10 Best Mini PC For Opnsense in 2026

Selecting the right Mini PC for Opnsense is crucial for building a reliable and secure network firewall. You need hardware that supports multiple Ethernet ports and runs efficiently without excessive noise or heat generation in your home or office.

We evaluated ten top models based on processor performance, network interface quality, and overall build stability. Each device was analyzed for its ability to handle virtualization, firewall throughput, and long-term uptime requirements effectively.

This list provides detailed reviews of each unit to help you find the perfect fit. Keep in mind that stock availability and pricing can change frequently so verify current details before making your final purchase decision today.

Top 3 Picks for Best Mini PC for Opnsense

Top 10 Best Mini PC for Opnsense in 2026 Compared

The following comparison table details the key specifications and features of each selected device to help you make an informed decision.

1. BOSGAME E5 Mini PC – Best Budget Opnsense

4.6Editor scoreCheck price on Amazon

BOSGAME E5 Mini PC Ryzen 3 5300U

Ryzen 3 5300U

16GB DDR4 RAM

Dual 2.5G LAN

NVMe SSD Storage

The BOSGAME E5 Mini PC stands out as a top contender for users seeking an affordable Mini PC for Opnsense. It delivers a stable 4.6 rating by balancing performance and cost effectively for home labs.

Pros

• Dual 2.5G LAN ports for high bandwidth
• 16GB RAM is excellent for this price
• Very quiet operation for home use
• Triple 4K display support for management

Cons

• Integrated cooling fan may wear over time
• Gigabit ports not available on LAN

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Powered by the AMD Ryzen 3 5300U this unit handles firewall tasks with ease. The dual 2.5GbE LAN ports ensure your network traffic flows smoothly without bottlenecks during peak usage times.

While it uses active cooling the fan is engineered to be whisper quiet. This design choice allows it to sit in living areas without disturbing daily activities while maintaining optimal thermal performance.

This unit is ideal for budget conscious enthusiasts needing reliable throughput. Its combination of speed and storage capacity makes it a versatile choice for various server applications beyond just firewall duties.

High Speed Networking

The dual 2.5GbE ports provide significant bandwidth headroom for modern home internet connections.

Quiet Efficiency

Optimized cooling ensures the device remains silent even under sustained network processing loads.

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2. N150 Mini PC Firewall – Editor's Choice Opnsense

4.3Editor scoreCheck price on Amazon

N150 Mini PC Firewall (N100 Upgrade)

N150 12th Gen

6 x 2.5GbE LAN

DDR5 8GB RAM

Fanless Aluminum Design

The N150 Mini PC Firewall is a robust choice for advanced users requiring multiple network segments. Its Editor's Choice badge reflects its superior connectivity options for serious networking projects.

Pros

• Six LAN ports for complex routing needs
• Fanless design ensures zero noise
• DDR5 memory provides modern speed
• Integrated AES-NI for encryption

Cons

• Only 8GB RAM included standard
• Higher price than dual port units

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With six 2.5GbE LAN ports this device supports complex VLAN setups and multiple ISP connections. It also features DDR5 memory which ensures rapid data processing for heavy traffic loads.

The fanless aluminum body keeps the unit completely silent while aiding passive cooling. This design is perfect for environments where noise is a critical factor for daily operations.

Ideal for prosumers this unit offers professional grade connectivity in a compact form. It balances power and silence to provide a reliable foundation for secure network infrastructure.

Advanced Connectivity

Six network ports allow for distinct WAN and LAN segments without needing extra switches.

Zero Noise Operation

Passive cooling removes moving parts ensuring the unit stays silent forever without dust buildup.

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3. BOSGAME E5 Mini pc – Best Premium Opnsense

4.6Editor scoreCheck price on Amazon

BOSGAME E5 Mini pc

Ryzen 3 5300U

8GB DDR4 RAM

Dual 2.5G LAN

256GB SSD Storage

This BOSGAME E5 Mini pc is highlighted as a premium pick due to its consistent performance. It delivers a solid 4.6 rating by offering reliable networking features for dedicated firewall appliances.

Pros

• Strong AMD Ryzen performance
• Dual 2.5G LAN standard
• Triple display support available
• Compact design saves space

Cons

• Lower RAM than higher models
• Fan noise may increase with load

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The Ryzen 3 5300U processor ensures quick handling of packet inspection and routing. With dual 2.5GbE LAN ports you get ample speed for gigabit fiber internet without needing upgrades soon.

While the RAM is modest it is expandable for future needs. The unit also supports triple 4K displays making it useful for network monitoring dashboards alongside its firewall duties.

This unit is a strong pick for those prioritizing brand reliability. Its balance of speed and connectivity makes it a trusted option for small office home office environments.

Reliable Performance

The AMD processor handles heavy network traffic without throttling or overheating issues.

Expandable Options

Memory and storage can be upgraded to suit growing network requirements over time.

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4. MeLE Quieter DL Fanless Mini PC N150 – Reliable Opnsense

5.0Editor scoreCheck price on Amazon

MeLE Quieter DL Fanless Mini PC N150

Intel N150 Processor

16GB DDR4 RAM

Dual I226V LAN

Fanless Silent Cooling

The MeLE Quieter DL Fanless Mini PC N150 earns a perfect rating for its build quality and silent operation. It is an excellent choice for those prioritizing stability and noise levels.

Pros

• Perfect 5.0 customer rating
• Fanless design for quiet use
• Intel LAN for driver stability
• Ample RAM for virtualization

Cons

• Higher cost than active cooling units
• Limited port count compared to others

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Equipped with dual Intel I226V controllers this unit offers native driver support in Opnsense. The 16GB of RAM allows for running multiple virtual machines alongside the firewall efficiently.

Its fanless design means there are no moving parts to fail or create noise. This makes it ideal for bedrooms or quiet offices where a constant hum would be distracting.

This is a top recommendation for users needing a silent always-on appliance. Its high rating and robust specs ensure it meets professional standards for home lab environments.

Silent Reliability

The absence of a fan ensures zero acoustic noise and longer hardware lifespan.

Native Driver Support

Intel NICs are well supported in Linux based firewall systems for stability.

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5. C4 Plus Dual LAN Mini PC – Budget Friendly Opnsense

4.5Editor scoreCheck price on Amazon

C4 Plus Dual LAN Mini PC Ryzen 5 3501U

Ryzen 5 3501U

8GB DDR4 RAM

Dual Gigabit LAN

256GB SSD Storage

The C4 Plus Dual LAN Mini PC offers great value for entry level users seeking a Mini PC for Opnsense. It provides a 4.5 rating by delivering solid performance at a lower price.

Pros

• Affordable price point
• Strong Ryzen 5 performance
• Triple display support included
• Good thermal management

Cons

• Only Gigabit LAN speeds
• Storage is limited

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Powered by the Ryzen 5 3501U this unit handles multitasking with ease. It includes dual gigabit LAN ports which are sufficient for standard home internet without needing advanced networking.

It supports three displays allowing for easy monitoring of network status. The thermal design keeps the unit cool and quiet during continuous operation without excessive power draw.

This is an excellent starting point for home lab enthusiasts. It balances cost and capability to provide a reliable firewall for typical residential use cases.

Cost Effective

Provides essential networking features at a very accessible price for beginners.

Multi Display

Connect multiple monitors to view firewall logs while working on other tasks.

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6. Fanless Mini PC Industrial – Durable Opnsense

3.7Editor scoreCheck price on Amazon

Fanless Mini PC Industrial

Celeron N2840

8GB DDR3L RAM

Dual Gigabit LAN

Fanless Compact Design

The Fanless Mini PC Industrial offers a rugged and silent solution for basic network needs. It is suitable for users who need a simple unit without the complexity of newer hardware.

Pros

• Fanless industrial design
• Compact and lightweight
• Supports multiple OS
• Low power consumption

Cons

• Older processor speed
• Lower user rating

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Equipped with a Celeron N2840 processor this unit handles light routing efficiently. Its dual gigabit LAN ports allow for standard internet connections and local network management.

The fanless chassis ensures durability in dusty or tight environments. This design makes it ideal for industrial settings or enclosed network cabinets where cooling is limited.

This unit is best for light duty tasks on a strict budget. It provides essential connectivity without the overhead of high performance features found in other models.

Industrial Durability

Built to withstand harsh conditions with a sealed fanless chassis design.

Low Power Draw

Consumes minimal electricity making it efficient for 24 7 operation.

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7. Firewall Intelligent Soft Routing – Compact Opnsense

4.4Editor scoreCheck price on Amazon

Firewall Intelligent Soft Routing

Celeron N2840

4GB DDR3L RAM

Dual Gigabit LAN

Fanless Micro Appliance

The Firewall Intelligent Soft Routing Micro Appliance provides a compact entry point for network security. It is designed for users who need a small device to handle basic Opnsense functions.

Pros

• Tiny footprint
• Fanless silent operation
• Supports firewall software
• Dual display support

Cons

• Low RAM amount
• Older CPU architecture

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With a Celeron N2840 and dual gigabit ports it manages standard home traffic effectively. The 4GB of RAM is limited but sufficient for running a simple firewall without extra services.

Its fanless design keeps the unit silent and reduces dust intake over time. This makes it a practical choice for small desks or hidden network corners.

This appliance is ideal for basic users needing a dedicated firewall box. It delivers essential features in a very small package without unnecessary bloat or noise.

Small Footprint

Fits in tight spaces making it easy to hide behind routers or monitors.

Quiet Cooling

Passive cooling ensures zero noise which is great for home office setups.

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8. Mini PC N150 Firewall – High Throughput Opnsense

3.8Editor scoreCheck price on Amazon

Mini PC N150 Firewall

Intel N150 Processor

Dual 10GbE + 2.5GbE

No RAM Included

AES-NI Support

The Mini PC N150 Firewall targets high performance users requiring 10GbE connectivity. It offers a mix of legacy SFP+ and modern LAN ports for versatile network integration.

Pros

• Includes 10GbE SFP+ ports
• Modern N150 processor
• Supports high speed networks
• Multiple LAN options

Cons

• No RAM included in box
• Complex for simple needs

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Powered by the N150 processor this unit is capable of handling multi-gigabit speeds. It supports AES-NI which accelerates encryption tasks for secure data transmission.

Users should note that RAM is not included which adds to the setup cost. This flexibility allows buyers to choose memory based on their specific virtualization needs.

This unit is best for advanced setups needing future proof speeds. It bridges the gap between standard home gear and professional enterprise networking hardware.

Multi-Gigabit Speeds

Support for 10GbE and 2.5GbE ensures readiness for high speed internet.

Flexible Memory

Buying RAM separately allows for customization based on system requirements.

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9. MeLE Quieter DL Fanless Mini PC N150 – Efficient Opnsense

5.0Editor scoreCheck price on Amazon

MeLE Quieter DL Fanless Mini PC N150

Intel N150 Processor

8GB DDR4 RAM

Dual I226V LAN

Fanless Silent Cooling

The MeLE Quieter DL Fanless Mini PC N150 is another top choice for silent operation. It achieves a 5.0 rating by combining efficiency with robust network features for home labs.

Pros

• Perfect 5.0 customer rating
• Efficient power usage
• Triple 4K display support
• Reliable Intel networking

Cons

• Lower RAM than other variants
• Premium price point

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It comes with 8GB of RAM and supports high speed 2.5GbE LAN. The Intel I226-V controllers ensure broad compatibility with Linux based systems and firewall distributions.

The fanless design keeps it silent and efficient for always-on use. It supports three 4K displays which helps users manage multiple network services simultaneously.

This is an ideal unit for those who value silence and power. Its high rating confirms its reliability as a stable platform for long term network management.

Energy Efficient

Draws very little power ensuring low electricity costs for 24/7 operation.

Triple Display

Manage logs dashboards and apps simultaneously across three screens.

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10. ASRock DeskMini X300 – Custom Opnsense

4.3Editor scoreCheck price on Amazon

ASRock DeskMini X300 2.5G Series

AMD AM4 Barebone

DDR4 Memory Support

Single 2.5G LAN

Triple Display Support

The ASRock DeskMini X300 is a barebone kit for those who want to build their own Mini PC for Opnsense. It offers flexibility to choose CPUs and memory that suit your needs.

Pros

• Highly customizable hardware
• Strong AMD platform
• Triple display output
• Fits small spaces

Cons

• Requires separate components
• Only one LAN port

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It supports a wide range of Ryzen processors up to 65W for high performance. The board includes one 2.5GbE port which is useful for WAN but lacks secondary LAN out of box.

With triple display support it is versatile for home lab management tasks. Its small 1.92L chassis allows it to fit into tight spaces on a desk or shelf.

This kit is perfect for DIYers who want total control over specs. It provides a solid foundation for a custom firewall solution with high processing power.

Build Your Own

Allows you to select specific CPUs and RAM to match your budget.

Compact Form

Small volume design is ideal for space constrained environments.

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Buying Guide – How to Choose the Best Mini PC for Opnsense

Choosing the right device for your network requires balancing performance features and budget needs effectively.

Network Interface Count

A critical factor for any firewall appliance is the number of Ethernet ports. Ideally look for a unit with at least two 2.5GbE LAN ports to separate your WAN and LAN networks without needing extra switches.

Devices with six or more ports are excellent for complex networks with multiple VLANs or ISP connections.

Processor Performance

The processor determines how much traffic your Opnsense firewall can handle. Modern Intel N150 or AMD Ryzen 3 5300U chips offer excellent throughput for home use.

Ensure the CPU supports AES-NI for hardware accelerated encryption which is essential for secure VPN connections and HTTPS traffic filtering.

Memory Capacity

RAM is vital for running additional services alongside your firewall like DNS or monitoring tools. Aim for a minimum of 8GB but 16GB is preferred for future proofing.

Check if the unit has expandable memory slots if you plan to run virtual machines or heavier workloads in the future.

Cooling System

Fanless units are highly desirable for home environments because they operate in complete silence and reduce dust intake. Active cooling units are more powerful but generate some noise.

If you prefer silent operation prioritize fanless models even if it means accepting slightly lower raw performance compared to active cooled units.

Storage Type

Modern Opnsense systems benefit from fast NVMe SSD storage to handle logs and temporary files efficiently. Avoid older eMMC or SATA drives if possible.

Ensure the unit offers an upgradeable SSD slot so you can increase capacity as your logging requirements grow over time.

Display Support

Having the ability to connect multiple monitors is a bonus for network administrators. Look for units with HDMI DisplayPort or USB-C video outputs.

Triple display support allows you to view logs metrics and the dashboard simultaneously without constantly switching windows.

Power Consumption

Since these devices run 24/7 low power draw is important for energy efficiency and heat management. Fanless units typically consume less power than active cooling systems.

Look for specs indicating under 10 watts idle usage to ensure the unit remains cool and cost effective to operate year round.

Brand Reputation

Stick with reputable brands that offer consistent firmware support and BIOS updates. This ensures your hardware remains compatible with future Opnsense versions.

Check customer reviews for long term reliability feedback to avoid units that may suffer from hardware failures after a few months of use.

How to Use and Care for Your Mini PC for Opnsense

Begin by connecting the dual LAN ports to your network switch or router. Assign one port as WAN for internet access and the other as LAN for your local devices.

Install Opnsense from a bootable USB drive following the official installer steps. Once installed update the firmware to ensure you have the latest security patches and features.

Place the unit in a well ventilated area to prevent overheating. For fanless models ensure there is some airflow space around the metal case to aid passive cooling effectively.

Frequently Asked Questions

Final Thoughts on Choosing the Best Mini PC for Opnsense

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