be quiet! Power Zone 2 1000W ATX 3.1 PSU | 80 Plus vs CORSAIR RM750x Shift Fully Modular ATX Power
Updated August 2026 — be quiet! Power Zone 2 1000W ATX 3.1 PSU | 80 Plus wins on build quality and future proof, CORSAIR RM750x Shift Fully Modular ATX Power wins on modularity.
The be quiet! Power Zone 2 excels in efficiency and silent operation, while the CORSAIR RM750x Shift offers affordability and modularity. Choose based on your priorities.
Why be quiet! Power Zone 2 1000W ATX 3.1 PSU | 80 Plus is better
Efficiency
Power Zone 2 has 80 Plus Platinum certification.
Cooling
Power Zone 2 features a dedicated Zero RPM mode.
Future-proofing
Power Zone 2 includes a native 12V-2x6 connector.
Why CORSAIR RM750x Shift Fully Modular ATX Power is better
Price
RM750x Shift is significantly cheaper.
Modularity
RM750x Shift has a fully modular design.
Aesthetics
RM750x Shift comes in a striking white color.
Overall score
Specifications
| Spec | be quiet! Power Zone 2 1000W ATX 3.1 PSU | 80 Plus | CORSAIR RM750x Shift Fully Modular ATX Power |
|---|---|---|
| Certification | 80 Plus Platinum | 80 Plus Gold |
| Fan Size | 140mm | 140mm |
| Connector Type | 12V-2x6 | Standard |
| Warranty | 5 years | 10 years |
| Cooling Mode | Zero RPM | Zero RPM |
Dimension comparison
Overview of the Products
In this comparison, we will explore the be quiet! Power Zone 2 1000W ATX 3.1 PSU and the CORSAIR RM750x Shift Fully Modular ATX Power Supply. The Power Zone 2 is priced at $159.90, while the RM750x Shift is significantly more affordable at $79.99, making it about 50% cheaper. Both power supplies are designed for high-performance systems, but they cater to different needs and preferences in terms of features and efficiency.
Efficiency Ratings
The efficiency rating is a critical aspect when choosing a power supply. The be quiet! Power Zone 2 boasts an 80 Plus Platinum certification, meaning it achieves up to 94.0% efficiency under optimal conditions. This high efficiency results in lower power consumption and a cooler operation. In comparison, the CORSAIR RM750x Shift is rated at 80 Plus Gold, which provides about 90% efficiency at typical loads. While Gold certification is still excellent, it falls short of the Platinum rating found in the Power Zone 2, making the latter a better option for users prioritizing energy efficiency.
Cooling Solutions
Both power supplies utilize advanced cooling technologies, but their approaches differ. The be quiet! Power Zone 2 features a semi-passive Zero RPM cooling mode, where the large Pure Wings 3 140mm fan remains off under low loads, ensuring near-silent operation. This design is perfect for users who desire quiet performance. On the other hand, the CORSAIR RM750x Shift employs a 140mm fluid dynamic bearing fan, which also supports Zero RPM mode for silent operation at low and medium loads. While both units promise quiet performance, the Power Zone 2 may have the edge due to its dedicated design for silence during low loads.
Modular Design
When it comes to modularity, the CORSAIR RM750x Shift takes a notable lead with its fully modular design. This feature allows users to connect only the cables they need, facilitating cleaner cable management. Additionally, the RM750x Shift has an innovative side cable interface that enhances accessibility, making it easier for users to manage their builds. Conversely, while the Power Zone 2 does support modular connections, its design does not emphasize the same level of accessibility and convenience as the RM750x Shift, making the latter potentially more attractive for those keen on neat builds.
Future-Proofing Features
Future-proofing is vital for any power supply, especially as new hardware emerges. The be quiet! Power Zone 2 is equipped with native integration for the 12V-2x6 connector, which is essential for next-generation PCIe 5.1 graphics cards. This forward-thinking design ensures that users can upgrade their systems without needing to replace their power supply. The RM750x Shift also complies with ATX 3.1 standards and supports PCIe Gen 5.1, but it does not specifically highlight the native connector for the latest graphics cards. Thus, the Power Zone 2 may be the better choice for tech enthusiasts looking to invest in future upgrades.
Internal Components
The internal components of a power supply significantly impact its performance and longevity. The be quiet! Power Zone 2 utilizes high-class technologies backed by an LLC topology that provides excellent voltage regulation. This design is tailored for ultra-quiet systems and demands placed by gaming and media creation PCs. In contrast, the CORSAIR RM750x Shift makes use of 100% 105°C-rated Japanese electrolytic capacitors, which ensure reliable power delivery and durability. While both power supplies are built with quality components, the Power Zone 2’s focus on quiet operation might appeal more to users sensitive to noise.
Aesthetics and Build Quality
Aesthetics can play a crucial role in a user’s choice, particularly for those who showcase their builds. The be quiet! Power Zone 2 comes in a sleek black design that fits seamlessly into most setups. Its understated elegance is complemented by its efficient cooling system. The CORSAIR RM750x Shift, on the other hand, is offered in a striking white color, featuring a modern design with a side interface for cable management. This visually appealing design may attract users looking for a standout component in their builds. Ultimately, the choice here comes down to personal taste—whether one prefers the classic look of black or the boldness of white.
Which should you buy?
Ultimately, choosing between the be quiet! Power Zone 2 1000W ATX 3.1 PSU and the CORSAIR RM750x Shift Fully Modular ATX Power Supply comes down to user needs and preferences. If you prioritize energy efficiency, silent operation under low loads, and future-proofing, the Power Zone 2 is an excellent choice despite its higher price of $159.90. However, if you are looking for a more affordable option at $79.99 with a great modular design and an attractive aesthetic, the RM750x Shift is a solid contender. Consider your budget and performance requirements before making a decision.

