Miuzei Raspberry Pi 4 Power Supply - 5V 4.1A 20.5W USB-C Charger with On/Off Swi vs GameMax 750W Rampage Power Supply

Power Output and Compatibility

The Miuzei Raspberry Pi 4 Power Supply delivers 5V at 4.1A, equating to 20.5W of power, while the GameMax 750W Rampage Power Supply offers a substantially higher output of 750W. This stark difference reflects their intended uses: the Miuzei is designed specifically for single-board computers like the Raspberry Pi 4, whereas the GameMax is aimed at powering full desktop gaming PCs.

The Miuzei provides 14% more power than typical 18W (3.6A) supplies for Raspberry Pi 4, ensuring stable operation under high load and preventing undervoltage errors. In contrast, the GameMax’s 750W capacity, with a single 12V rail, supports high current output for demanding gaming rigs. This power difference highlights that the Miuzei is a niche device for low-power computing, while the GameMax suits more complex, power-hungry systems.

Design and Build Quality

In design, the Miuzei Raspberry Pi 4 Power Supply features a compact USB-C charger with an included USB-C to Micro USB adapter for older Pi models. It sports a 1.5m cord—longer than many competitors—and an on/off switch for easy power control without unplugging. The casing is fire-resistant (V0-grade), protecting against several electrical faults, including overcurrent and overheating.

The GameMax 750W Rampage Power Supply uses a semi-modular cable management system, allowing users to connect only the cables they need, which helps maintain a clean PC build. It is built with high-quality Japanese TK capacitors promising reliability and longevity, and includes a 14cm ultra-silent cooling fan to ensure effective thermal management during prolonged gaming sessions.

Efficiency and Certification

Efficiency is a key factor in power supplies, and here the GameMax 750W Rampage stands out with its 80 Plus Bronze 230V certification. This certification means it achieves up to 88% efficiency at 50% load, reducing wasted energy and heat output in typical gaming PC use.

By contrast, the Miuzei Raspberry Pi 4 Power Supply does not list any efficiency certification, which is common for smaller chargers focused on single-board computers. Its primary goal is delivering stable voltage and current rather than optimising efficiency over a wide range of loads.

Cooling and Noise Levels

The GameMax 750W Rampage Power Supply includes a 14cm ultra-silent cooling fan designed to maintain safe operating temperatures while minimising noise. This feature is important in gaming setups where both performance and a quiet environment are valued.

The Miuzei Raspberry Pi 4 Power Supply, being a small USB-C charger, relies on passive cooling and has a fire-resistant case to manage heat safely. Its design is inherently quieter as it does not incorporate a fan, making it suitable for quiet environments but with less focus on active thermal management.

Protection Features

The Miuzei Raspberry Pi 4 Power Supply is equipped with six layers of protection: overcurrent, short circuit, overvoltage, low voltage, overheating, and static protection. Its intelligent chip and fireproof PC shell enhance safety and durability, which is critical when powering sensitive single-board computers.

The GameMax Rampage, while not itemising its protection features in the given data, uses high-quality components like Japanese TK capacitors and an efficient cooling system to ensure stability and longevity. Its semi-modular design also helps prevent unnecessary cable clutter which can aid airflow and reduce risk factors.

Cable and Connectivity

Miuzei offers a 1.5m cord, longer than many competing power supplies for Raspberry Pi devices, and includes a USB-C to Micro USB adapter to support various Raspberry Pi versions (3B+, 3B) and Orange Pi models. This makes it highly versatile for hobbyists who own multiple single-board computers.

The GameMax 750W Rampage is semi-modular, meaning it comes with some cables fixed and others detachable. This cable management approach simplifies PC building and upgrading, ensuring only necessary cables are used, which improves internal airflow and aesthetics in a gaming PC environment.

Price and Value

The Miuzei Raspberry Pi 4 Power Supply costs £10.99, making it an affordable accessory tailored to the needs of Raspberry Pi and similar single-board computer users. Its price reflects its low power output and specialised use case.

In comparison, the GameMax 750W Rampage Power Supply is priced at £45.80, reflecting its significantly higher power capacity, semi-modular design, and components aimed at gaming PCs. While more expensive, it offers greater versatility and power for demanding desktop systems.

Which should you buy?

Choosing between the Miuzei Raspberry Pi 4 Power Supply and the GameMax 750W Rampage Power Supply depends entirely on your needs. If you require a reliable, compact, and affordable power supply for Raspberry Pi 4 or similar devices, the Miuzei is a clear choice with its stable 20.5W output, longer cord, on/off switch, and comprehensive protection features at just £10.99.

However, if you are building or upgrading a gaming PC or a high-performance desktop requiring substantial power, the GameMax Rampage’s 750W capacity, semi-modular cable management, 80 Plus Bronze efficiency, and premium components justify its higher £45.80 price. It offers the power and durability necessary for demanding computing environments.

In summary, the Miuzei is ideal for low-power single-board computer users looking for stability and convenience, while the GameMax Rampage serves gamers and PC builders needing efficient, high-capacity power delivery. Your choice should align with the hardware you intend to power.