Cooler Master V850 SFX Gold vs GameMax 750W Rampage Power Supply
Updated August 2026 — The Cooler Master V850 SFX Gold is the superior choice for high-performance builds, while the GameMax 750W Rampage is a budget-friendly option for basic systems.
The Cooler Master V850 SFX Gold is the superior choice for high-performance builds, while the GameMax 750W Rampage is a budget-friendly option for basic systems.
Why Cooler Master V850 SFX Gold is better
Efficiency
Cooler Master has 80 PLUS Gold certification vs GameMax's Bronze.
Build Quality
Cooler Master uses 100% Japanese capacitors and offers a 10-year warranty.
Cooling
Cooler Master features a semi-fanless mode for quieter operation.
Why GameMax 750W Rampage Power Supply is better
Price
GameMax is significantly cheaper at £45.80.
Simplicity
GameMax's semi-modular design simplifies installation.
Cooling Size
GameMax has a larger 14cm cooling fan.
Overall score
Specifications
| Spec | Cooler Master V850 SFX Gold | GameMax 750W Rampage Power Supply |
|---|---|---|
| Efficiency | 80 PLUS Gold | 80 PLUS Bronze |
| Modularity | Fully Modular | Semi-Modular |
| Warranty | 10 years | Not specified |
| Cooling Fan | 92mm FDB | 14cm |
| Max Power | 850W | 750W |
Dimension comparison
Overview of Power Supplies
When choosing between the Cooler Master V850 SFX Gold and the GameMax 750W Rampage Power Supply, the most significant differences lie in their efficiency ratings, design, and intended use. The Cooler Master V850 is priced at £134.56 while the GameMax Rampage is significantly cheaper at £45.80. However, the higher price of the Cooler Master unit reflects its advanced features and efficiency, making it more suitable for high-performance systems.
Efficiency Ratings
The Cooler Master V850 SFX Gold boasts an impressive 80 PLUS Gold certification, achieving up to 90% efficiency under typical loads. This higher efficiency not only reduces energy costs but also generates less heat, which is crucial for maintaining optimal performance in compact systems. In contrast, the GameMax 750W Rampage offers an 80 PLUS Bronze certification, with a maximum efficiency of up to 88% at 50% load. While the GameMax is still efficient, it does not match the Cooler Master’s superior performance in energy consumption and heat management.
Design and Form Factor
Design-wise, the Cooler Master V850 is specifically crafted for small form factor (SFF) mini-ITX PC cases, with compact dimensions of 100 x 125 x 63.5 mm, making it an excellent choice for space-constrained builds. It can also be used in standard ATX cases with an included SFX-to-ATX bracket. On the other hand, the GameMax Rampage, while semi-modular and designed for ease of installation, is less compact and is better suited for standard builds. This design consideration makes the Cooler Master a more versatile option for those looking to maximise space.
Cable Management
The Cooler Master V850 features fully modular cabling, allowing for complete cable management. This design not only facilitates a cleaner build but also enhances internal airflow by reducing unnecessary cables. In contrast, the GameMax Rampage employs a semi-modular design, which simplifies the building process but might leave some unused cables cluttering the case. This difference in cable management can be a pivotal factor for users who prioritise aesthetics and airflow in their builds.
Cooling Solutions
Cooling is critical in power supply performance. The Cooler Master V850 uses a 92mm fluid dynamic bearing (FDB) fan that operates quietly and includes a semi-fanless mode for loads under 15%. This feature ensures that the power supply remains silent during low-power tasks, which is a significant advantage for quiet PC builds. Conversely, the GameMax Rampage is equipped with a 14cm cooling fan that promises effective and silent cooling. However, it lacks the semi-fanless capability, meaning it may generate more noise during low loads compared to the Cooler Master.
Build Quality and Longevity
When it comes to build quality, the Cooler Master V850 stands out with 100% Japanese capacitors, which contribute to its long-term reliability and performance. This quality is supported by a 10-year warranty, providing users with peace of mind regarding its durability. The GameMax Rampage, while built with a Japanese TK main capacitor, does not specify its warranty duration, which could raise concerns about its long-term reliability compared to the Cooler Master unit. Users may find the Cooler Master's construction more reassuring for a long-term investment.
Target Audience
The Cooler Master V850 is tailored for high-performance builds and enthusiasts who demand efficiency and reliability in compact cases. Its premium features justify its higher price point, especially for users who require a reliable power source for demanding applications. In contrast, the GameMax Rampage is more appropriate for basic systems and gaming rigs, offering a cost-effective solution for first-time builders or those upgrading existing systems without needing the advanced features of the Cooler Master.
Which should you buy?
Choosing between the Cooler Master V850 SFX Gold and the GameMax 750W Rampage Power Supply largely depends on your specific needs. If you are building a compact, high-performance system and are willing to invest in a more efficient and superior product, the Cooler Master at £134.56 is the clear winner. Conversely, if you are on a budget and seeking a reliable power supply for a basic setup, the GameMax Rampage at £45.80 presents a solid option, albeit with fewer advanced features.
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