be quiet! Power Zone 2 1000W ATX 3.1 PSU | 80 Plus vs NZXT C850 Gold Core - 850W ATX 3.1 Power Supply -
Updated August 2026 — be quiet! Power Zone 2 1000W ATX 3.1 PSU | 80 Plus wins on cooling and noise level, NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - wins on modularity and compatibility.
The be quiet! Power Zone 2 offers superior efficiency and cooling, while the NZXT C850 Gold Core is a more budget-friendly option with modular design.
Why be quiet! Power Zone 2 1000W ATX 3.1 PSU | 80 Plus is better
Efficiency
Power Zone 2 has 80 PLUS Platinum rating.
Cooling
Larger fan for better heat dissipation.
Future-proofing
More connectors for next-gen GPUs.
Why NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - is better
Price
C850 Gold Core is 37% cheaper.
Modularity
Fully modular design for better cable management.
Warranty
C850 Gold Core has a 7-year warranty.
Overall score
Specifications
| Spec | be quiet! Power Zone 2 1000W ATX 3.1 PSU | 80 Plus | NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - |
|---|---|---|
| Efficiency Rating | 80 PLUS Platinum | 80 PLUS Gold |
| Cooling Type | Zero RPM | Zero RPM |
| Modular Design | No | Fully Modular |
| Fan Size | 140mm | 135mm |
| Connector Type | 12V-2x6 | 12V-2x6 |
Dimension comparison
Overview
When comparing the be quiet! Power Zone 2 and the NZXT C850 Gold Core, both power supplies shine in their respective categories, but they cater to slightly different needs and budgets. The Power Zone 2 is priced at $159.90, while the C850 Gold Core is significantly more affordable at $99.99, making it about 37% cheaper. Each unit has features that appeal to gamers and PC builders, ensuring they provide reliable power for modern systems.
Efficiency Ratings
The be quiet! Power Zone 2 boasts an impressive 80 PLUS Platinum and Cybenetics Platinum efficiency rating, achieving up to 94% efficiency. This high level of efficiency results in lower energy consumption and cooler operation, which is ideal for high-performance systems. In contrast, the NZXT C850 Gold Core, while still efficient with its 80 PLUS Gold and Cybenetics Platinum rating, operates at a slightly lower efficiency compared to the Power Zone 2. However, it still offers a commendable performance, reducing heat and power draw effectively.
Noise Levels
The noise levels are a critical factor for users looking to build a quiet PC. The Power Zone 2 features a semi-passive Zero RPM cooling mode, where the fan operates only under heavy loads. This design allows for near-silent operation during lighter tasks. Similarly, the NZXT C850 Gold Core has a Zero RPM mode as well, ensuring whisper-quiet performance, especially under light workloads. While both are engineered for quiet operation, the Power Zone 2's larger Pure Wings 3 fan may provide a slight edge in cooling efficiency and noise reduction during intensive tasks.
Cooling Solutions
Cooling technology plays a vital role in maintaining system performance and longevity. The be quiet! Power Zone 2 utilizes a large Pure Wings 3 140mm fan designed for optimal airflow and silent performance. Its innovative design and efficient cooling ensure the PSU remains operationally cool. On the other hand, the NZXT C850 Gold Core employs a 135mm fluid dynamic bearing fan that also prioritizes quiet operation. Both solutions are effective, yet the Power Zone 2's larger fan may handle heat dissipation more effectively in high-demand scenarios.
Modular Design
When it comes to cable management, the NZXT C850 Gold Core excels with its fully modular design. This feature allows users to connect only the cables they need, resulting in a cleaner build and improved airflow. The be quiet! Power Zone 2 does not highlight modularity in its description, suggesting a more traditional approach. For users who prioritize an uncluttered setup, the C850 Gold Core offers significant advantages, particularly for those with complex builds or limited space.
Compatibility with Modern Systems
Both power supplies are designed to support contemporary hardware, including next-gen GPUs. The Power Zone 2 features a 90° angled 12V-2x6 connector, ensuring compatibility with upcoming PCIe 5.1 graphics cards alongside three PCIe 6+2-pin connectors for current models. The NZXT C850 Gold Core also supports modern GPUs with its dual-color 12V-2x6 connector, ensuring stable power delivery. While both units are future-proofed, the Power Zone 2 offers a slight edge with its additional connectors, catering to a wider range of high-performance graphics cards.
Build Quality and Warranty
Quality components are essential for a reliable power supply. The be quiet! Power Zone 2 emphasizes high-class technology and robust design, which is critical for ensuring longevity and stability in high-performance systems. The NZXT C850 Gold Core also boasts premium 105°C-rated capacitors, which ensure stable performance across various loads. Furthermore, it comes with a 7-year warranty, offering peace of mind to users regarding its durability and reliability. While both units are built to last, the C850 Gold Core's extended warranty signifies confidence in its durability.
Price Comparison
The price difference between these two units is significant. The be quiet! Power Zone 2 is priced at $159.90, while the NZXT C850 Gold Core is available for $99.99. This makes the C850 Gold Core about 37% cheaper than the Power Zone 2, making it a more budget-friendly option for gamers and PC builders who want to save without sacrificing performance. However, the higher price of the Power Zone 2 reflects its premium features and efficiency, which may be worth the investment for users seeking top-tier performance.
Which should you buy?
Choosing between the be quiet! Power Zone 2 and the NZXT C850 Gold Core ultimately comes down to your specific needs and budget. If you're looking for top-notch efficiency, superior cooling capabilities, and don’t mind spending extra, the Power Zone 2 is an excellent choice. However, if you're on a tighter budget and desire a reliable, quiet, and fully modular power supply, the NZXT C850 Gold Core stands out as a more economical option without sacrificing essential features.

