CORSAIR RM850e vs GameMax 750W Rampage Power Supply
Updated August 2026 — The CORSAIR RM850e is the superior choice for high-performance systems, while the GameMax Rampage offers great value for budget builds.
The CORSAIR RM850e is the superior choice for high-performance systems, while the GameMax Rampage offers great value for budget builds.
Why CORSAIR RM850e is better
modularity
Fully modular design for better cable management
efficiency
Intel ATX 3.1 certification for higher efficiency
cooling
Quieter operation with a 120mm rifle bearing fan
Why GameMax 750W Rampage Power Supply is better
price
More affordable at £45.80
fan size
Larger 14cm fan for effective cooling
basic compatibility
Single 12V rail for standard gaming setups
Overall score
Specifications
| Spec | CORSAIR RM850e | GameMax 750W Rampage Power Supply |
|---|---|---|
| Brand | Corsair | GAMEMAX |
| Wattage | 850W | 750W |
| Certification | ATX 3.1 | 80 Plus Bronze |
| Fan Size | 120mm | 14cm |
| Capacitors | 105°C-rated | Japanese TK |
Dimension comparison
Overview of the Power Supply Market
In the competitive landscape of power supplies, the CORSAIR RM850e and the GameMax 750W Rampage Power Supply stand out for distinct reasons. The RM850e is priced at £85.99, whereas the Rampage is significantly more affordable at £45.80. This disparity in price reflects differences in features, capabilities, and target user segments. Understanding these differences is crucial for potential buyers who seek value for their investment.
Build Quality and Design
The CORSAIR RM850e boasts a fully modular design, allowing users to connect only the cables they need, which enhances ease of installation and overall cable management. This feature is particularly beneficial for gamers and PC builders looking for a clean and efficient setup. In contrast, the GameMax 750W Rampage employs a semi-modular approach, which, while still offering some flexibility in cable management, does not match the RM850e’s full modularity. This makes the RM850e a more streamlined choice for complex builds.
Efficiency Ratings
Efficiency is a critical factor for any power supply, and here the CORSAIR RM850e excels with its Intel ATX 3.1 certification. This certification not only ensures compliance with modern standards but also supports PCIe 5.1, making it future-proof for high-performance GPUs. The GameMax Rampage, on the other hand, holds an 80 Plus Bronze certification, achieving up to 88% efficiency at 50% load. Although the Rampage is efficient, it does not quite reach the higher standards set by the RM850e, an important consideration for energy-conscious users.
Cooling Mechanisms
Cooling efficiency is vital for maintaining optimal performance in power supplies. The RM850e is equipped with a 120mm rifle bearing fan that operates quietly, even under full load, which is a significant advantage for users who prioritise a low-noise environment. The GameMax Rampage features a larger 14cm cooling fan, designed to provide effective and silent cooling. While both units offer effective cooling solutions, the RM850e’s focus on quiet operation may appeal more to gamers who require a serene gaming experience.
Capacitor Quality
The longevity and stability of a power supply heavily rely on its internal components, particularly capacitors. The RM850e features 105°C-rated capacitors that promise dependable electrical performance and reliability. This is indicative of a design aimed at ensuring long-term use without compromising on power delivery. Conversely, the GameMax Rampage utilises a Japanese TK main capacitor, which also enhances reliability and quality assurance. While both power supplies utilise quality components, the higher temperature rating of the RM850e’s capacitors suggests a slight edge in durability.
Compatibility and Power Delivery
The CORSAIR RM850e is designed for high-performance systems, supporting a robust power output that is vital for modern gaming rigs and high-end components. Its ability to withstand 2x transient power excursions from GPUs is particularly noteworthy, as it ensures stability during intense gaming sessions. The GameMax Rampage, with its single 12V rail, provides ample compatibility and high current output for standard gaming setups. While the Rampage is suitable for basic systems and gaming rigs, it may not meet the demands of more power-hungry configurations as effectively as the RM850e.
Price Considerations
When it comes to price, the GameMax Rampage is significantly more accessible at £45.80, appealing to budget-conscious consumers or those building entry-level systems. In contrast, the CORSAIR RM850e, priced at £85.99, reflects its advanced features and higher efficiency ratings. This price difference is justified by the additional capabilities and performance that the RM850e offers, making it potentially worth the investment for serious gamers and professionals.
Which should you buy?
The decision between the CORSAIR RM850e and the GameMax 750W Rampage Power Supply ultimately hinges on your specific needs and budget. If you are seeking a power supply that offers top-tier efficiency, full modularity, and superior cooling with high-quality components, the RM850e is the clear choice. However, if your requirements are more modest, and you are looking for a reliable yet affordable option for a basic build, the GameMax Rampage provides excellent value. Thus, evaluate your current and future power needs carefully before making your selection.
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