ASRock PRO-650G Power Supply - 650W 80 Plus Gold vs CORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready Fully

Price Comparison

When it comes to pricing, the ASRock PRO-650G Power Supply is significantly more affordable than the CORSAIR RM1000x. Priced at $49.99, the ASRock model is about 72% cheaper than the RM1000x, which retails for $179.99. This substantial price difference makes the ASRock an appealing option for budget-conscious consumers seeking reliable power supply solutions. While the lower price does indicate a difference in wattage and features, the ASRock offers solid performance for mid-range builds, making it an excellent choice for those who need dependable power without breaking the bank.

Power Output

The power output distinguishes the two products markedly, with the CORSAIR RM1000x providing 1000W compared to the ASRock's 650W. This 350W difference is substantial and crucial for high-end gaming setups or systems with multiple graphics cards, where higher wattage is essential for stability and performance. The ASRock, while offering sufficient power for mid-range systems with its 650W output and 54.1A on the +12V rail, may struggle under the demands of more powerful components. Therefore, users planning to build a high-performance rig should consider the RM1000x for its higher capacity.

Efficiency Ratings

In terms of energy efficiency, the CORSAIR RM1000x outperforms the ASRock with its Cybenetics Gold certification, achieving up to 91% efficiency. The ASRock PRO-650G, rated at 80 PLUS Gold, delivers up to 90% efficiency. While both power supplies are efficient, the RM1000x's higher rating indicates marginally lower power consumption and heat output. This difference not only impacts long-term operational costs but also contributes to a cooler and quieter system, making the RM1000x a better choice for users prioritizing efficiency in their builds.

Modular Design

The modular design of the CORSAIR RM1000x offers significant advantages over the ASRock PRO-650G, which lacks this feature. The RM1000x’s fully modular cabling allows users to connect only the cables they need, reducing clutter and improving airflow within the case. This flexibility can lead to a cleaner build and easier installation, particularly in compact spaces. In contrast, the ASRock’s design, while functional, does not provide the same level of customization and convenience that comes with a fully modular power supply.

Cooling Solutions

Cooling solutions are another area where the two power supplies diverge. The CORSAIR RM1000x features a 140mm Fluid Dynamic Bearing (FDB) fan designed for low noise operation, enhancing the overall acoustic performance of a system. In comparison, the ASRock PRO-650G uses a 120mm fan, which, while balanced for quiet operation, may not achieve as low noise levels as the RM1000x under heavy load. This can be an important consideration for users who prioritize quiet computing, especially in environments where noise levels need to be minimized.

Build Quality and Components

Build quality is critical in power supplies, and both the ASRock and CORSAIR models utilize high-quality components. The ASRock PRO-650G is built with all-Taiwanese capacitors, known for their reliability and durability. Meanwhile, the CORSAIR RM1000x boasts 100% Japanese 105°C-rated electrolytic capacitors, which generally deliver superior performance and longevity. The choice of components in the RM1000x gives it an edge in terms of overall durability and reliability, making it a better investment for long-term use.

Warranty and Support

When it comes to warranty and customer support, the CORSAIR RM1000x offers a more extended warranty period of ten years, compared to the ASRock PRO-650G's three-year warranty. This longer warranty reflects the confidence that Corsair has in their product's durability and reliability. Additionally, the support provided by Corsair is often regarded as superior, offering better assistance to customers with inquiries or issues. For users seeking peace of mind and robust support, the RM1000x presents a compelling advantage.

Which should you buy?

In deciding between the ASRock PRO-650G and the CORSAIR RM1000x, your choice will largely depend on your specific needs and budget. The ASRock is an excellent option for those on a tighter budget looking for reliable power for mid-range systems. However, if you're building a high-performance rig requiring significant power output, efficiency, and superior features, the CORSAIR RM1000x is worth the investment despite its higher price. Ultimately, consider what aspects—such as wattage, efficiency, modular design, and warranty—are most important to you in your power supply choice.