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MicroBT

MicroBT WhatsMiner M66S

Model: WhatsMiner M66S

298 TH/s 5513W SHA-256 18.5 J/TH

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Genuine

Tested hardware

Worldwide

Global shipping

Support

Mining experts

Hashrate

298 TH/s

Power

5513 W

Efficiency

18.50 J/TH

Noise

50 dB

298 TH/s hydro cooled SHA-256 at 5,513W. 18.5 J/TH, 100 to 240V, 50 dB. Buy MicroBT M66S standard hydro miner. Ships from MillionMiner.

Estimated Mining Returns

Based on current BTC price & network difficulty. Indicative only.

Period Daily Weekly Monthly
Income
$12.75 $89.25 $382.50
Electricity
-$6.62 -$46.34 -$198.60
Profit
$6.13 $42.91 $183.90

Using 0.050 $/kWh · Network difficulty as of today. Estimates only.

Adjust rate in the bar above

Updated daily. Last refresh: Aug 16, 2026. Estimates at $0.08/kWh.

At a Glance Live data · August 16, 2026
Best for

Industrial-scale hydro deployments where efficiency and density beat upfront cost.

Daily profit by electricity rate
Your rate · $0.050/kWh
+$6.13 /day
ROI ~7 months
Hosted · $0.040/kWh
+$7.46 /day
ROI ~5 months
Avg US grid · $0.070/kWh
+$3.49 /day
ROI ~11 months
Home power · $0.120/kWh
−$3.13 /day
Unprofitable at this rate
Breakeven rate Profitable below $0.096/kWh
Efficiency rank #69 of 145 SHA-256 miners in our catalog (18.5 J/TH)
Availability Out of stock — contact for restock
Hosting compatibility ✓ Mississippi (hydro) ✓ Missouri (hydro)
Hardware specs
Hashrate 298 TH/s
Power 5,513 W
Efficiency 18.5 J/TH
Noise 50 dB
Weight 18 kg
Cooling Hydro
Buy now — from $1,200 Get hosting quote

Full Specifications

Hashrate 298 TH/s
Power Consumption 5513 W
Efficiency 18.50 J/TH
Algorithm SHA-256
Model WhatsMiner M66S
Release Year Nov 2023
Noise Level 50 dB
Dimensions 267 x 147 x 401mm
Weight 18 kg
Voltage 100-240V
Interfaces Ethernet
Operating Temp 5 - 40 °C
Humidity 5 - 95 %
Cooling Type Hydro

What's in the Box

WhatsMiner M66S
Power supply unit (PSU)
Power cables
Quick start guide

Contents may vary by batch. Exact items listed in order confirmation.

Quick Setup

1

Connect PSU to miner and plug into the outlet

2

Connect ethernet cable to your router or switch

3

Find miner IP via router admin or IP scanner tool

4

Open web interface, enter pool URL and wallet — start mining

Hydro-cooled miners require 380-415V three-phase power and a hydro cooling loop. Standard household outlets are not compatible. Contact our team for hosting options or setup guidance.

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Product Details

MicroBT Whatsminer M66S 298TH Standard Hydro Cooled SHA-256 Bitcoin Miner

One step above the M66 base. The M66S at 298 TH/s and 5,513W adds 18 TH/s over the base M66 at marginally less power. Better chips from the same manufacturing run. Same chassis, same water connections, same universal 100 to 240V single phase compatibility. The S designation in MicroBT naming means enhanced bin. M66 to M66S to M66S+ to M66S++. Each step represents higher quality chip grading. The M66S sits in the lower premium tier, above base but below the + and ++ designations. Daily electricity at $0.07 per kWh: $9.26. Monthly: $278. Water cooled at 50 dB. Single phase hydro from the M60 generation. Same closing window story as every M66 variant: the M73 series moved to 380V+. Once M66 inventory depletes, single phase MicroBT hydro disappears. Mix M66S with any other M66 bin. Same chassis, same firmware, same cooling loop. Buy whichever bin your distributor prices best per terahash. For fleet operators evaluating this model: total cost of ownership equals acquisition price plus electricity ($9.26 daily at $0.07 per kWh) over your planned deployment horizon. Compare against every alternative at similar Bitcoin hashrate. The model delivering more coins per dollar of total investment at your electricity rate is the correct purchase. At 298 TH/s, the WhatsMiner M66S contributes to the Bitcoin network alongside hardware from every manufacturer worldwide. at 298 TH/s, the WhatsMiner M66S competes for a shrinking share of fixed block rewards as global hashrate expands with every new hardware deployment.

Whatsminer M66S 298TH Standard Hydro Bitcoin Miner

Mid low bin in MicroBT's M66 universal voltage hydro. 298 TH/s at 5,513W on 100 to 240V. Between M66 base (280 TH/s) and M66S+ (318 TH/s). Same chassis and water connections. Single phase hydro Bitcoin mining. Hydro cooled at 50 dB. Bitcoin, Bitcoin Cash, all SHA 256. MicroBT firmware. 267 x 147 x 401mm at 18.0 kg. Ethernet. 5 - 40 °C. Moderate 50 dB works in dedicated rooms without specialized isolation. MicroBT firmware for pool configuration and monitoring. Evaluate pricing against competing models. Total deployed hashrate determines total coins mined. Moderate 50 dB means a dedicated room absorbs the sound. Home offices, basements, garages work. Not disruptive through walls. MicroBT firmware for management. Evaluate pricing against competing models at this hashrate tier. Total fleet hashrate determines coins mined.

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Whatsminer M66S 298TH Hydro BTC Miner

Moderate noise SHA-256. 298 TH/s from MicroBT at 5513W and 50 dB. 100-240V. 18.0 kg. Bitcoin, Bitcoin Cash, all SHA 256. Ethernet. MicroBT. Compare pricing. Total cost of ownership determines value at your electricity rate. Factor acquisition and deployment duration. Model profitability at your electricity rate. MicroBT firmware and support ecosystem. Compare with competing models at this tier. Evaluate acquisition cost plus daily electricity over deployment period.

298 TH/s M66S Standard Hydro

Improved efficiency over the base M66. Universal voltage hydro Bitcoin mining.

18.5 J/TH Efficiency

Better silicon binning delivers more hashrate per watt on universal 100 to 240V.

Free DDP from MillionMiner

Ships worldwide with MicroBT warranty and free DDP delivery.

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FAQ

Frequently Asked Questions

298 TH/s SHA-256 at 5513.00W. Bitcoin miner from MicroBT.

All SHA-256 cryptocurrencies: Bitcoin (BTC), Bitcoin Cash (BCH), BSV, eCash (XEC).

Yes. Free worldwide DDP shipping to 50+ countries. Genuine hardware with warranty.

Yes. Professional Bitcoin miner hosting from $0.055/kWh with 99.9% uptime and 24/7 monitoring.

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