SAMA Black 850W Power Supply - Fully Modular 80 Plus Gold Certified ATX 3.1 & PC vs CORSAIR CX550 80 Plus Bronze Non Modular Low-Noise ATX 550 Watt Power Supply - N

Overview of the Power Supplies

When choosing a power supply, two strong contenders are the SAMA Black 850W Power Supply and the CORSAIR CX550 80 Plus Bronze. The SAMA model is more powerful with an 850W rating, whereas the CORSAIR version offers 550W. This significant difference in wattage is crucial for users with high-performance components, particularly those requiring substantial power, such as advanced graphics cards. The SAMA power supply is priced at C$89.99, while the CORSAIR comes in slightly cheaper at C$84.99.

Efficiency Ratings

The SAMA Black power supply boasts an 80 PLUS Gold certification, achieving up to 91.15% efficiency at 50% load. This high efficiency not only reduces energy waste but also generates less heat, promoting longer component life. In contrast, the CORSAIR CX550 is 80 PLUS Bronze certified, delivering up to 88% efficiency. While both power supplies are efficient, the SAMA’s Gold rating provides a noticeable edge in energy savings, particularly for users who run their systems under load regularly.

Modularity and Cable Management

One of the standout features of the SAMA Black is its fully modular design, which allows users to connect only the cables necessary for their specific setup. This design facilitates streamlined cable management, leading to a cleaner build and improved airflow. In comparison, the CORSAIR CX550 is a non-modular supply, which means all cables are permanently attached. This can lead to excess cables cluttering the interior of your case, potentially impacting airflow and aesthetics, especially in compact builds.

Cooling Solutions

The SAMA Black is equipped with a 120mm ECO fan that utilises Fluid Dynamic Bearing (FDB) technology, achieving noise levels as low as ≤20dB-A. This design ensures quiet operation, even under heavy load, making it suitable for noise-sensitive environments. The CORSAIR CX550 also features a 120mm low-noise cooling fan that operates at lower speeds under light loads to reduce noise. However, it lacks the advanced FDB technology, which may result in slightly higher noise levels compared to the SAMA during intensive tasks.

Compatibility with Modern Components

The SAMA Black power supply supports the latest ATX 3.1 standards and includes native PCIe 5.1 ports, making it an excellent choice for users with high-end GPUs, such as the RTX 3090 Ti and the RTX 40 series. This future-proofing is significant for gamers and professionals who may upgrade their systems frequently. On the other hand, the CORSAIR CX550 is more limited in compatibility with newer components, focusing on delivering reliable power to mid-range systems without the latest PCIe technologies.

Build Quality and Reliability

The SAMA Black is constructed with premium Japanese capacitors, ensuring stable power delivery and long-term reliability. It also comes with a five-year warranty, showcasing the manufacturer’s confidence in its durability. The CORSAIR CX550, while reliable, utilizes standard capacitors and is backed by a three-year warranty. This difference in build quality and warranty period could influence long-term performance and peace of mind for users investing in their systems.

Aesthetic Appeal

Aesthetically, both power supplies offer sleek designs that can complement a variety of builds. The SAMA Black features a fully modular setup with flat cables, enhancing overall cable management and visual appeal. The black powder-coated casing of the CORSAIR CX550 also ensures it fits well within most PC cases. However, the SAMA’s modularity may provide a cleaner look for users who prioritise aesthetics in their builds, especially in transparent cases.

Which should you buy?

Choosing between the SAMA Black 850W Power Supply and the CORSAIR CX550 80 Plus Bronze largely depends on your specific needs. If you require higher wattage for demanding components and value efficiency, modularity, and quiet operation, the SAMA Black at C$89.99 stands out as the superior choice. Conversely, if you're working with a standard mid-range setup and prefer a budget-friendly option, the CORSAIR CX550 at C$84.99 will suffice, albeit with some limitations in terms of future-proofing and noise levels. Ultimately, your choice should align with your power requirements, budget, and aesthetic preferences.