Cooler Master MasterBox Q300L Micro-ATX PC Case – vs iUniker Metal Case for Raspberry Pi 5, Support Pi 5 Active
Updated July 2026 — Cooler Master MasterBox Q300L Micro-ATX PC Case – leads on psu size and width.
The Cooler Master MasterBox Q300L offers superior features and versatility for PC builders, while the Metal Case for Raspberry Pi 5 is a budget-friendly option for Raspberry Pi enthusiasts.
Why Cooler Master MasterBox Q300L Micro-ATX PC Case – is better
Cooling
Supports extensive cooling options with liquid cooler and multiple fans.
Compatibility
Accommodates a wide range of components including ATX PSU.
Design
Features a stylish transparent side panel for showcasing builds.
Why iUniker Metal Case for Raspberry Pi 5, Support Pi 5 Active is better
Price
Significantly lower price for budget-conscious users.
Simplicity
Straightforward installation process for Raspberry Pi.
Targeted Use
Specifically designed for Raspberry Pi 5 compatibility.
Overall score
Specifications
| Spec | Cooler Master MasterBox Q300L Micro-ATX PC Case – | iUniker Metal Case for Raspberry Pi 5, Support Pi 5 Active |
|---|---|---|
| Cooling | Excellent | Adequate |
| Material | Steel/Plastic | Metal |
| Expansion | High | Moderate |
| Design | Stylish | Functional |
| Installation | Moderate | Easy |
Dimension comparison
Overview of the Products
When comparing the Cooler Master MasterBox Q300L Micro-ATX PC Case and the Metal Case for Raspberry Pi 5, we see two distinct products aimed at different audiences. The MasterBox Q300L is designed for building compact PCs, while the Metal Case caters specifically to Raspberry Pi 5 users. With prices at $39.99 and $11.25 respectively, the MasterBox Q300L is about 256% more expensive than the Metal Case, indicating a significant difference in target market and functionality.
Design and Build Quality
The Cooler Master MasterBox Q300L features a compact yet functional design, allowing for Micro-ATX or Mini-ITX motherboards, ensuring that users have ample interior space for future upgrades. Its edge-to-edge transparent side panel allows builders to showcase their systems, while the open thermal design promotes optimal airflow. On the other hand, the Metal Case for Raspberry Pi 5 is constructed from high-quality metal, providing excellent protection and heat dissipation. However, its design is strictly functional, aimed at housing the Raspberry Pi securely. While the MasterBox Q300L prioritizes aesthetics and modularity, the Metal Case focuses on practicality and durability.
Cooling Capabilities
Cooling is a critical aspect for any PC build, and the Cooler Master MasterBox Q300L excels in this area. It supports a versatile cooling setup with the ability to accommodate a 240mm liquid cooler and up to five fans. This configuration is essential for maintaining optimal temperatures in more demanding applications. In contrast, the Metal Case for Raspberry Pi 5 supports an active cooler specifically designed for the Raspberry Pi 5. While it offers adequate cooling for Raspberry Pi projects, it does not compare to the extensive cooling options available in the MasterBox Q300L.
Compatibility and Functionality
The MasterBox Q300L supports a variety of components, including CPU coolers up to 159mm in height and GPU cards up to 360mm, making it flexible for gaming and productivity builds. It also allows for a standard ATX PSU, a rarity in compact cases. Conversely, the Metal Case for Raspberry Pi 5 is specifically tailored for the Raspberry Pi 5, ensuring perfect fit and compatibility with HAT expansion boards and NVME devices. While the MasterBox Q300L is better suited for diverse setups, the Metal Case is ideal for users focused solely on the Raspberry Pi platform.
Installation Process
The installation process is straightforward for both cases, but they cater to different needs. The Cooler Master MasterBox Q300L offers a modular I/O panel that can be adjusted in six different locations, providing flexibility depending on the build. This feature makes it easier for users to customize their setup. Meanwhile, the Metal Case for Raspberry Pi 5 comes with a comprehensive set of screws and copper pillars, ensuring a sturdy assembly. The simplicity of the Metal Case’s installation is ideal for users who may not have extensive building experience, while the MasterBox Q300L may require a bit more time due to its modular design.
Price Point
The price difference between the two cases is substantial, with the Cooler Master MasterBox Q300L priced at $39.99 and the Metal Case for Raspberry Pi 5 at $11.25. This means that the MasterBox Q300L is about 256% more expensive. This price reflects the MasterBox’s greater capabilities, aesthetics, and versatility, which are essential for a full PC build. Meanwhile, the Metal Case's lower price makes it an attractive option for those specifically looking to house a Raspberry Pi without breaking the bank.
Target Audience
The Cooler Master MasterBox Q300L is designed for PC builders and gamers who require a compact yet powerful case for their Micro-ATX or Mini-ITX systems. Its features cater to those who value aesthetics, cooling performance, and expandability. In contrast, the Metal Case for Raspberry Pi 5 is aimed at hobbyists and developers focused on Raspberry Pi projects. Its design is straightforward, providing essential protection and functionality without the added features that PC builders might seek.
Which should you buy?
Deciding between the Cooler Master MasterBox Q300L and the Metal Case for Raspberry Pi 5 ultimately depends on your specific needs. If you are looking to build a compact yet powerful PC with ample cooling and expansion capabilities, the MasterBox Q300L is the clear choice despite its higher price. However, if your focus is solely on utilizing the Raspberry Pi 5 for projects, the Metal Case offers excellent value at an affordable price. Each case serves its purpose well, so your choice should align with your intended use.

