SAMA Black 850W Power Supply - Fully Modular 80 Plus Gold Certified ATX 3.1 & PC vs 24Vdc Power Supply din Rail 5A
Updated August 2026 — The SAMA Black 850W Power Supply is a superior choice for high-performance needs, while the 24Vdc Power Supply is suitable for basic applications.
The SAMA Black 850W Power Supply is a superior choice for high-performance needs, while the 24Vdc Power Supply is suitable for basic applications.
Why SAMA Black 850W Power Supply - Fully Modular 80 Plus Gold Certified ATX 3.1 & PC is better
Power Output
850W vs 120W
Efficiency
91.15% vs unspecified
Warranty
5 years vs unspecified
Why 24Vdc Power Supply din Rail 5A is better
Price
C$39.89 vs C$89.99
Simplicity
Designed for basic applications
Size
Compact DIN rail design
Overall score
Specifications
| Spec | SAMA Black 850W Power Supply - Fully Modular 80 Plus Gold Certified ATX 3.1 & PC | 24Vdc Power Supply din Rail 5A |
|---|---|---|
| Brand | SAMA | LAWLRON |
| Modular | Yes | No |
| Input Voltage | 100-240 VAC | 100-240 VAC |
| Output Voltage | 12V | 24V |
| Cooling | ECO Fan | None |
Dimension comparison
Overview of the Products
When comparing the SAMA Black 850W Power Supply and the 24Vdc Power Supply din Rail 5A, it is clear that these products serve vastly different purposes within the power supply market. The SAMA Black is designed for high-performance computing systems, while the 24Vdc Power Supply is tailored for basic industrial applications. The price difference also highlights their target audiences, with the SAMA Black retailing at C$89.99 compared to the more economical C$39.89 for the LAWLRON model.
Power Output and Efficiency
The SAMA Black 850W Power Supply stands out with its impressive output of 850 watts, supporting demanding setups, including high-end gaming rigs and workstations. This power supply boasts an efficiency rating of up to 91.15% at 50% load, thanks to its 80 PLUS Gold certification. In contrast, the 24Vdc Power Supply provides a maximum output of 120 watts (5A at 24V), which is adequate for less demanding applications. While both power supplies are efficient for their intended uses, the SAMA Black is clearly designed for high performance, whereas the LAWLRON model caters to more modest power requirements.
Design and Build Quality
The SAMA Black features a fully modular design, allowing users to connect only the necessary cables for their systems. This design not only improves airflow but also enhances cable management, contributing to a cleaner build environment. Additionally, it is built with premium Japanese capacitors, which are known for their reliability and stability. On the other hand, the 24Vdc Power Supply has a simpler design intended for DIN rail installation, which is effective for industrial applications but lacks the advanced features and build quality found in the SAMA Black.
Compatibility
Compatibility is a crucial consideration when selecting a power supply. The SAMA Black Power Supply is compatible with the latest ATX 3.1 standards and comes with native PCIe 5.1 ports and cables, making it suitable for modern GPUs like the RTX 3090 Ti and RTX 40 series. This level of compatibility ensures that users can build or upgrade their systems with confidence. In contrast, the 24Vdc Power Supply is designed for specific industrial applications, providing 24V output without the need for advanced compatibility considerations. Therefore, the SAMA Black offers much greater versatility for a gaming or high-performance workstation setup.
Noise Levels
Noise levels can significantly impact user experience, particularly in gaming or workstation environments. The SAMA Black operates with a 120mm ECO fan featuring Fluid Dynamic Bearing technology, producing noise levels as low as ≤20dB-A. This ensures quiet operation even under heavy loads, making it an excellent choice for those who prioritize a silent computing experience. In comparison, the 24Vdc Power Supply does not specify noise levels, which may be an important consideration for users looking for a quieter solution. Given the high-performance nature of the SAMA Black, it is evident that this power supply is engineered for both efficiency and noise reduction.
Warranty and Reliability
The SAMA Black comes with a 5-year warranty, reflecting the manufacturer's confidence in its durability and reliability, especially given its use of high-quality components. This extended warranty provides peace of mind for consumers investing in high-end components. Conversely, the 24Vdc Power Supply does not mention a warranty period, which may raise questions regarding its long-term reliability. The difference in warranty offerings highlights the contrasting market positions and intended uses of these products.
Price Comparison
The SAMA Black 850W Power Supply is priced at C$89.99, making it a significant investment for those needing a robust and efficient power supply for high-performance systems. In contrast, the 24Vdc Power Supply is much more affordable at C$39.89, appealing to budget-conscious consumers or those requiring basic power supply functionality. While the price difference is substantial, it reflects the differing capabilities and target markets of each product.
Which should you buy?
Ultimately, the choice between the SAMA Black 850W Power Supply and the 24Vdc Power Supply din Rail 5A depends on your specific needs. If you are building a high-performance gaming rig or workstation, the SAMA Black offers superior output, efficiency, and features, making it worth the investment. However, for basic industrial applications or projects requiring 24V power, the 24Vdc Power Supply is a practical and cost-effective solution. Therefore, consider your intended use and budget before making a decision.
versusfinder.com is a participant in the Amazon.ca Associates Program. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.

