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CORSAIR CX650 80 PLUS Bronze Non Modular Low-Noise ATX 650 Watt Power Supply - U vs GameMax 800W Rampage Power Supply

Updated August 2026The GameMax 800W Rampage offers higher power output and enhanced aesthetics, making it the better choice for gaming setups, while the CORSAIR CX650 excels in low noise operation.

The GameMax 800W Rampage offers higher power output and enhanced aesthetics, making it the better choice for gaming setups, while the CORSAIR CX650 excels in low noise operation.

Why CORSAIR CX650 80 PLUS Bronze Non Modular Low-Noise ATX 650 Watt Power Supply - U is better

Noise Levels

CORSAIR CX650 has a low-noise cooling fan.

Compact Size

CORSAIR CX650 is more compact at 125mm.

Price

CORSAIR CX650 is slightly cheaper at £44.99.

Why GameMax 800W Rampage Power Supply is better

Power Output

GameMax 800W Rampage provides 800W compared to 650W.

Cooling Fan Size

GameMax 800W Rampage has a larger 14cm cooling fan.

Build Quality

GameMax 800W Rampage uses a Japanese TK main capacitor.

Overall score

CORSAIR CX650 80 PLUS Bronze Non Modular Low-Noise ATX 650 Watt Power Supply - U
78
GameMax 800W Rampage Power Supply
85

Specifications

SpecCORSAIR CX650 80 PLUS Bronze Non Modular Low-Noise ATX 650 Watt Power Supply - UGameMax 800W Rampage Power Supply
Certification80 PLUS Bronze80 PLUS Bronze
Cooling Fan120mm14cm
Continuous Power650W800W
Noise LevelLowUltra Silent
CablingBlack SleevedFlat Black

Dimension comparison

CORSAIR CX650 80 PLUS Bronze Non Modular Low-Noise ATX 650 Watt Power Supply - UGameMax 800W Rampage Power Supply

Overview of the Power Supplies

When choosing between the CORSAIR CX650 and the GameMax 800W Rampage Power Supply, potential buyers should consider their specific needs and usage scenarios. The CORSAIR CX650, priced at £44.99, is designed for those who require reliable power with low noise, while the GameMax 800W Rampage offers a bit more power at £45.94, catering to users looking for a robust gaming experience. Both power supplies are 80 PLUS Bronze certified, ensuring operational efficiency of up to 88%, making them suitable for both gaming and basic systems.

Performance Efficiency

Performance efficiency is crucial for any power supply, and both the CORSAIR CX650 and GameMax 800W Rampage excel in this area. Each model boasts an 80 PLUS Bronze certification, achieving an efficiency of up to 88% at a load of 50%. This means that both power supplies minimise energy waste and heat generation, ultimately leading to lower electricity bills and a more environmentally friendly setup. While both options provide similar efficiency ratings, the CORSAIR CX650 guarantees its full rated wattage of continuous power, ensuring stable performance under load.

Cooling Solutions

Cooling solutions are essential to maintaining optimal performance in high-demand scenarios. The CORSAIR CX650 features a 120mm thermally controlled low-noise cooling fan that adjusts its speed based on load, reducing noise during lighter tasks. In contrast, the GameMax 800W Rampage utilises a larger 14cm ultra-silent cooling fan, which not only provides effective cooling but also enhances the overall aesthetics of the build with flat black cables. While both fans are designed for quiet operation, the GameMax's larger fan may offer slightly improved airflow, particularly in high-performance settings.

Build Quality and Components

The build quality of a power supply can significantly impact its longevity and reliability. The CORSAIR CX650 employs quality components to ensure durability, while the GameMax 800W Rampage includes a Japanese TK main capacitor, which is renowned for its reliability and extended life expectancy. This emphasis on high-quality components in the GameMax Rampage suggests that it may have a slight edge in terms of long-term reliability, especially under heavy loads. However, the CORSAIR CX650 is still a strong contender for users seeking a dependable power supply.

Aesthetics and Cable Management

Aesthetics and cable management are important factors for many PC builders. The CORSAIR CX650 features black sleeved cables and a sleek black powder-coated casing, ensuring a cohesive look that fits well in most builds. On the other hand, the GameMax 800W Rampage also prioritises aesthetics with its flat black cables, which not only look clean but also help improve airflow and organisation within the case. While both power supplies offer appealing designs, the GameMax may provide a more visually streamlined experience, particularly for those who value clean cable management.

Compatibility and Power Output

Compatibility is a key consideration when selecting a power supply, especially for gaming rigs. The GameMax 800W Rampage offers a higher total power output, rated at 800W, compared to the 650W offered by the CORSAIR CX650. This additional power allows for greater flexibility when selecting high-performance components, making the Rampage an excellent choice for gaming setups that require more wattage. Conversely, the CORSAIR CX650 is still capable of supporting a wide range of builds, especially those that do not demand extreme power levels.

Noise Levels

Noise levels can greatly affect the overall user experience, particularly in quiet environments. The CORSAIR CX650 is designed with a low-noise cooling fan that operates quietly during regular use, ramping up only under heavy load. The GameMax 800W Rampage also focuses on silent operation with its ultra-silent 14cm fan. Both power supplies are engineered to minimise noise, but the CORSAIR may have a slight advantage in extremely low-load scenarios due to its fan's speed modulation.

Which should you buy?

Choosing between the CORSAIR CX650 and GameMax 800W Rampage ultimately depends on your specific needs. If you require a reliable, efficient, and quieter power supply for a standard build, the CORSAIR CX650 at £44.99 is an excellent choice. However, for gaming enthusiasts looking for higher power output and enhanced aesthetics, the GameMax 800W Rampage at £45.94 stands out as the better option. Consider your usage scenario and preferences to determine which model aligns best with your requirements.

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CORSAIR CX650 80 PLUS Bronze Non Modular Low-Noise ATX 650 Watt Power Supply - U vs GameMax 800W Rampage Power Supply | versusfinder