. The miner does not produce a guaranteed daily return because Bitcoin price, network difficulty, transaction fees and global network hashrate change over time.
Important profitability factors include:
- Bitcoin price: The BTC market value affects the fiat value of mining rewards.
- Mining difficulty: Rising difficulty can reduce the amount earned by the same 78TH/s hashrate.
- Electricity price: Power is usually the largest recurring mining expense.
- Mining pool fees: Pool charges reduce gross revenue.
- Cooling costs: Ventilation and climate-control systems use additional electricity.
- Hosting expenses: Professional facilities may charge monthly or per-kWh rates.
- Hardware price: Purchase cost affects the estimated payback period.
- Uptime: Downtime reduces the amount of valid work submitted to the mining pool.
- Maintenance: Fans, power supplies and hashboards may require repair or replacement.
To estimate net mining income, subtract daily electricity, pool, cooling, hosting and maintenance costs from expected daily mining revenue. The hardware purchase price can then be divided by estimated daily net income to calculate a basic payback period.
Any ROI calculation for the MicroBT Whatsminer M31S+ should be treated as a changing projection rather than a promise of future income.
Review live Bitcoin pricing through CoinMarketCap, examine Bitcoin network activity through Mempool.space, and compare mining estimates with WhatToMine.
What Coins Can the MicroBT Whatsminer M31S+ Mine?
The MicroBT Whatsminer M31S+ uses the SHA-256 mining algorithm. It is mainly designed for Bitcoin but can technically process other compatible SHA-256 proof-of-work cryptocurrencies.
- Bitcoin (BTC)
- Bitcoin Cash (BCH)
- Bitcoin SV (BSV)
- Other compatible SHA-256 cryptocurrencies
Algorithm compatibility does not automatically guarantee profitability. Before selecting a cryptocurrency, miners should compare network difficulty, market liquidity, pool availability, expected rewards and withdrawal conditions.
MicroBT Whatsminer M31S+ Setup and Installation
The MicroBT Whatsminer M31S+ requires suitable electrical infrastructure and should not be connected to an ordinary household circuit unless the wiring, outlet, breaker and power-distribution equipment are rated for the continuous load.
- Inspect the machine: Check the casing, fans, connectors and cables for visible damage.
- Prepare the power connection: Confirm that the electrical circuit can safely support continuous operation.
- Connect Ethernet: Attach the miner to a stable wired network.
- Position the machine: Keep the intake and exhaust free from walls, boxes and loose cables.
- Locate the IP address: Use the recommended network-discovery method.
- Open the control panel: Enter the local IP address in a web browser.
- Add mining pool details: Enter the pool URL, worker name and password.
- Save the settings: Allow the miner to connect and begin hashing.
- Monitor startup: Check hashrate, temperature, fan speed and pool status.
For manufacturer documentation, firmware information and technical guidance, visit the official Whatsminer Support Center.
Cooling, Heat and Noise Management
The MicroBT Whatsminer M31S+ uses two high-speed fans to move air across its internal mining boards. Effective ventilation is essential because most of the electricity used by the machine is converted into heat.
With a reported noise level of approximately 70dB, the machine is generally unsuitable for bedrooms, offices and shared living spaces. A dedicated mining room, ventilated garage, warehouse or hosting facility is more appropriate.
Recommended cooling practices include:
- Providing unrestricted cool-air intake
- Directing hot exhaust away from the miner
- Preventing exhaust air from returning to the intake
- Operating within the recommended temperature range
- Monitoring environmental humidity
- Keeping ventilation paths free from dust
- Inspecting both cooling fans regularly
- Using alerts for overheating and hashrate loss
Do not install the miner inside a sealed soundproof enclosure without professionally engineered airflow. Restricted ventilation can cause overheating, instability and premature component failure.
MicroBT Whatsminer M31S+ Maintenance
Routine maintenance helps the MicroBT Whatsminer M31S+ maintain stable hashrate and avoid preventable downtime.
- Monitor daily hashrate and rejected shares
- Check board and chip temperatures
- Inspect fan speed and unusual vibration
- Keep air intake and exhaust paths clear
- Remove dust using safe, approved methods
- Inspect Ethernet and power connections
- Use compatible firmware only
- Review system logs for recurring errors
- Investigate reduced hashrate promptly
- Keep the mining area dry and clean
The miner should be shut down safely before physical cleaning or inspection. Repairs involving the power supply, controller or hashboards should be completed by qualified technicians.
MicroBT Whatsminer M31S+ vs Other Whatsminers
The MicroBT Whatsminer M31S+ offers established 78TH/s mining performance, but newer MicroBT models generally provide stronger hashrates and improved energy efficiency.
Miners comparing alternative MicroBT hardware can review:
The best option depends on electricity cost, hardware price, cooling capacity, hosting limitations and expected operating life.
Who Should Consider the MicroBT Whatsminer M31S+?
The MicroBT Whatsminer M31S+ is most appropriate for operators who understand ASIC mining requirements and have access to suitable electricity, ventilation and network infrastructure.
- Bitcoin miners with affordable electricity
- Operators expanding an existing SHA-256 mining setup
- Buyers comparing lower-cost older-generation ASIC miners
- Professional mining-hosting customers
- Facilities with adequate ventilation and electrical capacity
- Operators who can manage industrial heat and noise
It may not be suitable for casual home users who require quiet equipment or have access only to ordinary residential electrical infrastructure.
Frequently Asked Questions
What is the MicroBT Whatsminer M31S+ hashrate?
The MicroBT Whatsminer M31S+ delivers a maximum advertised hashrate of 78TH/s on the SHA-256 algorithm.
How much power does the MicroBT Whatsminer M31S+ use?
The miner consumes approximately 3220W. At continuous 24-hour operation, this equals approximately 77.28kWh per day.
What is the efficiency of the MicroBT Whatsminer M31S+?
Its estimated efficiency is approximately 41.3 J/TH, based on 3220W power consumption and 78TH/s hashrate.
Can the MicroBT Whatsminer M31S+ mine Bitcoin?
Yes. The machine uses SHA-256 and is primarily designed for Bitcoin mining.
Is the MicroBT Whatsminer M31S+ profitable?
Profitability depends on Bitcoin price, mining difficulty, electricity cost, pool fees, cooling expenses, uptime and the hardware purchase price.
Is the MicroBT Whatsminer M31S+ suitable for home mining?
It is generally unsuitable for normal living spaces because it consumes approximately 3220W, generates substantial heat and produces around 70dB of noise.
Does the miner support Wi-Fi?
The standard network interface is Ethernet. A stable wired connection is recommended for continuous mining.
How much electricity does it use per month?
At 3220W and continuous operation, the miner consumes approximately 2,318.4kWh over 30 days.
How many cooling fans does it have?
The MicroBT Whatsminer M31S+ uses two high-speed cooling fans.
Where can I buy a MicroBT Whatsminer M31S+?
You can contact Hash Titans to request current price, availability, product condition, shipping details and purchase support.
Request MicroBT Whatsminer M31S+ Price and Availability
Before ordering, confirm the rated hashrate, power consumption, included power supply, voltage requirement, warranty status, machine condition, shipping cost and expected delivery schedule.
Request MicroBT Whatsminer M31S+ Pricing
MicroBT Whatsminer M31S+ 78TH/s Bitcoin ASIC Miner
MicroBT Whatsminer M31S+ Product Summary
The MicroBT Whatsminer M31S+ is a 78TH/s SHA-256 Bitcoin miner with approximately 3220W power consumption and estimated efficiency of 41.3 J/TH. It is designed for dedicated mining locations with stable electricity, Ethernet connectivity and effective ventilation.
Before purchasing this machine, compare expected Bitcoin revenue against electricity, pool, cooling, hosting, maintenance and hardware expenses. Cryptocurrency mining returns are variable and should not be treated as guaranteed income.
Contact Hash Titans for the current MicroBT Whatsminer M31S+ price and availability.
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