CORSAIR RM850x Fully Modular Low-Noise ATX Power Supply vs Cooler Master MWE 750 Gold V2 Fully Modular PSU
Updated August 2026 — The CORSAIR RM850x offers better value with a lower price and higher efficiency, making it the preferred choice for budget-conscious users. However, the Cooler Master MWE 750 Gold V2 excels in temperature resilience and fan technology.
The CORSAIR RM850x offers better value with a lower price and higher efficiency, making it the preferred choice for budget-conscious users. However, the Cooler Master MWE 750 Gold V2 excels in temperature resilience and fan technology.
Why CORSAIR RM850x Fully Modular Low-Noise ATX Power Supply is better
price
CORSAIR RM850x is £17.01 cheaper
efficiency
CORSAIR RM850x has 91% efficiency
noise
CORSAIR RM850x operates at lower noise levels
Why Cooler Master MWE 750 Gold V2 Fully Modular PSU is better
temperature
Cooler Master MWE 750 Gold V2 has a 50°C threshold
fan technology
Cooler Master MWE 750 Gold V2 features dynamic fan control
cabling
Cooler Master MWE 750 Gold V2 uses flat black cabling for aesthetics
Overall score
Specifications
| Spec | CORSAIR RM850x Fully Modular Low-Noise ATX Power Supply | Cooler Master MWE 750 Gold V2 Fully Modular PSU |
|---|---|---|
| Brand | Corsair | Cooler Master |
| Modular | Fully | Fully |
| Efficiency Cert | Cybenetics Gold | 80 PLUS Gold |
| Noise Level | Low | Moderate |
| Temp Resilience | Standard | High |
Dimension comparison
Price Comparison
When it comes to price, the CORSAIR RM850x is more affordable at £124.40 compared to the Cooler Master MWE 750 Gold V2, which is priced at £141.41. This difference of £17.01 may be significant, especially for those on a budget. Both products are fully modular, allowing users to connect only the cables they need, but the RM850x offers a more cost-effective solution without compromising on performance. Therefore, if price is a primary concern, the CORSAIR RM850x stands out as the better option.
Efficiency Ratings
Efficiency is critical for power supplies, and the CORSAIR RM850x boasts a Cybenetics Gold certification with an impressive efficiency rating of up to 91%. In contrast, the Cooler Master MWE 750 Gold V2 also holds an 80 PLUS Gold certification, with a typical efficiency of 90%. While both power supplies are excellent in terms of energy efficiency, the slightly higher efficiency of the RM850x may lead to reduced power consumption over time, further justifying its lower price.
Modular Design
Both power supplies feature a fully modular design, which allows for cleaner cable management and improved airflow within the PC case. The CORSAIR RM850x's embossed cables with low-profile combs provide a sleek appearance and flexibility during installation. The Cooler Master MWE 750 Gold V2, on the other hand, uses flat black cabling that also enhances aesthetics while optimising space. While both designs serve practical purposes, the choice may come down to personal preference in visual appeal and installation ease.
Temperature Resilience
The Cooler Master MWE 750 Gold V2 has a higher temperature threshold of 50°C, compared to the standard limits of many power supplies. This increased resilience makes it particularly appealing for users who plan on overclocking or engaging in high-performance tasks like 3D rendering. The CORSAIR RM850x, while not explicitly stated, is designed to operate efficiently at lower temperatures due to its 91% efficiency rating. Users prioritising performance in high-temperature environments may lean towards the MWE 750 Gold V2.
Fan Technology
The fan technology in these power supplies plays a vital role in maintaining system performance and noise levels. The CORSAIR RM850x features a low-noise operation thanks to its efficient design, which is particularly appealing for gamers and PC enthusiasts seeking a quieter experience. In contrast, the Cooler Master MWE 750 Gold V2 is equipped with a responsive hydro-dynamic bearing (HDB) fan that adjusts its speed based on temperature, providing efficient cooling while reducing noise during low-demand periods. Users who value quiet operation may prefer the RM850x, whereas those who want dynamic fan control might opt for the MWE 750 Gold V2.
Compatibility
Compatibility is essential for power supplies, especially with the latest graphics cards. The CORSAIR RM850x is ATX 3.1 compliant, which supports PCIe 5.1 and can handle transient power spikes, making it suitable for high-end builds. It also features a native 12V-2x6 connector for direct GPU connections without the need for adapters. The Cooler Master MWE 750 Gold V2 offers broad compatibility with multiple connectors, including 2 EPS connectors and various other ports for peripherals. The RM850x's more advanced compliance may appeal to those building cutting-edge gaming systems.
Brand Reputation
Both Corsair and Cooler Master are well-recognised brands in the gaming and PC component market. Corsair is often praised for its reliability and performance, especially in power supplies, while Cooler Master has a strong reputation for its cooling solutions and power products. Customer preferences may vary based on past experiences and brand loyalty, but both brands offer products that are highly regarded by the community. The choice may ultimately depend on which brand a user feels more comfortable with based on previous purchases.
Which should you buy?
In conclusion, choosing between the CORSAIR RM850x and the Cooler Master MWE 750 Gold V2 ultimately depends on user priorities. The RM850x offers a lower price, higher efficiency, and a design that may appeal more to those concerned about noise. Conversely, if temperature resilience and dynamic fan control are paramount, the MWE 750 Gold V2 could be the preferred choice. Both power supplies are excellent options, but users must assess their individual needs to make the best decision.
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