CORSAIR RM750e ATX 3.1 PCIe 5.1 Ready Fully Modular 750W Power Supply – 12V-2x6 Cable Included, Cybenetics Gold Efficiency, 105°C-Rated Capacitors, Modern Standby Mode – Black vs Segotep 650W 80 Plus Gold Certified Non-Modular ATX Power Supply with 6+2 Pin Connectors PFC Protection and RoHS Compliance, 120mm Silent Fan Gaming PSU GN-650 Black

Price and Value Comparison

The Segotep 650W is about 44% cheaper than the Corsair RM750e, priced at $49.99 versus $89.99. This significant price difference makes the Segotep a compelling option for budget-conscious builders seeking efficiency certification without premium pricing. While the Corsair model commands a higher cost, it offers advanced features like ATX 3.1 compliance and PCIe 5.1 readiness that justify its premium. The Segotep’s lower price point reflects its entry-level positioning, targeting users who prioritize basic reliability and energy savings over cutting-edge compatibility.

Efficiency and Certification

Both power supplies are rated 80 Plus Gold, meaning they deliver high efficiency under typical loads. However, the Corsair RM750e goes beyond standard certification by being ATX 3.1 certified, which ensures compatibility with modern systems requiring enhanced power delivery standards. The Segotep lacks this certification, relying solely on its 80 Plus Gold rating for efficiency claims. While both meet the same efficiency benchmark, the Corsair’s additional compliance supports future-proofing for next-gen GPUs and platforms, making it more suitable for high-performance builds.

Cable Management and Modularity

The Corsair RM750e is fully modular, allowing users to connect only the cables needed for their system—reducing clutter and improving airflow. It includes a 12V-2x6 cable and multiple PCIe connectors, supporting modern GPU configurations. In contrast, the Segotep 650W is non-modular, meaning all cables are permanently attached. This design can lead to excess cable bulk inside the case but simplifies installation for users prioritizing ease over aesthetics. The Segotep does feature four 6+2 pin PCIe connectors, which support high-end graphics cards, though the fixed cable layout limits flexibility.

Build Quality and Component Ratings

The Corsair RM750e uses 105°C-rated capacitors, which enhance long-term reliability and performance under stress. These industrial-grade components contribute to stable voltage delivery and improved lifespan. The Segotep does not mention capacitor ratings in its specifications, leaving its build quality less transparent. Additionally, the Corsair comes with a seven-year warranty, signaling confidence in durability. The Segotep’s warranty duration is not listed, suggesting a potentially shorter or standard coverage period common among budget PSUs.

Fan Design and Noise Performance

The Corsair RM750e features a 120mm rifle bearing fan with a specially calculated fan curve designed to minimize noise even at full load. This ensures quiet operation during intensive tasks. The Segotep also includes a 120mm silent fan, but no details are provided about its bearing type or fan curve optimization. While both use similar-sized fans, the Corsair’s emphasis on low-noise engineering suggests better thermal management and quieter performance under sustained workloads.

Compatibility and Future-Proofing

The Corsair RM750e is PCIe 5.1 ready and ATX 3.1 certified, enabling it to handle transient power spikes from high-end GPUs and support upcoming hardware standards. It includes a native 12V-2x6 connector and dual 8-pin PCIe cables, ensuring compatibility with current and future graphics cards. The Segotep 650W lacks these certifications and does not mention PCIe 5.1 support. Its four 6+2 pin connectors are sufficient for most mid-tier GPUs but may fall short for next-generation hardware requiring higher power delivery stability.

Power Output and System Requirements

The Corsair RM750e delivers 750W of power, offering ample headroom for high-end gaming and workstation systems. It includes two 8-pin ATX 12V/EPS12V cables and a dedicated 12V-2x6 cable, supporting demanding CPU and GPU combinations. The Segotep 650W provides 650W, which is adequate for mid-range builds but may strain systems with powerful GPUs or multiple storage drives. Its single 12V rail design promises stable power delivery, but the lower wattage limits scalability compared to the Corsair’s higher capacity.

Which should you buy?

Choose the Corsair RM750e if you need future-ready power with ATX 3.1 and PCIe 5.1 support, superior cable management via full modularity, and long-term reliability backed by 105°C capacitors and a seven-year warranty—especially if your system includes high-end components. It costs $40 more than the Segotep 650W but offers significantly greater value in terms of technology, longevity, and performance. Opt for the Segotep 650W only if you’re building a budget-friendly system with moderate power demands, where the $40 savings outweigh the lack of modularity, certifications, and advanced features. For most users aiming for performance and longevity, the Corsair RM750e is the clear winner despite its higher price.