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Jasminer

Jasminer X4-QZ Jasminer X4 3U Z

Model: X4-QZ

840 MH/s 340W Ethash 0.4 J/TH

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Genuine

Tested hardware

Worldwide

Global shipping

Support

Mining experts

Hashrate

840 MH/s

Power

340 W

Efficiency

0.40 J/MH

Noise

40 dB

840 MH/s Ethash miner at 340W. 40 dB quiet, 100 to 240V. Jasminer's ultra efficient quiet ETC device. Ships from MillionMiner with warranty.

Estimated Mining Returns

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

Period Daily Weekly Monthly
Income
$0.00 $0.00 $0.00
Electricity
-$0.41 -$2.87 -$12.30
Profit
$-0.41 $-2.87 $-12.30

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

Adjust rate in the bar above

Updated daily. Last refresh: Jul 18, 2026. Estimates at $0.08/kWh.

At a Glance Live data · July 18, 2026
Best for

Home or small-office mining where noise and power matter more than raw output.

Daily profit by electricity rate
Your rate · $0.050/kWh
−$0.41 /day
Unprofitable at this rate
Hosted · $0.040/kWh
−$0.33 /day
Unprofitable at this rate
Avg US grid · $0.070/kWh
−$0.57 /day
Unprofitable at this rate
Home power · $0.120/kWh
−$0.98 /day
Unprofitable at this rate
Efficiency rank #5 of 11 Ethash miners in our catalog (0.4 J/MH)
Availability Out of stock — contact for restock
Hosting compatibility ✓ All US facilities (air)
Hardware specs
Hashrate 840 MH/s
Power 340 W
Efficiency 0.4 J/MH
Noise 40 dB
Weight 12 kg
Cooling Air
Buy now — from $1,600 Get hosting quote

Full Specifications

Hashrate 840 MH/s
Power Consumption 340 W
Efficiency 0.40 J/MH
Algorithm Ethash
Model X4-QZ
Release Year Mar 2023
Noise Level 40 dB
Dimensions 450 x 350 x 132mm
Weight 12 kg
Voltage 100-240V
Interfaces Ethernet
Operating Temp 5 - 40 °C
Humidity 5 - 65 %
Cooling Type Air

What's in the Box

X4-QZ
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

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Product Details

Jasminer X4-QZ 840MH Ultra Efficient Quiet Ethash Miner for Ethereum Classic

Older Jasminer quiet Ethash at a hashrate that still holds relevance. The X4-QZ at 840 MH/s and 340W runs 40 dB in a compact 3U rack mountable form factor. This is the X4 generation, predecessor to the X16-Q series (1.75 to 2.05 GH/s). Less output but also less power. Rack mountable is an unusual feature for a 40 dB home tier device. The 3U form factor means the X4-QZ can slot into a standard server rack alongside other equipment. For operators who want organized, rack based ETC mining at home quiet noise levels, this is one of very few options that fits standard 19 inch rails. 340W on universal 100 to 240V. At 110V draws about 3.1 amps. Standard outlets handle it easily. Daily electricity at $0.07 per kWh: $0.57. Monthly: $17. The X4-QZ undercuts the newer X16-Q series on operating cost at the expense of lower total output. The X4 series includes: X4 Brick (65 MH/s, 30W, novelty), X4-QZ (840 MH/s, 340W, this model), X4-C 1U (450 MH/s, 240W, rack), X4-1U (520 MH/s, 240W, rack), and X4 (2.5 GH/s, 1,200W, industrial). The QZ hits the sweet spot of quiet and productive. 450 x 350 x 132mm at 12.0 kg. 100-240V input. Ethernet. 5 - 40 °C. Jasminer firmware for pool configuration. Daily electricity at $0.07 per kWh: $0.57. Monthly: $17. Compare against Ethereum Classic mining revenue at 840 MH/s and current difficulty before purchasing. Before purchasing the X4-QZ: verify current Ethereum Classic mining revenue at 840 MH/s exceeds $0.57 daily electricity. when daily revenue exceeds $0.57 in electricity, the X4-QZ is generating net value. mining at a loss is a bet that Ethereum Classic tokens mined cheaply today are worth more tomorrow.

Jasminer X4-QZ 840MH Ultra Efficient Quiet ETC Miner

Jasminer X4-QZ at 840 MH/s Ethash and 340W at 40 dB. Compact 3U rack mountable ETC miner. Older Jasminer generation below the X16 series. Low power quiet Ethash accumulation. Universal 100 to 240V. Air cooled at 40 dB. Ethereum Classic and Ethash coins. Jasminer firmware. 450 x 350 x 132mm at 12.0 kg. Ethernet. 5 - 40 °C. Silent 40 dB operation. Any room. Focus on power and connectivity only. Jasminer firmware for pool configuration and monitoring. Compare pricing against competing models at this tier. Total fleet hashrate determines coins mined. Model conservatively. Silent 40 dB enables any room deployment. No noise constraint. Focus on power capacity and connectivity. The quietest mining experience available at this output tier. Jasminer firmware for pool management and monitoring. Compare pricing against alternatives. Total deployed hashrate determines production.

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Jasminer X4-QZ 840MH ETC Miner

40 dB silent Ethash. 840 MH/s from Jasminer at 340W. 100-240V. 12.0 kg. Ethereum Classic and Ethash coins. Ethernet. Jasminer. Jasminer. Compare pricing. Total cost of ownership at your rate. Factor acquisition and deployment duration. Model profitability at your rate. Jasminer firmware. Compare with competing models for fleet value. Factor acquisition and electricity over deployment. Dedicated Ethash ASIC silicon for maximum efficiency.

840 MH/s at 340W

Ultra efficient Ethash mining. One of the lowest power ETC miners available.

40 dB Quiet Efficient

Low noise, low power, universal voltage. Deploy wherever efficiency matters most.

Free DDP from MillionMiner

Ships worldwide with warranty and free DDP delivery.

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FAQ

Frequently Asked Questions

840 MH/s Ethash at 340.00W. Mines Ethereum Classic (ETC).

Ethash coins: Ethereum Classic (ETC), Ubiq. ETH switched to PoS in 2022.

Yes. Free worldwide DDP shipping to 50+ countries.

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