be quiet! Pure Power 12 650W PSU | 80 Plus Gold | vs CORSAIR RM850x Fully Modular Low-Noise ATX Power

Price Comparison

When it comes to pricing, the be quiet! Pure Power 12 650W PSU is priced at $64.90, making it significantly cheaper than the CORSAIR RM850x, which retails for $161.93. This difference of about $97.03 means that the be quiet! option is approximately 60% less expensive. For budget-conscious consumers looking for reliable power supplies, the be quiet! model presents a compelling choice, especially for basic or medium-performance builds.

Performance and Efficiency

In terms of performance, the be quiet! Pure Power 12 boasts an efficiency rating of up to 92.7% with its 80 PLUS Gold certification, while the CORSAIR RM850x has a slightly lower Cybenetics Gold efficiency rated at up to 91%. This marginal difference may seem small, but it results in slightly lower power consumption and heat generation for the Pure Power 12. The be quiet! model also provides 650W of continuous power on a single 12V rail, which is designed to handle short power spikes effectively. Meanwhile, the RM850x offers 850W, giving it a higher overall capacity for demanding systems.

Design and Build Quality

Both power supplies are designed with quality in mind, but they feature different approaches. The be quiet! Pure Power 12 has a temperature-controlled 120mm fan designed for silent operation, aiming to reduce noise levels significantly during typical loads. On the other hand, the CORSAIR RM850x features a 140mm fluid dynamic bearing fan that also focuses on low noise but adds to its overall cooling efficiency. Each design caters to users who value quiet operation, but the be quiet! model may have an edge for users prioritizing silence in their builds.

Modular Capabilities

Modularity is a key feature for many PC builders, and both power supplies excel in this area. The be quiet! model offers fully sleeved and flat modular cables, which not only simplify installation but also enhance airflow within the case. Conversely, the CORSAIR RM850x is fully modular with ultra-flexible embossed cables that allow builders to connect only the necessary components. This can lead to a neater build and improved airflow as well. Both options provide excellent modularity, but the choice may come down to personal preference regarding cable aesthetics.

Compatibility and Future-Proofing

In terms of compatibility, both power supplies support the ATX 3.1 standard and PCIe 5.1 graphics cards. The be quiet! Pure Power 12 includes a native 12V-2x6 connector, making it immediately compatible with the latest GPUs without the need for adapters. Similarly, the CORSAIR RM850x also features a native 12V-2x6 connector, ensuring it meets the demands of modern gaming and high-performance tasks. This makes both power supplies suitable for future upgrades, appealing to users who want to invest in a power supply that won't quickly become obsolete.

Warranty and Support

Warranty offerings can greatly influence consumer decision-making, and both the be quiet! Pure Power 12 and the CORSAIR RM850x come with a generous 10-year warranty. This long warranty period reflects the manufacturers' confidence in their products' durability and reliability. Such extensive coverage is reassuring for consumers, as it ensures that if any issues arise, they will be covered for an extended time. Thus, both products provide equal peace of mind in terms of warranty support.

User Experience and Reviews

While specific user reviews are not provided in the data, the price difference and features suggest that the be quiet! Pure Power 12 might cater more to budget-conscious users or those building quieter systems. On the other hand, the CORSAIR RM850x, being a higher capacity and slightly more efficient unit, may appeal to gamers or users with more demanding power requirements. The choice between these two may come down to individual user needs and preferences, particularly regarding budget versus performance demands.

Which should you buy?

Ultimately, choosing between the be quiet! Pure Power 12 650W PSU and the CORSAIR RM850x comes down to your specific needs and budget. If you're looking for a cost-effective solution that excels in quiet operation and efficiency, the be quiet! model at $64.90 is an excellent choice. However, if you require more power for high-performance components and prefer the flexibility of a fully modular design, the CORSAIR RM850x, priced at $161.93, may justify its higher cost. Each power supply has its strengths, so consider your priorities before making a decision.