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NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - vs Segotep 650W 80 Plus Gold Certified Non-Modular

Updated August 2026 — NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - wins on modularity and warranty, Segotep 650W 80 Plus Gold Certified Non-Modular wins on price.

The NZXT C850 Gold Core offers superior efficiency, modular design, and quieter operation compared to the Segotep 650W. For those seeking high performance, the NZXT is the clear choice.

Why NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - is better

Efficiency

NZXT has Cybenetics Platinum rating.

Modularity

NZXT is fully modular.

Warranty

NZXT offers a 7-year warranty.

Why Segotep 650W 80 Plus Gold Certified Non-Modular is better

Price

Segotep is $50 cheaper.

Simplicity

Segotep's non-modular design simplifies installation.

Global Use

Segotep supports global voltage adaptation.

Overall score

NZXT C850 Gold Core - 850W ATX 3.1 Power Supply -
88
Segotep 650W 80 Plus Gold Certified Non-Modular
65

Specifications

SpecNZXT C850 Gold Core - 850W ATX 3.1 Power Supply -Segotep 650W 80 Plus Gold Certified Non-Modular
Power Output850W650W
Efficiency Rating80 PLUS Gold, Cybenetics Platinum80 PLUS Gold
Fan Size135 mm120 mm
Modular DesignFully ModularNon-Modular
Warranty7 yearsNot specified

Dimension comparison

NZXT C850 Gold Core - 850W ATX 3.1 Power Supply -Segotep 650W 80 Plus Gold Certified Non-Modular

Overview of the Products

The NZXT C850 Gold Core is a premium power supply unit (PSU) priced at $99.99, while the Segotep 650W is a more budget-friendly option at $49.99. This price difference of $50 highlights the distinct target audiences for these two products. The NZXT model caters to those seeking high efficiency and advanced features, making it suitable for modern gaming setups, while the Segotep offers essential capabilities for users looking for a reliable yet economical power solution.

Efficiency Ratings

The NZXT C850 Gold Core holds an 80 PLUS Gold certification, along with Cybenetics Platinum efficiency, ensuring exceptional energy efficiency and stable performance. This dual rating signifies that it operates with minimal energy waste, even under heavy loads. In contrast, the Segotep 650W also boasts an 80 PLUS Gold certification. Although both power supplies share this efficiency designation, the NZXT's Cybenetics Platinum rating indicates a higher level of performance, particularly in demanding scenarios.

Design and Modularity

The NZXT C850 Gold Core is a fully modular power supply, allowing users to connect only the cables they need, resulting in a cleaner and more organized build. This modularity enhances airflow within the case and simplifies cable management, crucial for high-performance systems. On the other hand, the Segotep 650W features a non-modular design, which may contribute to cable clutter but simplifies the installation process. Users who prioritize aesthetics and airflow may prefer the NZXT, while those looking for ease of use may lean towards the Segotep.

Fan Operation and Noise Levels

The NZXT C850 Gold Core is designed for whisper-quiet operation, with a noise rating of A++ for minimal sound emissions, even under load. Its 135 mm fluid dynamic bearing fan operates silently with a Zero RPM mode during light workloads. In contrast, the Segotep 650W features a 120 mm silent fan but lacks specific noise ratings. Users prioritizing a quiet computing experience are likely to favor the NZXT for its superior noise management capabilities.

Compatibility with GPUs

The NZXT C850 Gold Core is explicitly designed to support next-gen GPUs with its dual-color 12V-2x6 connector, making it an ideal choice for gamers utilizing modern NVIDIA graphics cards. It can also accommodate multiple 8-pin PCIe cables, enhancing its versatility for various builds. Meanwhile, the Segotep 650W provides four PCIe 6+2 pin connectors, which can support 40 series graphics cards. While both options cater to gamers, the NZXT offers more advanced compatibility features for high-end GPU setups.

Build Quality and Components

The NZXT C850 Gold Core is built with premium 105°C-rated capacitors, ensuring stable and long-lasting performance across a wide range of system loads. This high-quality construction is indicative of its target market, which often demands reliability and efficiency. The Segotep 650W, while also designed to deliver reliable power, does not specify the quality of its internal components. For users who value durability and performance in demanding scenarios, the NZXT may be the preferable choice.

Warranty and Customer Support

The NZXT C850 Gold Core comes with a generous 7-year warranty, giving users peace of mind regarding the longevity and reliability of their purchase. This extended warranty reflects the manufacturer's confidence in their product’s quality. Conversely, the Segotep 650W does not explicitly mention warranty details, which could be a deciding factor for consumers considering long-term investments. A solid warranty can often enhance customer satisfaction and trust in the brand.

Which should you buy?

Choosing between the NZXT C850 Gold Core and the Segotep 650W ultimately depends on your specific needs and budget. If you prioritize top-tier efficiency, modular design, quiet operation, and robust build quality, the NZXT C850 Gold Core is worth the investment at $99.99. However, if you are looking for a cost-effective solution that still provides reliable performance for general use, the Segotep 650W, priced at $49.99, is an excellent choice. The decision should be guided by your performance requirements and budget constraints.