SAMA Black 850W Power Supply - Fully Modular 80 Plus Gold Certified ATX 3.1 & PC vs CORSAIR CX650M

Overview of the SAMA Black 850W Power Supply

The SAMA Black 850W Power Supply is a high-performance unit designed for gamers and PC builders who demand efficiency and reliability. With a price of C$89.99, this fully modular power supply offers an 80 PLUS Gold certification, indicating its efficiency at up to 91.15% under optimal load conditions. This makes it an excellent choice for high-end gaming setups, especially for users with powerful graphics cards like the RTX 3090 Ti and the RTX 40 series.

The SAMA power supply also boasts a fully modular design, allowing users to connect only the necessary cables, which promotes better cable management and airflow. It features a quiet 120mm ECO fan with Fluid Dynamic Bearing technology, ensuring minimal noise levels, even under heavy loads. The inclusion of premium Japanese capacitors further assures users of stable power delivery and longevity, backed by a 5-year warranty.

Overview of the CORSAIR CX650M

The CORSAIR CX650M is a semi-modular power supply priced at C$109.99. With a power output of 650W, it is designed to support a range of GPUs, including the latest Nvidia RTX 50-series and older 40-series cards. Its semi-modular design means that while some cables are attached, users can choose which additional cables to include, offering a balance between convenience and cable management.

This power supply also meets the latest ATX 3.1 and PCIe 5.1 standards, ensuring reliable power delivery and connectivity. The CX650M features a 120mm low-noise fan that operates quietly under low and medium loads, making it an appealing option for those who prioritise a quiet computing environment. While it doesn't match the SAMA's 850W output, it still provides ample performance for most gaming rigs.

Efficiency and Certifications

When it comes to efficiency, the SAMA Black 850W Power Supply outshines the CORSAIR CX650M with its 80 PLUS Gold certification. This certification guarantees that the SAMA model can achieve up to 91.15% efficiency at 50% load, which translates into lower energy costs and less heat generated. In contrast, while the CORSAIR CX650M does meet the ATX 3.1 and PCIe 5.1 standards, it does not boast a specific efficiency rating as strong as that of the SAMA.

The dual certifications of the SAMA not only enhance system stability but also extend the lifespan of connected components, making it a more future-proof choice for users who may upgrade their systems frequently. Thus, in terms of efficiency and certification, the SAMA clearly provides superior performance.

Design and Build Quality

The SAMA Black 850W Power Supply features a fully modular design that allows users to connect only the cables they need, which promotes a cleaner build and better airflow. It also uses flat cables, making cable management more straightforward. The 120mm ECO fan with Fluid Dynamic Bearing technology is engineered for quiet operation, ensuring that noise levels remain low, even under maximum load.

On the other hand, the CORSAIR CX650M employs a semi-modular design, which means that while it provides flexibility, some cables are permanently attached. The CX650M also includes a 120mm low-noise fan that spins silently under lower loads, but its build quality does not reach the level of the SAMA when considering factors like modularity and noise reduction. Hence, in terms of design and build quality, the SAMA holds the edge.

Cooling Performance

Cooling performance is a critical aspect of any power supply, and the SAMA Black 850W Power Supply excels in this area. With its 120mm ECO fan, it maintains noise levels as low as ≤20dB-A, ensuring that the unit remains virtually silent during operation. This is particularly beneficial for gamers and content creators who require a quiet environment for their work or leisure.

The CORSAIR CX650M also features a 120mm low-noise fan, designed to operate quietly under low to medium loads. However, it lacks the specific noise level rating provided for the SAMA. Given the SAMA's superior noise performance and efficient cooling capabilities, it is the better choice for users focused on maintaining a quiet system.

Compatibility and Connectivity

The SAMA Black 850W Power Supply is designed with modern compatibility in mind, featuring ATX 3.1 and PCIe 5.1 support. This ensures that it can seamlessly connect with high-end GPUs, including the latest graphics cards on the market. Its fully modular design also allows for the easy addition or removal of cables, making it a versatile choice for various builds.

Conversely, the CORSAIR CX650M offers native 12V-2x6 cables, which eliminate the need for adapters when using the latest Nvidia RTX 50-series GPUs and older models. While it provides ample power for mid-range gaming setups, it does not offer the same level of future-proofing as the SAMA. Therefore, in terms of compatibility and connectivity, the SAMA offers greater flexibility for high-end users.

Price Comparison

The SAMA Black 850W Power Supply is priced at C$89.99, making it a competitive option in the power supply market, especially considering its 850W output and efficiency ratings. In contrast, the CORSAIR CX650M is priced at C$109.99. While it offers solid performance, it comes at a higher cost for lower wattage output. For users looking to maximise their investment, the SAMA presents a more cost-effective option, particularly for high-performance builds that require more power.

Which should you buy?

Choosing between the SAMA Black 850W Power Supply and the CORSAIR CX650M ultimately depends on your specific needs and budget. If you require a high-efficiency power supply with superior wattage, modular design, and quiet operation, the SAMA is the clear winner at C$89.99. However, if you have a more modest setup and prefer a reliable semi-modular option, the CORSAIR CX650M at C$109.99 is still a solid choice. Overall, for high-performance gamers and PC builders, the SAMA stands out as the best option.