be quiet! Pure Power 13 M 1000W Power Supply, 80 vs CORSAIR RM850e Fully Modular Low-Noise ATX Power

Pricing Comparison

When it comes to pricing, the CORSAIR RM850e is significantly more affordable at $94.99 compared to the be quiet! Pure Power 13 M, which retails for $139.90. This makes the CORSAIR power supply about 32% cheaper than its competitor. The price difference could be a crucial factor for budget-conscious consumers, especially when both power supplies offer similar certifications and features. The RM850e not only presents a lower upfront cost but also competes effectively with the Pure Power 13 M in performance and efficiency.

Efficiency Ratings

Both the be quiet! Pure Power 13 M and the CORSAIR RM850e boast high efficiency ratings, but they are certified under different standards. The Pure Power 13 M is 80 PLUS Gold certified, indicating an impressive operational efficiency of up to 94.4%. On the other hand, the RM850e achieves Cybenetics Gold efficiency, which also signifies commendable energy savings, although the exact efficiency rating isn't explicitly stated. This means both units are designed to minimize power consumption, but the Pure Power 13 M may have a slight edge in maximized efficiency under load conditions.

Modular Cabling

The CORSAIR RM850e features a fully modular design, allowing users to connect only the necessary cables for their systems. This design enhances cable management and airflow, ensuring a cleaner build. Conversely, the be quiet! Pure Power 13 M is semi-modular, which means it comes with some cables pre-attached. While this still allows for some flexibility, it may not provide the same level of customization as the RM850e. For builders who prioritize aesthetics and airflow, the modular design of the RM850e could be a decisive factor.

Cooling Technology

Cooling capabilities are critical for maintaining system stability and longevity. The be quiet! Pure Power 13 M utilizes a semi-passive zero-RPM cooling mode, where the fan remains off during low-load scenarios for quieter operation. This feature is ideal for users who prioritize silence in their builds. In comparison, the CORSAIR RM850e employs a 120mm rifle-bearing fan with a specially calculated fan curve to minimize noise, even under full load. While both power supplies focus on low noise, the Pure Power 13 M's unique zero-RPM mode might appeal more to users looking for silent operation during light tasks.

Compatibility with Modern Hardware

Both power supplies are compliant with the latest ATX 3.1 and PCIe 5.1 standards, ensuring compatibility with next-generation graphics cards and high-performance systems. The be quiet! Pure Power 13 M comes with a native 12V-2x6 connector, accommodating the latest GPUs effortlessly. Similarly, the CORSAIR RM850e includes the necessary 12V-2x6 cable, supporting the latest hardware demands. This aspect makes both power supplies future-proof for upcoming PC builds, ensuring they can handle the increasing power requirements of modern components.

Capacitor Quality

The quality of capacitors plays a significant role in the reliability and performance of a power supply. The be quiet! Pure Power 13 M's design includes advanced LLC topology for superior voltage regulation and efficiency, which enhances system stability. In contrast, the CORSAIR RM850e features 105°C-rated capacitors, promising steady and reliable power delivery. While both power supplies focus on stability, the Pure Power 13 M may offer a slight advantage in voltage regulation due to its advanced design. However, the CORSAIR's use of high-quality capacitors also ensures dependable performance.

User Experience and Build Quality

In terms of user experience, both power supplies receive praise for their build quality. The be quiet! Pure Power 13 M is designed for quiet operation and efficient cooling, making it an excellent choice for gaming and media creation PCs. Its reputation for reliability is bolstered by its solid construction. The CORSAIR RM850e is also recognized for its reliability, backed by a seven-year warranty. The fully modular design aids in creating a cleaner build, adding to the overall user experience. Ultimately, both units offer high-quality construction, but the RM850e's modularity might enhance user satisfaction during installation.

Which should you buy?

Choosing between the be quiet! Pure Power 13 M and the CORSAIR RM850e largely depends on your specific needs and budget. If you prioritize a lower price and a fully modular design, the RM850e stands out as the better option at approximately $94.99, making it about 32% less expensive than the Pure Power 13 M. However, if silent operation and superior efficiency ratings are at the forefront of your requirements, the Pure Power 13 M may justify its higher price of $139.90. Both power supplies are excellent choices, but your decision should hinge on whether you prioritize cost savings or specific performance features.