ASRock PRO-650G Power Supply - 650W 80 Plus Gold vs CORSAIR RM850x Fully Modular Low-Noise ATX Power

Pricing Comparison

The ASRock PRO-650G Power Supply is significantly more affordable than the CORSAIR RM850x, coming in at $49.99 compared to $161.93 for the latter. This positions the ASRock option as about 69% cheaper than its Corsair counterpart. For users on a budget, this price difference is substantial, especially for those seeking reliable performance without breaking the bank. While the lower price may suggest fewer features, the ASRock POWER-650G still provides essential capabilities suitable for mid-range systems.

Efficiency Ratings

In terms of efficiency, the CORSAIR RM850x outperforms the ASRock PRO-650G, boasting a Cybenetics Gold certification with an efficiency rating of up to 91%. Meanwhile, the ASRock model is rated at 80 PLUS Gold efficiency, delivering up to 90% efficiency. Although both power supplies offer excellent energy efficiency, the slight edge in performance of the CORSAIR model may result in lower power consumption and heat generation over time, which is an important consideration for energy-conscious users.

Modular Design

The CORSAIR RM850x features a fully modular design, allowing users to connect only the cables necessary for their build. This can simplify installation and improve airflow within the case. In contrast, the ASRock PRO-650G does not offer a fully modular design, which may lead to more cluttered cable management. For those who prioritize clean builds and optimal airflow, the modularity of the CORSAIR could be a decisive factor.

Compatibility Features

Both power supplies meet the ATX 3.1 standard, ensuring compatibility with modern components. However, the CORSAIR RM850x has the added benefit of supporting PCIe 5.1 and includes a native 12V-2x6 connector. This specific connector is essential for powering the latest graphics cards directly, eliminating the need for adapters. The ASRock PRO-650G, while compatible with modern setups, does not provide this advanced connectivity, which may limit its usability for high-end gaming configurations.

Cooling Solutions

The cooling mechanisms of both models are designed to minimize noise while providing reliable performance. The ASRock PRO-650G features a quiet 120mm fan, while the CORSAIR RM850x is equipped with a 140mm FDB fan. Generally, larger fans can move more air at lower RPMs, which often results in quieter operation. Thus, while both options are engineered for low noise, the increased fan size of the CORSAIR model may offer better cooling efficiency, especially under load.

Build Quality and Longevity

The build quality of both power supplies is commendable, but they differ in specific components. The ASRock PRO-650G utilizes all-Taiwanese capacitors, which are known for their durability and longevity. On the other hand, the CORSAIR RM850x uses 100% Japanese 105°C-rated electrolytic capacitors, which are typically regarded as top-tier for performance and reliability. The use of premium components in the RM850x suggests a potentially longer lifespan and better electrical performance over time compared to the ASRock model.

Warranty and Support

When it comes to warranty, the CORSAIR RM850x offers a ten-year warranty, significantly longer than the three-year warranty provided with the ASRock PRO-650G. A longer warranty can provide peace of mind to users, suggesting higher confidence from the manufacturer regarding the product's durability. Additionally, both brands offer customer support, but the longer warranty period of the CORSAIR may be more appealing for users who prioritize long-term reliability.

Which should you buy?

Choosing between the ASRock PRO-650G and the CORSAIR RM850x ultimately depends on your specific needs and budget. If you are looking for a budget-friendly option that still provides reliable performance, the ASRock PRO-650G is an excellent choice at $49.99. However, if you are willing to invest more for superior efficiency, modularity, and advanced compatibility features, the CORSAIR RM850x at $161.93 could offer better long-term value, especially for high-performance builds. Ultimately, the decision hinges on whether you prioritize cost savings or advanced features.