MSI MAG A550BN vs SAMA Black 850W Power Supply - Fully Modular 80 Plus Gold Certified ATX 3.1 & PC

Pricing Comparison

When it comes to pricing, the MSI MAG A550BN is more affordable than the SAMA Black 850W Power Supply. The MSI MAG A550BN is priced at C$84.99, while the SAMA Black is priced at C$89.99. This means that the SAMA Black costs C$5.00 more than the MSI MAG A550BN. While the price difference may seem minor, it can become significant if you're working within a tight budget or looking to maximise your spending on other components in your build.

Efficiency Ratings

The efficiency of a power supply is crucial for energy savings and system performance. The MSI MAG A550BN is 80 PLUS Bronze certified, indicating a certain level of efficiency, but the SAMA Black takes it a step further with its 80 PLUS Gold certification. The Gold certification means that the SAMA Black achieves up to 91.15% efficiency at 50% load, which significantly reduces energy waste compared to the Bronze-rated MSI MAG A550BN. This higher efficiency can lead to lower electricity bills and a more stable power supply for your components.

Design and Cable Management

The SAMA Black 850W Power Supply features a fully modular design, allowing users to connect only the necessary cables for their system. This design promotes streamlined cable management, ensuring a cleaner build and improved airflow, which can enhance cooling performance. In contrast, the MSI MAG A550BN does not specify a modular design, which may result in more visible cables and potentially poorer airflow. For those who prioritise aesthetics and airflow in their builds, the SAMA Black offers a clear advantage.

Compatibility and Future-Proofing

When considering compatibility, the SAMA Black is designed to meet the latest ATX 3.1 standards and includes native PCIe 5.1 ports. This ensures that it can seamlessly support high-end GPUs like the RTX 3090 Ti and RTX 40 series. The MSI MAG A550BN does not provide specific details about its compatibility with newer standards, which may limit its future-proofing capabilities. For users looking to invest in high-performance components now or in the near future, the SAMA Black is the more suitable option.

Cooling and Noise Levels

Noise levels are an important factor for many PC builders, especially for those who prefer a quiet operating environment. The SAMA Black is equipped with a 120mm ECO fan featuring Fluid Dynamic Bearing (FDB) technology, allowing it to operate quietly with noise levels as low as ≤20dB-A, even under heavy loads. On the other hand, the MSI MAG A550BN mentions a "low noise fan" but does not provide specific noise level metrics. The quieter operation of the SAMA Black can be particularly beneficial in media centres or quiet office environments.

Warranty and Reliability

Both power supplies offer a 5-year limited warranty, ensuring long-term reliability for users. This warranty period reflects the manufacturers' confidence in their products. However, the SAMA Black's use of premium Japanese capacitors is noteworthy. These capacitors are known for providing stable power delivery and enhancing the lifespan of the power supply. While the MSI MAG A550BN is also backed by a 5-year warranty, it lacks the additional assurance of premium components.

Target Audience

The MSI MAG A550BN is ideal for budget-conscious users who are looking for a reliable power supply without the need for the latest features. It offers a decent efficiency rating and a competitive price point. Conversely, the SAMA Black is targeted towards gamers and high-performance PC builders who demand the best in efficiency, modularity, and compatibility with cutting-edge components. The additional features and certification make it worth the higher price for those users.

Which should you buy?

Choosing between the MSI MAG A550BN and the SAMA Black 850W Power Supply ultimately depends on your specific needs and budget. If you are looking for a cost-effective solution and are not concerned about the latest standards or modularity, the MSI MAG A550BN at C$84.99 is a solid choice. However, if you desire greater efficiency, modular design for cable management, and future-proofing capabilities, the SAMA Black at C$89.99 is the superior option. The additional benefits may justify the higher price for many builders, particularly those investing in high-performance systems.