Mean Well EDR-120-24 Single Output DIN Rail Power Supply 24V 5 Amp 120W vs be quiet! Power Zone 2 850W ATX 3.1 PSU
Updated August 2026 — The be quiet! Power Zone 2 is the superior choice for high-performance needs, while the Mean Well EDR-120-24 is ideal for budget-conscious users requiring basic power.
The be quiet! Power Zone 2 is the superior choice for high-performance needs, while the Mean Well EDR-120-24 is ideal for budget-conscious users requiring basic power.
Why Mean Well EDR-120-24 Single Output DIN Rail Power Supply 24V 5 Amp 120W is better
price
Mean Well is significantly cheaper at C$42.99.
compact design
Ideal for DIN rail installations.
stability
Reliable for specific industrial applications.
Why be quiet! Power Zone 2 850W ATX 3.1 PSU is better
power output
850W vs 120W for high-performance systems.
efficiency
80 PLUS Platinum certification with up to 94.1% efficiency.
future-proofing
Supports next-gen PCIe 5.1 graphics cards.
Overall score
Specifications
| Spec | Mean Well EDR-120-24 Single Output DIN Rail Power Supply 24V 5 Amp 120W | be quiet! Power Zone 2 850W ATX 3.1 PSU |
|---|---|---|
| Brand | MEAN WELL | be quiet! |
| Current | 5A | 70.8A |
| Voltage | 24V | 12V |
| Certification | None | 80 PLUS Platinum |
| Fan Type | N/A | Pure Wings 3 |
Dimension comparison
Overview of Mean Well EDR-120-24 and be quiet! Power Zone 2
The Mean Well EDR-120-24 Single Output DIN Rail Power Supply and the be quiet! Power Zone 2 850W ATX 3.1 PSU serve different segments of the power supply market, yet both are designed with efficiency and performance in mind. The Mean Well unit is priced at C$42.99, targeting applications requiring a steady 24V output, while the be quiet! Power Zone 2, at C$187.50, caters to high-performance PC builds with higher wattage demands.
Power Output and Efficiency
The Mean Well EDR-120-24 delivers a maximum output power of 120 watts, making it suitable for less demanding applications that require a consistent 24V and 5 amps. In contrast, the be quiet! Power Zone 2 provides a substantial 850 watts of continuous power, ideal for high-end gaming rigs and workstation setups. It boasts an impressive energy efficiency rating of up to 94.1%, thanks to its 80 PLUS Platinum certification, which is a notable advantage for users looking to minimise energy consumption and operational costs.
Design and Cooling Solutions
The design philosophy behind the Mean Well EDR-120-24 focuses on compactness and functionality, making it perfect for DIN rail installations in industrial settings. Conversely, the be quiet! Power Zone 2 incorporates a semi-passive zero-RPM cooling system, meaning its large Pure Wings 3 140mm fan operates only under higher loads, which reduces noise levels under lighter loads. This innovative cooling strategy contributes to a quieter computing experience, particularly in gaming or workstation environments.
Compatibility and Future-Proofing
The Mean Well EDR-120-24 is a straightforward power supply designed for specific applications needing 24V input, making it less versatile in terms of compatibility with modern PC components. On the other hand, the be quiet! Power Zone 2 is an ATX 3.1 PSU equipped with a native 12V-2x6 connector for next-generation PCIe 5.1 graphics cards and supports current-generation GPUs with its additional PCIe 6+2-pin connectors. This level of future-proofing ensures that users investing in this power supply can expect it to remain relevant as technology evolves.
Build Quality and Reliability
Mean Well is known for producing reliable power supplies intended for industrial applications, and the EDR-120-24 is no exception. Its design prioritises stability and consistent output, crucial for sensitive electronics. In contrast, the be quiet! Power Zone 2 claims to offer not only excellent performance but also outstanding reliability, thanks to the quality engineering typical of German manufacturing. Its large fan design ensures efficient cooling, further enhancing the unit's longevity under heavy loads.
Cost Considerations
When evaluating the cost, the Mean Well EDR-120-24 retails for C$42.99, which is highly competitive for a power supply of its kind. It is an excellent choice for budget-conscious users who need reliable power for specific applications. In contrast, the be quiet! Power Zone 2 is priced at C$187.50, reflecting its high wattage and advanced features. While it may be a steeper investment, the efficiency and power capacity it offers can justify the cost for gamers and professionals requiring robust performance.
Target Audience
The Mean Well EDR-120-24 caters predominantly to industrial users or DIY enthusiasts who need a stable power supply for specific electronic projects. Its straightforward design and affordability appeal to those who do not require high wattage or advanced features. In comparison, the be quiet! Power Zone 2 targets gamers and PC builders who demand high performance and reliability for their systems. Its focus on advanced cooling and future-proofing makes it the ideal choice for users looking to build high-end gaming or workstation setups.
Which should you buy?
Choosing between the Mean Well EDR-120-24 and the be quiet! Power Zone 2 depends significantly on your power requirements and intended use. If you need a reliable, cost-effective power supply for lower-demand applications, the Mean Well EDR-120-24 at C$42.99 is a suitable choice. However, if you're building a high-performance system that requires robust power delivery and efficiency, the be quiet! Power Zone 2 at C$187.50 offers superior features and future-proofing capabilities. Ultimately, your decision should align with your specific power needs and budget.
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