NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - 80 PLUS Gold - Cybenetics Plat vs GameMax 750W Rampage Power Supply
Updated August 2026 — The NZXT C850 Gold Core is the superior choice for high-performance needs, while the GameMax Rampage offers a budget-friendly alternative.
The NZXT C850 Gold Core is the superior choice for high-performance needs, while the GameMax Rampage offers a budget-friendly alternative.
Why NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - 80 PLUS Gold - Cybenetics Plat is better
higher wattage
NZXT C850 offers 850W compared to GameMax's 750W
better efficiency
NZXT C850 has 80 PLUS Gold certification vs GameMax's Bronze
fully modular
NZXT C850 allows complete cable detachment for better management
Why GameMax 750W Rampage Power Supply is better
lower price
GameMax Rampage is priced at £45.80
reliable components
GameMax uses Japanese TK main capacitor
decent performance
GameMax provides solid power for basic systems
Overall score
Specifications
| Spec | NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - 80 PLUS Gold - Cybenetics Plat | GameMax 750W Rampage Power Supply |
|---|---|---|
| Brand | NZXT | GAMEMAX |
| Certification | 80 PLUS Gold | 80 PLUS Bronze |
| Cooling Fan | FDB 135mm | 14cm |
| Cable Management | Fully Modular | Semi-Modular |
| Compatibility | ATX 3.1 | Standard |
Dimension comparison
Overview of the NZXT C850 Gold Core and GameMax 750W Rampage
The NZXT C850 Gold Core and GameMax 750W Rampage are two distinct power supplies catering to different segments of the market. The NZXT C850 Gold Core, priced at £89.99, boasts a higher wattage output of 850W, while the GameMax Rampage is available for £45.80 and offers 750W. This difference in wattage is significant for users requiring more power for high-performance components, especially in demanding gaming setups.
While the NZXT C850 targets gamers and builders looking for top-tier efficiency with its 80 PLUS Gold rating, the GameMax Rampage offers a more budget-friendly option with its 80 PLUS Bronze certification. Understanding these differences can help potential buyers make an informed decision based on their specific power needs and budget constraints.
Power Output and Efficiency
In terms of power output, the NZXT C850 Gold Core leads with 850W compared to the GameMax Rampage's 750W. This additional 100W can be crucial for high-end gaming rigs that incorporate multiple graphics cards or require significant power for other components.
The NZXT C850 also shines in efficiency, boasting an 80 PLUS Gold certification, which guarantees energy efficiency of up to 90% at 50% load. The GameMax Rampage, certified as 80 PLUS Bronze, achieves a maximum efficiency of 88% at the same load. This difference in efficiency not only impacts energy consumption but also influences heat generation, leading to potentially quieter operation and longer component life in the NZXT model.
Build Quality and Components
The construction quality of a power supply is paramount for ensuring longevity and reliability. The NZXT C850 features Cybenetics Platinum efficiency, which indicates a superior level of performance and reliability compared to the GameMax Rampage. The use of high-quality components in the NZXT, including a fluid dynamic bearing fan, suggests enhanced durability and quieter operation.
In contrast, the GameMax Rampage utilises a Japanese TK main capacitor, which contributes to its reliability. However, while it is built to provide solid performance, it does not match the premium materials and build quality found in the NZXT C850. This distinction could be an important factor for users prioritising long-term reliability and performance consistency.
Cooling Solutions
Cooling is a critical aspect of any power supply, especially for high-performance systems. The NZXT C850 Gold Core employs a 135 mm fluid dynamic bearing fan that operates quietly, with a noise rating of less than 15 dBA during normal operation. This feature is particularly appealing for gamers and builders who strive for a noise-free environment.
On the other hand, the GameMax Rampage features a 14 cm cooling fan designed for silent operation as well, but its specifications do not detail noise levels as explicitly as the NZXT. While both power supplies aim for quiet performance, the NZXT's certified noise levels may provide an edge in environments where silence is paramount.
Modularity and Cable Management
The NZXT C850 Gold Core is fully modular, allowing users to connect only the cables they need for their specific setup. This modularity enhances cable management, promoting a cleaner and more organised build. This is particularly beneficial for airflow and aesthetics within the PC case.
Conversely, the GameMax Rampage is semi-modular, meaning that while some cables are detachable, others are fixed. This design can lead to more clutter in certain setups, particularly if the non-detachable cables are not required. For users who value clean builds and efficient airflow, the fully modular design of the NZXT is a significant advantage.
Compatibility with Modern GPUs
The NZXT C850 Gold Core is designed with future-proofing in mind, being ATX 3.1 certified and PCIe 5.1 ready. This means it can seamlessly support the latest generation of graphics cards, which often require more power and specific connectors. The inclusion of a dual-colour 12V-2x6 connector ensures compatibility with modern NVIDIA graphics cards.
In contrast, the GameMax Rampage, while still compatible with high-end components, lacks the same level of certification and modern connector options. It is suitable for many gaming setups but might not be as future-proof as the NZXT, particularly for users planning to upgrade to the latest GPUs.
Noise Levels and Operation
When it comes to noise levels, the NZXT C850 is certified to operate at near-silent levels, with a rating of less than 15 dBA under light loads. This makes it a compelling choice for builders who prioritise a quiet PC experience.
The GameMax Rampage also aims for silent operation with its cooling fan, but without specific noise ratings, it is difficult to gauge how it stacks up against the NZXT. For noise-sensitive environments or builds, the detailed specifications of the NZXT C850 provide a clearer assurance of quiet performance.
Which should you buy?
Choosing between the NZXT C850 Gold Core and the GameMax 750W Rampage ultimately depends on your specific needs and budget. The NZXT C850 stands out with its higher wattage, superior efficiency, and fully modular design, making it an excellent choice for high-performance gaming rigs and future-proofing. However, at £45.80, the GameMax Rampage offers an attractive price point for those on a tight budget or for users building less demanding systems.
If you require enhanced power delivery, quieter operation, and top-tier efficiency, the NZXT C850 Gold Core is the clear winner. However, if you're looking for a reliable power supply that balances performance and cost, the GameMax Rampage remains a solid option.
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