MSI MAG A750GL PCIE5 Power Supply Unit vs NZXT C850 SFX Gold - 850W SFX ATX 3.1 Power Supply - 80 Plus Gold - Cybenetics P

Design and Form Factor

The MSI MAG A750GL PCIE5 Power Supply Unit features a compact ATX design, while the NZXT C850 SFX Gold adopts a smaller SFX form factor. The compactness of the NZXT unit is particularly beneficial for small form factor (SFF) builds, allowing better space efficiency without sacrificing power delivery. The MSI unit, with its ATX 3.0 compatibility, measures 140mm in length, making it slightly larger but still manageable for most cases. The SFX form factor of the NZXT allows it to fit into tighter spaces, which is increasingly important in modern builds that favour compactness.

Power Output and Efficiency

In terms of power output, the MSI MAG A750GL provides 750W, while the NZXT C850 SFX Gold offers a robust 850W. Both units are 80 PLUS Gold certified, ensuring efficient energy consumption with up to 90% efficiency for the MSI model. The NZXT unit also boasts premium efficiency ratings, including a Cybenetics Platinum rating, which indicates lower heat generation and increased efficiency. This difference in power output means that the NZXT can support more demanding components, making it a better choice for high-performance systems.

GPU Compatibility

The MSI MAG A750GL supports PCIe 5.0 graphics cards with a native 16-pin connector capable of delivering up to 450W to modern GPUs, which is essential for high-end gaming and computing. In contrast, the NZXT C850 SFX Gold's ATX 3.1 certification along with its 600W 12V-2x6 connector ensures reliable power delivery for contemporary graphics cards. This makes the NZXT unit more versatile for those looking to future-proof their builds with the latest GPU technology, while the MSI is optimised for high-performance GPUs specifically.

Cooling Solutions

Cooling performance is crucial for power supply units, and both the MSI MAG A750GL and NZXT C850 SFX Gold incorporate fluid dynamic bearing (FDB) fans to enhance cooling efficiency. The MSI unit features a larger 120mm fan, which typically aids in better airflow and cooling capacity. Meanwhile, the NZXT uses a 92mm FDB fan with a Zero RPM mode, allowing for silent operation during low loads. Although both designs aim for quiet performance, the larger fan size of the MSI could contribute to more effective cooling under heavy loads.

Build Quality and Durability

Durability is a key aspect of power supplies, and both the MSI and NZXT models showcase robust designs. The MSI MAG A750GL includes a full-bridge LLC with a DC-to-DC converter and active PFC design, ensuring comprehensive protection against overcurrent, overvoltage, and other potential hazards. The NZXT C850 SFX Gold also emphasises reliability, featuring low ripple noise and tight voltage regulation to maintain system stability. Both units are designed to last, but the MSI's 7-year warranty may provide additional peace of mind for users concerned about long-term durability.

Noise Levels

Noise levels are an important consideration for many users, particularly in quiet environments. The NZXT C850 SFX Gold has a Cybenetics A- noise rating, indicating a quieter operation compared to many competitors. The inclusion of a Zero RPM mode helps to minimise noise during low loads, making it an appealing choice for users who value a silent build. On the other hand, while the MSI MAG A750GL is designed for efficient cooling, its larger fan may generate more noise under heavy load. Thus, if noise reduction is a priority, the NZXT model may have the advantage.

Pricing and Value

The MSI MAG A750GL is priced at £74.99, making it a cost-effective option for those seeking a reliable power supply with solid features. In contrast, the NZXT C850 SFX Gold is priced at £129.98, reflecting its higher wattage and compact design. While the MSI offers great value for mid-range builds, the premium for the NZXT can be justified for users needing more power and space efficiency. Ultimately, the choice may depend on the specific requirements of the build and the user's budget.

Which should you buy?

Ultimately, the choice between the MSI MAG A750GL PCIE5 Power Supply Unit and the NZXT C850 SFX Gold largely depends on your specific needs and preferences. If you are building a compact system and require higher wattage with advanced efficiency ratings, the NZXT is the better option despite its higher price. Conversely, if you are looking for a cost-effective power supply that still offers solid performance and features for standard builds, the MSI is an excellent choice. Each power supply has its strengths, making it essential to consider your individual requirements when making a decision.