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SAMA Black 850W Power Supply - Fully Modular 80 Plus Gold Certified ATX 3.1 & PC vs MEAN WELL LRS-100-24 AC/DC Switching Power Supply 108W 24V 4.5A Single Output fo

Updated August 2026The SAMA Black 850W Power Supply is the superior choice for high-performance needs, while the MEAN WELL LRS-100-24 is ideal for industrial applications.

The SAMA Black 850W Power Supply is the superior choice for high-performance needs, while the MEAN WELL LRS-100-24 is ideal for industrial applications.

Why SAMA Black 850W Power Supply - Fully Modular 80 Plus Gold Certified ATX 3.1 & PC is better

higher wattage

SAMA provides 850W compared to MEAN WELL's 108W

modular design

SAMA's fully modular design enhances cable management

longer warranty

SAMA offers a 5-year warranty versus unspecified for MEAN WELL

Why MEAN WELL LRS-100-24 AC/DC Switching Power Supply 108W 24V 4.5A Single Output fo is better

compact size

MEAN WELL has a slim 30mm profile

fanless operation

MEAN WELL operates without a fan for silent performance

rugged construction

MEAN WELL is built for industrial durability

Overall score

SAMA Black 850W Power Supply - Fully Modular 80 Plus Gold Certified ATX 3.1 & PC
85
MEAN WELL LRS-100-24 AC/DC Switching Power Supply 108W 24V 4.5A Single Output fo
60

Specifications

SpecSAMA Black 850W Power Supply - Fully Modular 80 Plus Gold Certified ATX 3.1 & PCMEAN WELL LRS-100-24 AC/DC Switching Power Supply 108W 24V 4.5A Single Output fo
BrandSAMAMEAN WELL
ModularityFully ModularNon-Modular
CoolingECO FanFanless
Efficiency Rating80 PLUS Gold90%
Input RangeN/A85-264VAC

Dimension comparison

SAMA Black 850W Power Supply - Fully Modular 80 Plus Gold Certified ATX 3.1 & PCMEAN WELL LRS-100-24 AC/DC Switching Power Supply 108W 24V 4.5A Single Output fo

Overview of the Products

When comparing the SAMA Black 850W Power Supply and the MEAN WELL LRS-100-24 AC/DC Switching Power Supply, it's clear that these products cater to different needs within the power supply market. The SAMA Black 850W is designed for high-performance gaming rigs and workstations, whereas the MEAN WELL LRS-100-24 focuses on industrial and commercial applications. Priced at C$89.99 and C$32.95 respectively, these products showcase a significant difference in cost and functionality.

The SAMA Black provides a robust 850W output, ideal for powering high-end components, while the MEAN WELL LRS-100-24 delivers a more modest 108W, suited for less demanding applications. This disparity highlights the diverse requirements consumers might have based on their specific use cases.

Design and Build Quality

The SAMA Black 850W Power Supply features a fully modular design, allowing users to connect only the necessary cables, which optimizes airflow and cable management. In contrast, the MEAN WELL LRS-100-24 is designed with a slim 30mm profile and metal mesh housing, promoting superior heat dissipation. This compact design is advantageous in space-constrained environments.

While SAMA’s build focuses on high-performance with premium Japanese capacitors, the MEAN WELL model is ruggedized for industrial use, demonstrating its capability to withstand environmental stresses. Both designs reflect their intended usage, with SAMA prioritizing aesthetics and performance, while MEAN WELL emphasizes durability and efficiency.

Efficiency Ratings

Efficiency is crucial in power supplies, and the SAMA Black 850W shines with an 80 PLUS Gold certification, achieving up to 91.15% efficiency at 50% load. This high efficiency not only reduces energy waste but also contributes to lower heat output, enhancing system stability.

On the other hand, the MEAN WELL LRS-100-24 boasts an impressive 90% energy efficiency. While slightly lower than the SAMA model, it still minimizes power loss effectively. The efficiency ratings of both products indicate a commitment to energy conservation, though SAMA leads in this category, reflecting its suitability for high-performance setups.

Compatibility and Connectivity

The SAMA Black 850W Power Supply is designed with ATX 3.1 and PCIe 5.1 compatibility, making it ideal for modern gaming systems that require substantial power for high-end GPUs like the RTX 3090 Ti and RTX 40 series. Its fully modular design allows for a tailored connection setup that enhances compatibility with various components.

Conversely, the MEAN WELL LRS-100-24 operates with a universal AC input voltage range of 85-264VAC, ensuring it can work globally without compatibility issues. However, its single output of 24V limits its use primarily to specific applications, such as industrial automation and control panels. Thus, while SAMA excels in versatility for high-end computing, MEAN WELL offers reliability in industrial settings.

Noise Levels and Operation

In terms of operational noise, the SAMA Black 850W features an ECO fan with Fluid Dynamic Bearing technology, ensuring quiet operation at noise levels as low as ≤20dB-A, even under heavy loads. This makes the SAMA power supply an attractive option for users who value a silent computing environment.

In contrast, the MEAN WELL LRS-100-24 is designed for fanless operation thanks to its superior heat dissipation capabilities, allowing it to function without generating noise. This feature is particularly beneficial in environments where sound levels must be kept to a minimum, such as in laboratories or quiet industrial settings.

Warranty and Reliability

The SAMA Black 850W Power Supply is backed by a 5-year warranty, reflecting the manufacturer’s confidence in the product’s longevity and reliability. This warranty coverage is a significant factor for consumers investing in high-performance components, as it assures them of support in case of defects or failures.

On the other hand, the MEAN WELL LRS-100-24 also offers robust reliability through its rugged construction and extensive testing, including 100% burn-in testing. However, it does not specify a warranty period, which may be a consideration for potential buyers looking for long-term assurance. The warranty provided by SAMA stands out as a critical advantage for users seeking peace of mind.

Application Suitability

The SAMA Black 850W Power Supply is best suited for gamers and PC builders who require high wattage to support demanding hardware configurations. Its features, such as modular design and high efficiency, make it an excellent choice for enthusiasts looking to build powerful systems.

In contrast, the MEAN WELL LRS-100-24’s specifications position it as a reliable option for industrial applications, control panels, and electronic instruments. Its compact size and ruggedness make it ideal for installation in environments where space and durability are critical. Thus, the choice between these two models largely depends on the intended application and power requirements.

Which should you buy?

Choosing between the SAMA Black 850W Power Supply and the MEAN WELL LRS-100-24 depends on your specific needs. If you are looking for a high-performance power supply with extensive compatibility for gaming or workstation builds, the SAMA Black at C$89.99 is the clear winner, offering superior efficiency and modularity.

However, if your requirements lean towards industrial applications with a need for a compact, reliable power source, the MEAN WELL LRS-100-24 at C$32.95 could be more appropriate, despite its lower power output. Ultimately, your decision should be based on the type of systems you intend to power and the operational environment.

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SAMA Black 850W Power Supply - Fully Modular 80 Plus Gold Certified ATX 3.1 & PC vs MEAN WELL LRS-100-24 AC/DC Switching Power Supply 108W 24V 4.5A Single Output fo | versusfinder