CORSAIR RM650e vs GameMax 750W Rampage Power Supply
Updated August 2026 — The Corsair RM650e offers superior features and efficiency, while the GameMax 750W Rampage is a budget-friendly option with decent performance.
The Corsair RM650e offers superior features and efficiency, while the GameMax 750W Rampage is a budget-friendly option with decent performance.
Why CORSAIR RM650e is better
Power Output
Corsair RM650e provides 650W, focusing on efficiency.
Modular Design
Fully modular design for better cable management.
Build Quality
105°C-rated capacitors for enhanced durability.
Why GameMax 750W Rampage Power Supply is better
Price
GameMax 750W Rampage is significantly cheaper.
Power Output
Offers higher power output at 750W.
Cooling Fan
Ultra-silent 14cm fan for quiet operation.
Overall score
Specifications
| Spec | CORSAIR RM650e | GameMax 750W Rampage Power Supply |
|---|---|---|
| Brand | Corsair | GAMEMAX |
| Certification | ATX 3.1 | 80 Plus Bronze |
| Fan Size | 120mm | 14cm |
| Capacitors | 105°C-rated | Japanese TK |
| Cooling Type | Rifle Bearing | Ultra Silent |
Dimension comparison
Price Comparison
When it comes to pricing, the GameMax 750W Rampage Power Supply is significantly more affordable at £45.80 compared to the Corsair RM650e, which is priced at £71.57. This difference of £25.77 makes the GameMax an appealing option for budget-conscious consumers. While the Corsair model justifies its higher price with advanced features and certifications, the lower cost of the GameMax model may attract users looking for basic functionality without breaking the bank.
Power Output
The GameMax 750W Rampage offers a higher power output of 750 watts, while the Corsair RM650e provides 650 watts. This additional 100 watts in the GameMax unit could be beneficial for users with higher power demands, particularly in gaming setups. The single 12V rail of the Rampage is designed for high compatibility and extreme current output, making it suitable for gaming rigs and more power-hungry components. Meanwhile, the Corsair model is also robust but focuses more on efficiency and modularity rather than sheer power output.
Modular Design
The modular design of a power supply can significantly affect system build and cable management. The Corsair RM650e features a fully modular design, allowing users to connect only the cables they need, which can lead to a cleaner and more organised case. In contrast, the GameMax 750W Rampage employs a semi-modular design, which, while still efficient, may not offer the same level of flexibility. Users who prioritise clean cable management may prefer the fully modular option of the RM650e, despite its higher price.
Efficiency Ratings
Efficiency is a critical factor in power supplies, affecting both performance and energy costs. The GameMax 750W Rampage is 80 Plus Bronze certified, achieving efficiency levels of up to 88% at a 50% load. This certification indicates that the Rampage is a reliable choice for energy savings. The Corsair RM650e, while not explicitly rated in the provided details, is noted for its compliance with the ATX 3.1 standard, suggesting a focus on efficiency and modern power management. The precise efficiency of the RM650e remains unclear, but its design promises dependable performance.
Noise Levels
Noise levels can be a deciding factor for many consumers, especially those building systems for gaming or quiet environments. The Corsair RM650e utilises a 120mm rifle bearing fan specifically designed to keep noise levels down, even under full load. This focus on quieter operation makes it an attractive option for sound-sensitive users. On the other hand, the GameMax 750W Rampage features a 14cm cooling fan that is described as ultra-silent, ensuring effective cooling while maintaining a quiet operation. Both power supplies prioritise noise reduction, but the Corsair model appears to have a slight edge based on its tailored fan curve.
Build Quality and Components
The build quality of a power supply can greatly influence its reliability and longevity. The Corsair RM650e boasts 105°C-rated capacitors, which are designed to deliver steady power and consistent electrical performance. This speaks to a higher level of durability and reliability in demanding conditions. The GameMax 750W Rampage also includes a Japanese TK main capacitor, known for its reliability and quality assurance, providing a solid foundation for dependable performance. While both brands use quality components, the specific ratings of the Corsair's capacitors suggest a potentially more robust construction.
Compatibility and Features
Compatibility with modern systems is essential for any power supply. The Corsair RM650e is Intel ATX 3.1 certified, supporting the latest PCIe 5.1 standards and capable of handling transient power excursions from GPUs. This makes it an excellent choice for users looking to future-proof their builds. The GameMax 750W Rampage is also designed with gaming in mind, offering real gaming power through its single 12V rail. However, it lacks the same level of certification as the Corsair, which could be a consideration for users wanting to ensure compatibility with the latest hardware.
Which should you buy?
Choosing between the Corsair RM650e and the GameMax 750W Rampage Power Supply ultimately depends on your specific needs and budget. If you are looking for a more powerful unit with a fully modular design and superior efficiency, the Corsair RM650e is worth the investment at £71.57. However, if you are on a tighter budget and need a reliable power supply with decent performance, the GameMax 750W Rampage at £45.80 presents a strong alternative. Consider your power requirements, noise sensitivity, and whether you value modularity when making your final decision.
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