SAMA B850 850W ATX Power Supply vs MEAN WELL LRS-100-24 AC/DC Switching Power Supply 108W 24V 4.5A Single Output fo
Updated August 2026 — The SAMA B850 is ideal for high-performance gaming setups, while the MEAN WELL LRS-100-24 is better suited for industrial applications. Choose based on your specific needs.
The SAMA B850 is ideal for high-performance gaming setups, while the MEAN WELL LRS-100-24 is better suited for industrial applications. Choose based on your specific needs.
Why SAMA B850 850W ATX Power Supply is better
power output
850W vs 108W
efficiency certification
80 PLUS Bronze vs 90% efficiency
warranty
3-year warranty vs unspecified
Why MEAN WELL LRS-100-24 AC/DC Switching Power Supply 108W 24V 4.5A Single Output fo is better
price
C$32.95 vs C$74.99
compact design
30mm slim profile vs standard ATX size
industrial use
designed for industrial applications vs gaming
Overall score
Specifications
| Spec | SAMA B850 850W ATX Power Supply | MEAN WELL LRS-100-24 AC/DC Switching Power Supply 108W 24V 4.5A Single Output fo |
|---|---|---|
| Brand | SAMA | MEAN WELL |
| Model | B850 | LRS-100-24 |
| Input Voltage | N/A | 85-264VAC |
| Output Voltage | N/A | 24V |
| Cooling | Fan | Fanless |
Dimension comparison
Overview of the SAMA B850 and MEAN WELL LRS-100-24
The SAMA B850 850W ATX Power Supply and MEAN WELL LRS-100-24 AC/DC Switching Power Supply serve different purposes and target audiences. The SAMA B850 is designed for high-performance desktop computers, while the MEAN WELL LRS-100-24 is suited for industrial applications. With a price difference of C$42.04, understanding their features is crucial for making an informed decision.
Power Output and Efficiency
The SAMA B850 boasts a substantial power output of 850 watts, making it ideal for demanding systems that require significant energy, such as gaming PCs with high-end GPUs like the RTX 4090. It features an 80 PLUS Bronze certification, ensuring over 85% efficiency at typical loads, which translates to energy savings and reduced electricity costs. In contrast, the MEAN WELL LRS-100-24 provides a maximum output of 108 watts at 24V with 90% energy efficiency. While it excels in efficiency, its power output is limited, making it more suitable for less demanding applications.
Design and Form Factor
The design of the SAMA B850 focuses on aesthetics and functionality, featuring sleek black flat cables that facilitate easy cable management and improve airflow within a computer case. This design choice is particularly beneficial for enthusiasts who prioritise visual appeal alongside performance. On the other hand, the MEAN WELL LRS-100-24 has a compact 30mm slim profile, designed for industrial settings where space may be a constraint. Its robust metal mesh housing aids in superior heat dissipation, ensuring reliability in various operational conditions.
Cooling Mechanisms
Cooling solutions are critical in power supplies to maintain optimal performance. The SAMA B850 incorporates a temperature-controlled fan that operates quietly, ensuring minimal noise while providing effective cooling. This feature is particularly advantageous for users who value a quiet computing environment. Conversely, the MEAN WELL LRS-100-24 is designed for fanless operation, which can be a significant advantage in noise-sensitive applications. It can operate over a wide temperature range of -30°C to +70°C, showcasing its robustness in challenging environments.
Protection Features
Both power supplies come with a range of protection features, but they cater to different needs. The SAMA B850 includes overvoltage protection (OVP), overcurrent protection (OCP), over power protection (OPP), and short circuit protection (SCP), backed by a 3-year warranty. This comprehensive protection suite offers peace of mind for users investing in high-value components. The MEAN WELL LRS-100-24 also features OVP, overload protection, and short circuit protection, ensuring safe operation in industrial settings. It stands out with its ability to withstand 300VAC surge inputs for up to 5 seconds, making it particularly resilient against voltage spikes.
Applications and Use Cases
The intended applications for these power supplies vary significantly. The SAMA B850 is tailored for gamers, content creators, and enthusiasts who require a powerful and efficient power source for high-performance PCs. It is well-suited for premium builds that leverage advanced graphics cards and multiple peripherals. In contrast, the MEAN WELL LRS-100-24 is designed for industrial automation systems, control panels, and electronic instruments. Its rugged construction and efficiency make it ideal for setups where reliability and stability are paramount.
Price Point Comparison
The SAMA B850 is priced at C$74.99, reflecting its high power output and advanced features tailored for gaming and high-performance computing. The MEAN WELL LRS-100-24, on the other hand, is significantly more affordable at C$32.95, which can be attractive for those needing a reliable power supply for industrial applications without the demand for high wattage. The substantial price difference highlights the distinction in their target markets and functionalities.
Customer Support and Warranty
When investing in a power supply, customer support and warranty are important considerations. The SAMA B850 comes with a 3-year warranty, reinforcing the manufacturer's commitment to quality and customer satisfaction. This warranty is especially valued by gamers and PC builders who require assurance of their investment. The MEAN WELL LRS-100-24, while not explicitly detailing a warranty period in the provided data, is known for its robust construction and reliability, which often translates to longevity in demanding environments. However, potential buyers should verify the warranty terms for peace of mind.
Which should you buy?
Choosing between the SAMA B850 and MEAN WELL LRS-100-24 ultimately depends on your specific needs. If you're a gamer or content creator requiring high power and efficiency, the SAMA B850 is the better choice with its 850W capacity and 80 PLUS Bronze certification. However, if you need a reliable, budget-friendly power supply for industrial applications, the MEAN WELL LRS-100-24, with its compact design and high efficiency, is an excellent option. Assess your requirements and priorities to make the best decision for your setup.
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