The Zimaboard 2 Single Board Server Review – The Best Yet?

In an increasingly saturated market of single-board computers and compact servers, the ZimaBoard 2 arrives with a clear goal: to offer an affordable, x86-powered, DIY-friendly alternative that bridges the gap between embedded systems and full-blown home servers. Developed by IceWhale, a brand that has already seen crowdfunding success with products like the original ZimaBoard, ZimaBlade, and ZimaCube, the ZimaBoard 2 aims to refine the company’s mission of delivering low-power, highly customizable devices for tinkerers, creators, and homelab enthusiasts. At its core, the ZimaBoard 2 is designed for users who want flexibility without complexity—whether that’s spinning up a lightweight virtualization platform, building a smart home hub, deploying a personal cloud, or running a local media server with minimal noise and energy consumption.

Unlike consumer-grade NAS systems or ARM-based boards, ZimaBoard 2 taps into the x86 ecosystem, offering broader OS compatibility and performance benefits while maintaining a compact, passively cooled footprint. This review explores the hardware, thermal and network performance, and software environment of the ZimaBoard 2, evaluating where it fits in the broader landscape of edge computing and personal infrastructure. As with previous IceWhale launches, this unit is being released initially through crowdfunding—a factor that calls for cautious optimism. Still, with a track record of fulfilling past campaigns, IceWhale appears confident in ZimaBoard 2’s readiness. Whether that confidence is justified, and whether the board truly earns its place in a crowded DIY server landscape, is what we’ll determine over the course of this review.

Zimaboard 2 Review – Quick Conclusion

The ZimaBoard 2 is a compact, x86-based single board server that strikes a balance between flexibility, efficiency, and affordability. It offers solid performance for its size, thanks to an Intel N150 processor, dual 2.5GbE ports, and a PCIe 3.0 x4 slot for meaningful expansion, making it suitable for tasks like media serving, light virtualization, and home automation. However, limitations such as non-upgradable 8GB RAM, slow onboard eMMC storage, and reliance on passive cooling require careful consideration for more demanding workloads. ZimaOS provides a user-friendly starting point with Docker support and basic file management, though advanced users may prefer to install alternative operating systems. Overall, the ZimaBoard 2 is a capable and well-engineered device for DIY server enthusiasts who understand its constraints and plan their use case accordingly

NOTE – You can visit the Zimaboard 2 Crowdfunding Page (live from 10:30AM ET 22nd April 2025) by clicking the banner below. The entry price for early backers is $169, but that will revert to $179 (and $239 for a scaled-up storage and memory version). I DO NOT receive any kind of affiliate commission or sponsorship for this review (and this review, like all reviews at NASCompares, was done without the brand in question’s interference or input). You can use the link HERE to see the campaign for yourself and/or click the banner below:

Zimaboard 2 Review – Design and Hardware

The physical build of the ZimaBoard 2 continues IceWhale’s trend of delivering thoughtfully designed hardware. The full aluminum enclosure gives the board a sturdy, premium feel, while also serving as its main cooling surface. Every port is clearly labeled, and the board layout is practical and accessible.

The PCIe slot includes a pre-cut section to accommodate longer cards, allowing for flexibility even in this small form factor. IceWhale also includes eco-friendly packaging, a detail that reflects both brand identity and attention to user experience. A cardboard insert allows users to hold the board upright alongside drives, useful for initial setup before a case is selected.

Optional accessories like a SATA adapter board with combined data/power connectors and third-party-compatible drive cages help complete the DIY experience. However, there are some practical limitations to consider: the soldered RAM means users must carefully plan for memory demands, and the internal storage, while functional, will not satisfy users looking for fast OS performance.

At the core of the ZimaBoard 2 is the Intel N150 processor, part of Intel’s Twin Lake architecture, offering four cores with a base clock that boosts up to 3.6GHz. This chip represents a significant step forward compared to the Celeron N3450 used in the original ZimaBoard, delivering better single-thread and multi-thread performance while maintaining a low 6W TDP.

Complementing the CPU is 8GB of LPDDR5x memory clocked at 4800MHz. While the use of fast memory is a welcome improvement, the limitation lies in its soldered nature—users cannot expand beyond this capacity.

This decision may be acceptable for light workloads such as running a Plex server, Docker containers, or Home Assistant, but it could become a bottleneck for users planning to run multiple VMs or resource-heavy services. The N150 CPU does support hardware virtualization and Intel AES-NI, which is essential for tasks like encrypted storage or virtual machine deployment.

In testing scenarios, the CPU delivered solid performance across typical tasks, and managed to keep up during multi-tasked environments with multiple services active. However, users with ambitions for more demanding applications will need to balance those expectations against the non-upgradable memory ceiling.

ZimaBoard 2 comes with 32GB of onboard eMMC storage, a choice that is both practical and limiting. This eMMC module is soldered to the board and is intended to house ZimaOS out of the box, giving users a ready-to-use system upon first boot. While this inclusion lowers the barrier to entry and simplifies setup for beginners, it presents performance limitations and a lack of flexibility. In testing, write speeds hovered around 35MB/s during mixed I/O operations, which is noticeably slow for tasks that involve frequent read/write cycles.

Moreover, should a user opt to install a different OS—such as TrueNAS SCALE, Proxmox, or Unraid—they would either overwrite the bundled ZimaOS or need to boot from an external USB or PCIe-based drive. Since the internal storage is neither M.2 nor socketed, it lacks the speed and modularity enthusiasts often seek in modern setups. As a result, users planning to use ZimaBoard 2 as a primary virtualization or storage server are better off supplementing it with faster storage via USB 3.1, SATA, or the PCIe slot for booting alternative OS environments. This caveat underscores a recurring theme with ZimaBoard 2: it’s well-positioned for entry-level use but requires external upgrades for more ambitious workflows.

One of the ZimaBoard 2’s most compelling features is its inclusion of two SATA 3.0 ports alongside a full PCIe 3.0 x4 slot. This greatly expands the device’s potential beyond typical SBCs, offering users a reliable way to build custom NAS setups, integrate high-speed NVMe storage, or even install networking and accelerator cards. During testing, a Synology combo card featuring two M.2 NVMe slots and a 10GbE Ethernet port was installed in the PCIe slot. The board successfully recognized all interfaces, demonstrating full PCIe compatibility and allowing throughput measurements to confirm the system could push high-bandwidth traffic.

With up to 4GB/s of bandwidth over PCIe, users can install expansion cards for fast storage, additional networking, or even compute offloading—although the small form factor means thermal and power considerations become important quickly. The SATA ports, while standard in speed, proved perfectly functional for connecting 2.5″ SSDs or traditional HDDs. IceWhale’s own accessories, like SATA power adapters and drive cages, help streamline this process, though third-party solutions work just as well.

For users aiming to transform this board into a flexible micro-server, this PCIe slot is a gateway to many possibilities and a key reason ZimaBoard 2 stands out in its category.

In terms of networking, the ZimaBoard 2 comes equipped with two 2.5GbE Ethernet ports, both powered by Intel chipsets—a choice that emphasizes reliability and driver compatibility across various operating systems. These ports are more than just a checkbox feature; they performed reliably under load and achieved full link saturation during file transfer tests and when used in conjunction with PCIe expansion.

In more advanced setups, users can configure bonding or load balancing to maximize throughput or redundancy. Additionally, there are two USB 3.1 ports for attaching external drives, peripherals, or USB-bootable OS images.

The inclusion of a Mini DisplayPort 1.2 allows for 4K video output at 60Hz, which is useful for users who want to use the board as a lightweight desktop or for initial OS installation and diagnostics—though it does require an adapter to convert to standard HDMI. Notably absent is built-in Wi-Fi or Bluetooth, which aligns with its target audience of wired-first home labs and embedded installations. Overall, ZimaBoard 2 offers a well-rounded set of connectivity options that exceed expectations for its size, with the dual 2.5GbE ports making it particularly attractive for networking-focused use cases like firewalls, proxies, or containerized gateways.

Thermal management on the ZimaBoard 2 is entirely passive, with the aluminum enclosure doubling as a heatsink to dissipate heat away from the CPU and other key components. This fanless approach results in completely silent operation, which is ideal for home or office environments where noise is a concern.

However, the trade-off is that the board’s temperature will steadily rise over time, especially in enclosed cases or cabinets with poor airflow. During idle operation, with minimal system load and attached drives in standby, temperatures hovered around 50°C after an hour, increasing slightly to 52–54°C over a 24-hour window.

Under heavier usage—including Plex playback, VM activity, active networking, and full PCIe slot utilization—the system remained thermally stable but showed significant heat buildup. Power consumption in these high-usage scenarios peaked at approximately 39–40W, which is quite efficient given the workload.

Still, users planning to run the board continuously under load are strongly encouraged to introduce active airflow or leave the system in a well-ventilated space. The all-metal build is a clever and minimalist solution, but it has practical limitations that users need to plan for—especially if operating in warmer environments or planning to enclose the unit in a tight chassis.

When put through real-world workloads, the ZimaBoard 2 delivered performance that largely aligned with its specs and design goals. File transfers over the onboard 2.5GbE interfaces reached full saturation in controlled conditions, proving the CPU and I/O subsystems are capable of pushing maximum throughput without significant bottlenecks. PCIe expansion further unlocked performance potential—especially with the Synology combo card, where simultaneous NVMe and 10GbE performance were tested. While NVMe read speeds reached up to 1.6GB/s, write speeds hovered around 500–700MB/s depending on traffic from the 10GbE port.

These variances are expected, given shared PCIe lanes and bandwidth contention, but overall results were respectable. Multimedia performance was also acceptable, with Plex running smoothly and able to stream and scrape metadata while supporting light VM usage concurrently.

In these scenarios, RAM utilization climbed past 50% and CPU usage approached 100%, but the board remained operational and responsive. It’s clear that ZimaBoard 2 is well-suited to low-to-moderate workloads, and can punch above its weight with strategic expansion. However, pushing it into more demanding territory—like simultaneous virtualization, AI inferencing, or high-speed file serving across multiple interfaces—will begin to test its limits.

The lack of active cooling makes thermal planning essential for any serious workload. But overall, the ZimaBoard 2 feels polished and reliable, with a design philosophy that caters well to its core audience of DIY server builders and edge compute experimenters.

Zimaboard 2 Review – Software

ZimaBoard 2 ships with ZimaOS, a custom-built operating system from IceWhale that is based on CasaOS—a lightweight, open-source platform designed for simplicity and ease of deployment. ZimaOS retains the core principles of CasaOS but adds refinements tailored to the Zima ecosystem, particularly features that emerged during development of the more powerful ZimaCube. The out-of-the-box experience is beginner-friendly, offering an intuitive web dashboard called “LaunchPad,” which centralizes access to installed applications, system controls, and file management.

ZimaOS is pre-installed on the board’s eMMC storage, enabling immediate setup without requiring users to flash a drive or download additional software. Despite the modest resources of the ZimaBoard 2, the OS performs responsively, even with several services running in parallel. The interface is clean, albeit minimalistic, focusing on usability over deep customization.

For users who are new to home servers or Docker deployments, the learning curve is surprisingly gentle. Though it lacks some of the granularity of more established platforms like OpenMediaVault or TrueNAS, it’s clear that IceWhale has designed ZimaOS to get users up and running quickly without sacrificing key functionality.

One of the more distinctive features of ZimaOS is its integrated App Store, which acts as a curated hub for Docker-based applications. Unlike traditional NAS interfaces that require command-line Docker commands or extensive Portainer configuration, ZimaOS simplifies deployment through one-click installation and automated environment setups.

Popular applications like Plex, Jellyfin, Stable Diffusion, and more are available by default, with the option to add third-party sources for broader container variety. Behind the scenes, the system leverages containerization frameworks to handle resource isolation and volume mappings, but much of this complexity is hidden from the end user.

Application setup is further eased by pre-configured defaults such as port assignments, directory structures, and even PUID/PGID settings, reducing friction for non-technical users. For those with more experience, ZimaOS still allows you to tweak or override these settings manually. Notably, ZimaOS also includes a basic virtualization interface that supports downloading and running lightweight VMs using prebuilt images.

While this feature is better suited to the higher-specced ZimaCube due to memory and cooling constraints, its presence on the ZimaBoard 2 is still a nice touch and shows that the OS is aiming to grow into a more comprehensive platform. Overall, the application and container ecosystem here punches above its weight, especially considering the resource constraints of the board itself.

In terms of storage and file sharing, ZimaOS delivers a capable if somewhat minimal feature set that prioritizes simplicity over enterprise-style depth. Users can create RAID groups—a new feature compared to earlier CasaOS iterations—manage individual drives, and set up file-level sharing using standard protocols like SMB.

The file manager, accessible through the main dashboard, allows for browsing, copying, and sharing content in a familiar web-based interface. Integration with IceWhale’s own client tool enables a peer-to-peer feature called “peerdrop,” which links multiple Zima-based systems or client devices (like phones and laptops) for rapid syncing and data exchange.

This is especially useful for users who want an easy method to upload media, backup devices, or move files between multiple systems on a local network. Remote access can be enabled through a simple relay-based mechanism, which generates shareable links for specific files or folders, complete with read/write controls. While more advanced access control, encryption, or user quotas are not present in this build, the essentials for home or small office use are here and function as expected.

Cloud integration is also available, allowing the addition of third-party storage such as Google Drive or Dropbox for backup or syncing purposes. Though ZimaOS doesn’t try to replace full-fledged NAS operating systems in terms of depth, it successfully delivers the features most users will need, and its lightweight design ensures responsiveness even on modest hardware like the ZimaBoard 2.

Zimaboard 2 Review – Conclusion & Verdict

The ZimaBoard 2 is a competent and thoughtfully assembled single-board server that builds meaningfully on IceWhale’s earlier efforts, especially the original ZimaBoard and the ZimaBlade. Its design clearly targets users who want more flexibility and performance than traditional ARM-based boards can offer, but who also value power efficiency, silence, and a small footprint. The use of an Intel N150 CPU, 8GB of LPDDR5x memory, dual 2.5GbE ports, and a PCIe 3.0 x4 slot makes it viable for a variety of home server roles—from basic NAS and smart home coordination to lightweight container hosting and local media streaming. Features like onboard SATA, USB 3.1, and a DisplayPort connection further add to its utility. However, there are hardware limitations that may affect long-term suitability for advanced deployments. The soldered RAM cannot be upgraded, and the internal eMMC storage, while useful for initial setup, is too slow for OS-level responsiveness in more demanding use cases. Passive cooling, while appreciated for silence, also imposes some thermal limitations depending on the deployment environment.

On the software side, ZimaOS offers a decent out-of-the-box experience that caters to users with minimal technical background. It handles core tasks like application deployment, file sharing, and system monitoring without requiring advanced configuration, and its Docker-based App Store simplifies access to popular tools. For more experienced users, the system supports third-party OS installation, which is likely how many will ultimately use the ZimaBoard 2. Still, as a bundled solution, ZimaOS has matured significantly and now presents itself as a lightweight, capable, and non-intrusive platform for those who prefer to get started immediately. In the broader context of DIY server hardware, ZimaBoard 2 occupies a middle ground: more powerful and modular than Raspberry Pi-class systems, yet more constrained than full x86 mini PCs or enthusiast-grade NAS hardware. For those who understand and accept these trade-offs, and are willing to plan around its limitations, the ZimaBoard 2 offers a reliable and flexible foundation for compact, energy-efficient computing at the edge.

PROs of the Zimaboard 2

CONs of the Zimaboard 2

x86 Architecture – Compatible with a wide range of operating systems including ZimaOS, Unraid, TrueNAS SCALE, and Proxmox. Dual 2.5GbE LAN Ports – Offers strong networking capabilities for multi-service workloads and gateway setups. PCIe 3.0 x4 Slot – Enables high-speed expansion for 10GbE NICs, NVMe storage, or combo cards. Fanless, Silent Operation – Completely passively cooled, ideal for home or quiet office environments. Compact and Durable Build – Small footprint with an all-metal chassis that doubles as a heatsink. ZimaOS Included – User-friendly OS with a Docker-based App Store and basic VM tools, ready out of the box. Flexible Storage Options – Dual SATA ports plus USB 3.1 support for connecting SSDs, HDDs, or external drives. Low Power Consumption – Efficient 6W CPU with ~10W idle and ~40W max under heavy load scenarios.

Non-Upgradable RAM – 8GB of soldered LPDDR5x limits long-term scalability for memory-intensive tasks. Slow/Small Default Internal Storage – 32GB eMMC is convenient but underperforms for OS-level responsiveness or high I/O workloads. Thermal Headroom is Limited – Passive cooling alone may not be sufficient in closed environments or under sustained load without added airflow. Not launching on Traditional Retail, but instead on Crowdfunding.

NOTE – You can visit the Zimaboard 2 Crowdfunding Page (live from 10:30AM ET 22nd April 2025) by clicking the banner below. The entry price for early backers is $169, but that will revert to $179 (and $239 for a scaled-up storage and memory version). I DO NOT receive any kind of affiliate commission or sponsorship for this review (and this review, like all reviews at NASCompares, was done without the brand in question’s interference or input). You can use the link HERE to see the campaign for yourself and/or click the banner below:

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GMKTec NucBox G9 Flash NAS Review – Insane Value?

The GMKtec NucBox G9 represents the brand’s first attempt to transition from the mini PC market into the world of network-attached storage (NAS). This 4-bay, SSD-only system targets entry-level users and light workloads, offering affordability and versatility in a compact form factor. Designed as a hybrid between a mini PC and a NAS, the G9 comes with pre-installed dual operating systems—Windows 11 Pro and Ubuntu—and a range of features aimed at balancing performance, cost, and functionality.

At its core, the G9 is powered by Intel’s efficient N150 processor, a quad-core chip designed for low-power applications. Paired with 12GB of LPDDR5 memory, it’s clear the system isn’t intended for heavy-duty tasks but rather for home use, backups, and small-scale media hosting.

The reliance on M.2 NVMe SSDs rather than traditional hard drives results in silent operation and faster performance, albeit at a higher cost per terabyte.

While it offers an impressive range of connectivity options, the lack of 10GbE networking and its reliance on PCIe Gen 3 x2 lanes for storage performance may limit its appeal to users with more demanding needs. This review dives deep into the GMKtec NucBox G9 to explore its design, features, and performance, and determine whether it’s worth considering as an entry-level NAS.

GMKTec NucBox G9 NAS Review – Quick Conclusion / TL;DR

The GMKtec NucBox G9 is an affordable, compact NAS system that doubles as a mini PC. With support for up to 32TB of SSD storage across four M.2 NVMe slots, it’s designed for quiet and efficient operation. It’s powered by an Intel N150 processor and features dual 2.5GbE ports, multiple USB connections, and dual HDMI outputs. While the system is cost-effective, it has limitations in thermal management and external connectivity. This device is ideal for home users and small-scale setups that prioritize affordability and low noise over raw performance. However, the reliance on plastic for the chassis, lack of SSD heatsinks, and PCIe Gen 3 x2 lanes limit its appeal for heavy workloads. Users should also be prepared to configure third-party NAS software, as the pre-installed operating systems are not optimized for NAS-specific functionality. If you’re looking for an entry-level, SSD-only NAS with minimal noise and power consumption, the GMKtec NucBox G9 is a compelling option. However, power users or those requiring advanced features like 10GbE or robust thermal performance may find it restrictive. It’s a promising debut for GMKtec in the NAS market, but with room for improvement in future iterations.

Where to Buy? How Much? GMKtec NucBox G9 12+1TB: HERE on Amazon GMKtec G9 12+512GB: HERE on Amazon GMKtec G9 12+2TB Model : HERE on Amazon

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Component	Details
CPU	Intel N150 (Quad-Core, 3.6GHz)
Memory	12GB LPDDR5-4800
Storage	4 x M.2 NVMe (PCIe Gen 3 x2)
Networking	2 x 2.5GbE LAN
Ports	3 x USB-A 3.2 Gen 2, 1 x USB-C (data & video), 1 x USB-C (power), 2 x HDMI (4K 60Hz)
Pre-Installed OS	Windows 11 Pro, Ubuntu Linux
Power Consumption	19-30W
Chassis Material	Plastic
Price	Starting at $169 ($216 for 1TB SSD Model)

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GMKTec NucBox G9 Flash Review – Design

The GMKtec NucBox G9 features a compact, lightweight plastic chassis, which contributes to its affordability but comes with certain drawbacks. While the design is minimalistic and functional, the reliance on plastic for the panel covering the four M.2 NVMe slots raises concerns about thermal performance. Metal would have been a better choice to aid heat dissipation, particularly in an SSD-only system where temperatures can rise quickly under load.

Inside, the system accommodates up to four M.2 NVMe SSDs, each operating at PCIe Gen 3 x2 speeds. This configuration supports up to 32TB of total storage, providing flexibility for users with varying needs.

However, the Gen 3 x2 limitation caps throughput at 2GB/s per drive, which may bottleneck performance in high-demand scenarios. While the system can handle basic RAID configurations, its performance in RAID setups is limited by the hardware.

The absence of heatsinks for the SSDs is a notable oversight. Although pre-configured models with SSDs include basic heatsinks, users adding their own drives will need to invest in aftermarket cooling solutions. The plastic panel covering the storage bays further exacerbates heat dissipation challenges, as it traps heat rather than dispersing it effectively. This is really only noticeable when the system was a especially high use, but it did give me pause for thought. (Thermal test with HikMicro Mini v2 Thermal Camera on Amazon HERE )

Despite these limitations, the G9’s storage configuration is impressive for its price range. SSD-only setups ensure silent operation and faster performance compared to traditional hard drives, making it ideal for environments where noise and energy efficiency are priorities.

GMKTec NucBox G9 Flash Review – Connections

The G9 offers a solid selection of connectivity options for a device in its class. It includes two 2.5GbE LAN ports, allowing users to link aggregate bandwidth or set up separate networks. During testing, these ports easily reached their full potential, delivering consistent performance for both independent and linked configurations. However, the absence of 10GbE networking may deter users with more demanding network requirements.

In addition to networking, the system provides four USB 3.2 Gen 2 ports—three Type-A and one Type-C—offering up to 10Gbps of data transfer per port. The USB-C port doubles as a video output, complementing the two HDMI 2.0 ports that support 4K resolution at 60Hz. These features make the G9 versatile for dual roles as a NAS and a lightweight desktop workstation.

Power input is handled via a dedicated USB-C port connected to an external 65W power supply. This compact power solution aligns with the G9’s low-power design, but it also means there’s no internal power redundancy, which might concern users deploying the device in mission-critical environments.

While the ports and connections are adequate for most use cases, the lack of expandability—such as PCIe slots for adding 10GbE or other features—limits its future-proofing. Users seeking advanced connectivity options may need to consider alternatives or rely on external adapters.

Where to Buy? IOCREST M.2 to 10GbE NIC Adapter Kit – $67 HERE – $81 HERE  Check Amazon HERE

GMKTec NucBox G9 Flash Review – Internal Hardware

The Intel N150 processor is the heart of the GMKtec NucBox G9. This quad-core chip operates at a base clock of 1GHz, with a boost clock of 3.6GHz. Designed for efficiency, it features a 6W TDP, making it well-suited for low-power applications like home NAS setups. While not a powerhouse, it handles light workloads effectively, including file sharing, backups, and media streaming.

Feature	Details
Architecture	Intel Twice Lake
Cores / Threads	4 Cores / 4 Threads
Base Clock Speed	1.0 GHz
Boost Clock Speed	Up to 3.6 GHz
TDP (Thermal Design Power)	6W
Cache	6MB Intel Smart Cache
Memory Support	LPDDR5-4800, DDR4-3200 (dual-channel)
Graphics	Integrated Intel UHD Graphics
Graphics Frequency	Up to 1.0 GHz
Max Display Resolution	4K @ 60Hz (via HDMI/DisplayPort)
PCIe Version	Gen 3 (Up to 9 lanes)
Instruction Set	64-bit
Special Features	Intel VT-x, VT-d, AES-NI, Intel Speed Shift
Manufacturing Process	10nm Intel Process
Release Date	Q1 2025

Paired with 12GB of LPDDR5-4800 memory, the system offers a decent amount of RAM for its intended purposes. However, the memory is soldered onto the board, meaning it cannot be upgraded. This limitation may frustrate users who anticipate scaling up their usage over time. The LPDDR5 memory’s efficiency helps offset this drawback by delivering faster performance compared to older DDR4 standards.

Storage capabilities are impressive, with support for up to four M.2 NVMe drives. These slots operate at PCIe Gen 3 x2, which, while adequate for most entry-level NAS tasks, may bottleneck performance in more demanding scenarios.

The system’s internal hardware also includes an eMMC drive for the pre-installed operating systems, but its limited 64GB capacity may prompt many users to replace it or install a new OS on an M.2 SSD.

The hardware design prioritizes cost-efficiency, which is evident in the lack of ECC memory support and limited thermal management. While these decisions align with the device’s target audience, they reinforce its position as an entry-level solution rather than a high-performance NAS. In other words – KEEP YOUR EXPECTATIONS RELATIVE!!!

GMKTec NucBox G9 Flash Review – Software

The G9 is marketed as a “dual-system” NAS, shipping with Windows 11 Pro and Ubuntu Linux pre-installed. This flexibility allows users to operate the device as a mini PC or a lightweight NAS out of the box. However, neither OS is tailored for NAS-specific functionality, and users seeking advanced features like RAID management or robust file sharing will need to install third-party software.

Popular NAS operating systems such as TrueNAS, Unraid, or OpenMediaVault are compatible with the G9, but they require manual installation and configuration. While this isn’t a deal-breaker, it may deter users unfamiliar with NAS software or those seeking a plug-and-play solution. Ubuntu, while functional, lacks the intuitive tools and features found in dedicated NAS systems.

The inclusion of a Windows 11 Pro license is a welcome addition for users who may want to use the device as a general-purpose PC. However, this feature feels somewhat misplaced in a NAS-focused product, as most users will likely replace the OS with something more suited to storage tasks. Additionally, the 64GB eMMC drive hosting the OS is insufficient for many use cases, necessitating an upgrade to an M.2 SSD.

Overall, the software experience is mixed. While the dual OS option adds versatility, the lack of NAS-specific tools and reliance on user-driven configuration highlight the device’s limitations as a turnkey NAS solution.

GMKTec NucBox G9 Flash Review – Performance & Tests

In performance testing, the G9’s storage read speeds peaked at 1.4–1.5GB/s per drive, which is respectable for its hardware. Write speeds were less consistent, averaging 400–500MB/s under sustained load.

Interestingly (and still being checked into since this review was started), the system features multiple ASM1182e Gen 2 packet switches to carve up the downstream of the PCIe lanes internally (understandable for a modest CPU to require PCIe switches to allow for so many M.2s), but I suspect that THIS is why the write performance was so low. Still checking and will update ASAP here and/or in the video.

The dual 2.5GbE ports delivered solid external performance, easily saturating their bandwidth in both independent and aggregated configurations.

Thermal management proved to be a challenge. Without included SSD heatsinks and with a plastic panel covering the storage bays, temperatures rose quickly under load. Idle temperatures were manageable, but sustained use resulted in throttling, emphasizing the need for aftermarket cooling solutions. This is especially important for users planning to use the device in environments with higher ambient temperatures.

Noise levels were impressively low, even with all three fans running. During idle, the system operated nearly silently, while under load, noise levels remained below 40dB. Power consumption ranged from 19–20W at idle to 28–30W under load, making it an efficient option for users concerned about energy usage.

Overall, the G9 performs well for an entry-level system but struggles in scenarios requiring sustained performance. Its thermal limitations and PCIe bottlenecks make it better suited for light to moderate workloads rather than demanding applications.

GMKTec NucBox G9 Flash Review – Conclusion & Verdict

The GMKtec NucBox G9 is an ambitious first step for the brand into the NAS market, blending elements of mini PCs with network-attached storage. Its compact, lightweight design, combined with the use of M.2 NVMe SSDs, makes it an efficient, quiet solution for home users or small-scale deployments. With a competitive starting price of $150-199 and dual operating systems pre-installed, it offers value for users who are comfortable setting up their own NAS software. The inclusion of dual 2.5GbE ports, multiple USB connections, and support for up to 32TB of SSD storage ensures it caters to a wide variety of use cases, from media hosting to backups. However, its reliance on plastic for the chassis and the absence of SSD heatsinks highlight thermal management as a weak point, making it less suitable for sustained or intensive workloads without additional investment in cooling solutions.

While the device performs well in basic NAS tasks, its hardware limitations, such as PCIe Gen 3 x2 slots and a non-upgradable memory configuration, may leave power users wanting more. The lack of 10GbE networking and limited built-in NAS software tools further cement its position as an entry-level system rather than a fully-featured solution. Ultimately, the NucBox G9 is a solid choice for users seeking an affordable, low-power NAS for quiet environments but less ideal for those with advanced needs or performance-intensive requirements. As a debut NAS product, it succeeds in offering value within its scope while leaving room for refinement in future iterations.

Pros	Cons
Affordable starting price ($150-199 for base model)	Limited to PCIe Gen 3 x2 lanes for M.2 NVMe slots
Compact and lightweight design	Plastic chassis reduces thermal efficiency
Quiet operation, even under load	No SSD heatsinks included
Dual 2.5GbE ports with solid performance	Lacks 10GbE networking
Supports up to 32TB of SSD storage	Pre-installed OS (Windows/Ubuntu) not NAS-optimized
Low power consumption (19–30W)	Non-upgradable 12GB LPDDR5 memory
Pre-installed dual operating systems	Not a true turnkey NAS solution
Flexible connectivity options (USB, HDMI, etc.)	Thermal throttling under heavy loads

Where to Buy? GmkTec G9 NAS (AliExpress) – HERE GMKTec NucBox G9 NAS (Amazon) – HERE

 

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Finally, for free advice about your setup, just leave a message in the comments below here at NASCompares.com and we will get back to you. Need Help? Where possible (and where appropriate) please provide as much information about your requirements, as then I can arrange the best answer and solution to your needs. Do not worry about your e-mail address being required, it will NOT be used in a mailing list and will NOT be used in any way other than to respond to your enquiry. [contact-form-7] TRY CHAT Terms and Conditions   Alternatively, why not ask me on the ASK NASCompares forum, by clicking the button below. This is a community hub that serves as a place that I can answer your question, chew the fat, share new release information and even get corrections posted. I will always get around to answering ALL queries, but as a one-man operation, I cannot promise speed! So by sharing your query in the ASK NASCompares section below, you can get a better range of solutions and suggestions, alongside my own.

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