The Minisforum MS-02 Ultra – The First 48 Hours

The MS-02 Ultra is the latest workstation from Minisforum, and is currently undergoing testing and review here at NASCompares. However, even after just 48 hours, a whole bunch of interesting design choices and unique qwerks to the arcitecture have emerged that I wanted to cover in the meantime before the full review is complete. The MS-02 Ultra essentially trying to recapture the magic and impact of the incredibly popular MS-01 – and it is attempting this by doubling, trippling and (in some cases) quadrupling the base specifications! The Minisforum MS-02 Ultra arrives as a compact workstation that incorporates a 24-core Intel Core Ultra 9 285HX processor, up to 256 GB of ECC DDR5 memory, internal 350 W power delivery, multiple PCIe expansion options, and a network configuration that includes dual 25GbE, 10GbE, and 2.5GbE. After 48 hours of initial testing, several hardware behaviors have emerged regarding thermals, acoustics, lane distribution, storage configuration, and chassis layout. The following sections outline these early observations, supported by confirmed specifications and hands-on inspection. Stay tuned for the full review, but at least for now, let’s discuss the early highlights and low lights!

Design of the MS-02 Ultra

The internal design of the MS-02 Ultra differs considerably from earlier Minisforum workstation models and moves away from the layout used in the MS-S1 Max. Although the system retains a slide-out internal frame, the mechanism is less streamlined than the earlier S-series implementation because of how densely the components are arranged.

The interior resembles a compressed micro-tower layout, with the CPU cooling assembly, PSU, PCIe risers, and storage positions layered closely together. A dual-fan ventilation chamber spans the frontal section of the chassis, pulling air through a vented intake and directing it across the primary cooling hardware before forcing it out the rear. This arrangement appears to be a necessary response to the higher thermal output of the Ultra 9 285HX and the inclusion of multiple expansion slots, both of which require more directed airflow than Minisforum’s previous compact workstation designs.

The placement of internal components reflects the limited spatial tolerance of the 4.8-liter enclosure. The internal 350 W PSU occupies a significant section of the lower frame and includes additional power leads intended for low-profile GPU or accelerator cards, something rarely present in machines of this size. The motherboard runs across most of the horizontal section and positions the CPU vapor-chamber cooler toward the middle, while memory slots, NVMe connectors, and the PCIe riser for the combo NIC occupy the remaining pockets of available space.

Because cooling pipes and the ventilation housing sit directly above the CPU-side memory slots, Minisforum added a custom angled heatsink to ensure airflow reaches these modules. This results in a serviceable layout but one that requires more deliberate disassembly, as the compact structure prioritizes component density and thermal guidance over ease of access or open internal spacing.

Early Heat, Noise and Power Use of the MS-02 Ultra

Initial thermal behavior suggests the MS-02 Ultra is managing its compact layout with a cooling strategy built around a dual-fan chamber and a six-heatpipe radiator assisted by phase-change material. During the first setup period, surface temperatures around the chassis varied, with readings near the side ventilation panels and case edges settling around the low-to-mid 40s, while the front intake area measured lower due to the direct airflow path.

Early internal temperature checks, taken before any sustained workloads were applied, showed values consistent with a system that is heavily packed but actively cooled across multiple zones. These readings align with Minisforum’s stated 5000 RPM maximum fan speed and the intention to maintain a 100 W to 140 W CPU power envelope depending on configuration. However, because these measurements were taken during routine preparation rather than stress testing, they provide only a preliminary indication of how the system will manage long-duration loads.

Noise levels during this early period ranged from the low 30s dBA while performing software installations and background operations, with no significant fluctuations unless brief bursts of activity occurred. This behavior suggests fan control may be tied primarily to BIOS-level thermal triggers rather than granular OS-side control, something that will require further testing.

Power consumption during light activity remained in the 50 to 60 W range, which is consistent with a workstation-class system running the Ultra 9 285HX while idle or handling moderate foreground tasks. Removing the dual-25GbE combo card or disabling its slot reduced power draw by roughly 10 to 11 W, highlighting the overhead associated with multi-lane NICs and onboard controllers. These early figures provide a baseline for comparison against heavier benchmarks that will be performed in the full review.

The 25GbE, 10GbE and WiFi 7 Network Card in the MS-02 Ultra

The MS-02 Ultra’s networking implementation is centered around a PCIe-based combo card that integrates dual 25GbE SFP+ ports with two additional M.2 NVMe slots. This card is installed in the PCIe 4.0 x16 position rather than the PCIe 5.0 slot, and it includes a dedicated controller with active cooling and heatsinks that cover both the networking and storage components.

Early inspection shows the card draws a notable amount of power, which corresponds with the increased thermal and electrical requirements of Intel’s E810-class 25GbE controllers. Because of this, Minisforum’s inclusion of dedicated airflow and structural reinforcement around the card is necessary within the constrained 4.8-liter chassis. The presence of this dual-purpose add-in card also means the MS-02 Ultra’s total NVMe count depends on whether the system is configured with the 285HX version, as the lower-tier CPUs remove the combo module entirely.

Beyond the 25GbE configuration, the system includes onboard 10GbE and 2.5GbE RJ45 ports, the latter supported by Intel’s i226-LM with vPro capabilities, allowing BIOS-level remote management. The combination of high-speed SFP+, copper-based multi-gigabit ports, and embedded management options positions the system for lab, server, or virtualization roles rather than conventional desktop use.

Wireless capability is supplied via a WiFi 7 and Bluetooth 5.4 module connected through an M.2 E-Key slot, providing high-throughput wireless performance alongside its wired interfaces. Together, these connectivity features expand the system’s potential use cases, particularly for users planning to deploy virtualized environments or bandwidth-intensive tasks such as shared storage testing or multi-system clustering.

How m.2 Storage on the MS-02 Ultra is Done

The MS-02 Ultra distributes its four NVMe slots across two different locations, with two mounted on the mainboard and two integrated into the dual-25GbE combo card. The pair located on the system board are positioned on the underside, near the memory and CPU assembly, and both are listed as PCIe 4.0 x4 according to Minisforum’s documentation.

Early inspection suggests that one of these may have a PCIe 5.0 lane path available at the hardware level, though software restrictions or lane bifurcation rules may currently limit it to Gen 4 behavior. This is an area that requires further validation using a Gen 5 SSD, as the lane layout on the 285HX platform allows various allocation possibilities depending on how Minisforum assigned bandwidth between CPU, chipset, and expansion slots. These internal slots have modest vertical clearance, meaning SSDs with tall heatsinks cannot be used without removing or replacing the pre-fitted cooling structures.

The remaining two NVMe slots reside on the network combo card alongside the 25GbE controllers. These operate under different bandwidth rules depending on SSD capacity: drives up to 4 TB operate at PCIe 4.0 x4, while larger 8 TB models shift down to PCIe 3.0 x4. This behavior appears to be related to the card’s onboard controller and how its internal bifurcation splits resources between the NIC and storage lanes.

Physical space is also restricted on the card, requiring low-profile SSDs in certain positions to avoid obstruction of the cooling shroud and airflow channel. Minisforum includes an additional heatsink in the package for users installing their own drives, but using SSDs with taller factory heatsinks may be impractical. Altogether, storage layout on the MS-02 Ultra is functional and high-capacity, but with lane behaviors and physical constraints that require attention during configuration.

Memory on the MS-02 Ultra

The MS-02 Ultra provides four DDR5 SODIMM slots, but their distribution within the chassis is unconventional due to the system’s compact thermal layout. Two slots sit on the mainboard near the CPU-side M.2 positions, placed directly in the airflow path of the vapor-chamber cooler and its dual-fan assembly. Because of this, Minisforum has added a custom angled heatsink that draws air from the primary cooling channel across the modules and nearby components.

This arrangement is intended to compensate for the thermal density around the CPU area, where heat buildup would otherwise be more likely. These two slots support both ECC and non-ECC memory, though ECC functionality is active only on the 285HX model. Their placement suggests Minisforum prioritized consistent airflow over ease of access, making upgrades possible but less straightforward than on more open workstation layouts.

The remaining pair of SODIMM slots is located on the opposite side of the board, positioned away from the CPU cooling assembly and closer to the chassis frame. These modules have more breathing room but rely on passive airflow from the system’s general ventilation rather than a focused cooling path. All four slots support speeds up to 4800 MHz, with XMP profiles unavailable due to Minisforum’s implementation and Intel’s platform limitations.

During early testing, memory installation worked as expected, though the arrangement of these slots means users planning maximum 256 GB configurations will need to work within the physical constraints of the layout. Overall, the memory design reflects a tradeoff between supporting high-capacity ECC configurations and fitting the necessary cooling infrastructure into a small volume.

PCIe Card Support on the MS-02 Ultra

The MS-02 Ultra incorporates three PCIe slots arranged to maximize flexibility within its compact chassis: a PCIe 5.0 x16 slot, a PCIe 4.0 x16 slot, and a PCIe 4.0 x4 slot. The PCIe 5.0 slot is left unoccupied by default, allowing users to install a low-profile GPU or accelerator card that fits within the airflow and power constraints of the 350 W internal PSU.

Minisforum includes auxiliary power cables within the system, which is uncommon for small-form-factor workstations and indicates that the chassis is intended to support cards that require supplemental power. Because of the chassis height and width, only dual-slot, low-profile cards with modest cooling requirements are viable, but this still introduces options for compute or media workloads that benefit from hardware acceleration.

The PCIe 4.0 x16 slot is occupied in the 285HX configuration by the dual-25GbE plus dual-M.2 combo card, which introduces additional thermal and power considerations. This leaves the PCIe 4.0 x4 slot available for further expansion, provided the card used meets the system’s spatial limitations. The layout demonstrates Minisforum’s approach to balancing lane allocation between CPU, storage, and networking, especially given the 24 available PCIe lanes on the Ultra 9 platform.

Although the physical presence of three slots in such a compact volume is unusual, the arrangement is functional, and power delivery from the internal PSU supports moderate add-in card configurations. Users will need to consider airflow direction, card length, and slot occupation carefully to avoid restricting internal ventilation.

Conclusion and Verdict on the Minisforum MS-02 Ultra (So Far…)

The MS-02 Ultra presents a compact workstation design that integrates a high-core-count CPU, multiple NVMe storage options, high-speed networking, and an internal PSU within a tightly arranged chassis. Early testing indicates that the system’s thermal behavior, noise profile, and power draw are consistent with its component density, though the long-term performance of its cooling strategy requires extended benchmarking before reaching definitive conclusions. The design choices, such as the split placement of memory slots, the use of a large dual-fan cooling chamber, and the reliance on a densely packed internal layout, all reflect Minisforum’s effort to fit workstation-grade hardware into a constrained volume.

In terms of features, the dual-25GbE plus dual-M.2 combo card remains the most distinctive element, expanding the system’s potential for virtualized environments, NAS roles, and bandwidth-heavy workflows. PCIe allocation, memory configuration, and storage behavior introduce several considerations for users planning upgrades or specialized deployments. While these early observations indicate a capable and flexible platform, further testing is necessary to determine sustained thermal performance, PCIe stability under load, and real-world throughput of the networking and storage subsystems. The forthcoming full review will provide those extended results, but for now, the system presents a feature-rich design with several areas that merit deeper evaluation.

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The Minisforum MS-02 Workstation – FINALLY A MS-01 KILLER?

Note – Massive thanks to PCWatch for their coverage of the Japan IT Week 2025 Event. They made an excellent article on the Minisforum MS-02 HERE and was the source for today’s article. Check them out!

The Minisforum MS-02 Ultra is a compact 4.8-liter workstation revealed at Japan IT Week Autumn 2025, marking a major upgrade over the earlier MS-01 model. Built around Intel’s 24-core Core Ultra 9 285HX processor, it merges high-end mobile CPU performance with features traditionally reserved for full-size desktops. The system includes support for up to 256 GB of ECC DDR5 memory, four PCIe 4.0 NVMe slots, and three PCIe expansion slots, one of which supports PCIe 5.0 ×16. Network connectivity options extend up to dual 25 GbE SFP28 ports, alongside 10 GbE and 2.5 GbE (vPro) Ethernet. Designed to serve as a workstation or mini-server, the MS-02 Ultra incorporates an internal 350 W Flex PSU, a slide-out chassis for maintenance, and advanced front-to-rear cooling architecture.

Minisforum MS-02 – Internal Hardware

The Minisforum MS-02 Ultra is built around Intel’s Arrow Lake-HX platform, with the Core Ultra 9 285HX serving as its central processor. This 24-core CPU combines eight performance cores and sixteen efficiency cores, reaching up to 5.5 GHz while maintaining a 140 W thermal design power. It incorporates an integrated Intel Arc GPU with four Xe cores and an NPU capable of up to 13 TOPS for AI acceleration. The CPU provides 24 PCIe lanes in total, which are distributed among the system’s multiple expansion and storage options.

Memory capacity is one of the most notable upgrades over its predecessor. The MS-02 Ultra offers four DDR5 SO-DIMM slots, supporting up to 256 GB of 4800 MHz memory, with full ECC functionality for stability in continuous workloads. Two modules are located on the CPU side of the board, and two on the reverse, optimizing thermal spacing and service access. This capacity places it closer to entry-level server configurations than typical mini PCs, reinforcing its suitability for virtualization or compute-heavy tasks.

Storage expansion is handled through four M.2 2280 NVMe slots, each supporting PCIe 4.0 ×4 bandwidth. Combined, these slots can accommodate up to 16 TB of SSD storage. The system’s slide-out chassis design allows quick installation or replacement of drives, simplifying maintenance. Minisforum has also introduced a small debug LED and clear CMOS button on the board, indicating that the model is targeted toward users familiar with system-level configuration and troubleshooting.

Expansion flexibility extends far beyond most small form factor workstations. The system includes three PCIe slots: one PCIe 5.0 ×16, one PCIe 4.0 ×16 (often occupied by a 25 GbE NIC in standard configurations), and one PCIe 4.0 ×4. The top slot can host dual-slot desktop graphics cards, drawing up to 140 W through an included 8-pin auxiliary connector. This allows for the addition of mid-range GPUs such as the NVIDIA RTX 4000 SFF Ada or workstation accelerators, while still retaining physical compactness.

Power delivery is managed through a built-in 350 W Flex PSU that eliminates the need for an external brick. This internal supply was a deliberate shift from the MS-01’s external adapter and helps sustain higher CPU and GPU draw without additional clutter. The unit supports 100–240 V AC input, giving it universal deployment flexibility for both workstation and light server scenarios.

 

Minisforum MS-02 – Ports and Connections

The Minisforum MS-02 Ultra includes a broad range of connectivity options intended to support both workstation and server workloads. Front access is optimized for frequent use, featuring two USB4 Version 2.0 Type-C ports offering 80 Gbps bandwidth each, a 10 Gbps USB Type-A port, a 3.5 mm audio combo jack, and the system power button. These front USB4 v2 ports also support DisplayPort Alternate Mode and Power Delivery up to 15 W per port, making them suitable for high-speed data transfer or direct monitor output without additional adapters.

The rear I/O layout is designed for permanent peripheral and network connections. It includes a third USB4 Type-C port rated at 40 Gbps, three USB 3.2 Gen 2 Type-A ports at 10 Gbps each, and a single HDMI 2.1 output supporting up to 8K at 60 Hz or 4K at 120 Hz. For network communication, the MS-02 Ultra integrates four ports in total: two 25 GbE SFP28, one 10 GbE RJ-45, and one 2.5 GbE RJ-45. The 2.5 GbE interface uses Intel’s i226-LM controller and supports vPro remote management for BIOS-level administration, which is beneficial for enterprise or headless operation.

Wireless connectivity is provided by an M.2 2230 E-Key slot supporting Wi-Fi 7 and Bluetooth 5.4 modules, enabling flexible configuration for wireless networks or peripheral pairing. The combination of USB4 v2, multiple Ethernet options, and RDMA capability positions the MS-02 Ultra as a system ready for both high-performance workstation setups and compact server deployments. Its port layout, with both front and rear accessibility, ensures straightforward use in horizontal or vertical orientations.

Minisforum MS-02 – Cooling and Temperature Management

The cooling system of the Minisforum MS-02 Ultra is designed to manage sustained high thermal loads while maintaining compact dimensions. The chassis follows a front-intake and rear-exhaust airflow pattern, similar to rackmount servers. A six-heatpipe radiator combined with phase-change material (PCM) ensures efficient heat dissipation from both the CPU and expansion slots. This design enables the system to maintain stable operation at a 140 W CPU TDP, even when fully populated with PCIe cards and NVMe storage. Airflow direction also varies depending on the unit’s orientation, with side-mounted intakes feeding the expansion slots and rear vents handling exhaust when the unit is placed horizontally or vertically.

The internal layout is structured to prevent thermal overlap between major components. The CPU and memory modules are cooled through a direct-contact heat spreader, while GPU and add-in cards draw intake air from the left side and expel it from the right or top, depending on placement. The inclusion of an internal 350 W Flex PSU was balanced with this design, ensuring sufficient clearance and airflow. This approach allows the MS-02 Ultra to sustain continuous high-load performance without external cooling solutions or the noise levels typical of larger tower workstations.

Minisforum MS-02 Ultra Workstation – Worth waiting for?

The Minisforum MS-02 Ultra represents a substantial progression from the original MS-01 workstation, addressing nearly every limitation of its predecessor. The earlier model, released in 2023, gained attention for integrating desktop-class performance into a small form factor but was constrained by its single-slot PCIe design, limited memory capacity, and reliance on an external power brick. The MS-02 Ultra resolves these issues with four DDR5 SO-DIMM slots supporting up to 256 GB ECC memory, a dual-slot PCIe 5.0 ×16 slot for graphics or accelerator cards, and a fully internal 350 W Flex PSU. These refinements, along with the addition of 25 GbE networking and USB4 v2 connectivity, elevate the system into a new category that bridges high-end workstation and compact enterprise server design.

Performance and versatility are at the center of this system’s concept. The inclusion of a 24-core Intel Core Ultra 9 285HX CPU and up to four PCIe 4.0 NVMe drives positions it for continuous workloads such as virtualization, software development, or AI inference without the thermal or structural compromises typical of small PCs. Minisforum’s decision to adopt ECC memory and RDMA-capable networking also underlines a shift toward reliability and professional usage scenarios rather than enthusiast or gaming audiences.

In terms of market placement, pricing has yet to be confirmed, but early indications suggest the MS-02 Ultra will likely start around $1,500, with higher configurations approaching or exceeding $2,000 depending on memory, storage, and NIC options. This aligns it with compact workstations like the ASRock DeskMeet X600 and high-end mini servers from OEM integrators, though the Minisforum model’s density and component flexibility set it apart. Overall, the MS-02 Ultra shows how far the brand’s SFF engineering has advanced since the MS-01, turning a well-liked prototype concept into a fully realized professional-grade workstation built for sustained heavy use.

Note – Massive thanks to PCWatch for their coverage of the Japan IT Week 2025 Event. They made an excellent article on the Minisforum MS-02 HERE and was the source for today’s article. Check them out!

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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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