Cooler Master V850 SFX Gold 850W Fully Modular vs CORSAIR RM750x Shift Fully Modular ATX Power
Updated August 2026 — Cooler Master V850 SFX Gold 850W Fully Modular wins on size and efficiency, CORSAIR RM750x Shift Fully Modular ATX Power wins on cable access.
The Cooler Master V850 SFX Gold offers superior efficiency and compact design, while the Corsair RM750x Shift excels in affordability and cable management. Choose based on your specific needs.
Why Cooler Master V850 SFX Gold 850W Fully Modular is better
Efficiency
Cooler Master has a higher efficiency rating at 90%.
Compact Design
V850 SFX Gold is designed for mini-ITX builds.
Cooling
Cooler Master features a specialized 92mm FDB fan.
Why CORSAIR RM750x Shift Fully Modular ATX Power is better
Price
Corsair RM750x Shift is significantly cheaper.
Cable Management
Innovative side cable interface for easier access.
Fan Size
Larger 140mm fan in Corsair may provide better airflow.
Overall score
Specifications
| Spec | Cooler Master V850 SFX Gold 850W Fully Modular | CORSAIR RM750x Shift Fully Modular ATX Power |
|---|---|---|
| Power Output | 850W | 750W |
| Efficiency Rating | 80 Plus Gold | 80 Plus Gold |
| Modularity | Fully Modular | Fully Modular |
| Fan Size | 92mm | 140mm |
| Warranty | 10 Years | 10 Years |
Dimension comparison
Price Comparison
When it comes to pricing, the CORSAIR RM750x Shift is significantly more affordable than the Cooler Master V850 SFX Gold. The RM750x Shift is priced at $79.99, making it about 48% cheaper than the V850 SFX Gold, which is priced at $153.25. This substantial price difference could be a deciding factor for budget-conscious buyers looking for a reliable power supply without breaking the bank. While the Cooler Master offers high-end features, the cost-effectiveness of the CORSAIR model may appeal to those who prioritize budget.
Design and Form Factor
The Cooler Master V850 SFX Gold features a compact SFX design specifically tailored for mini-ITX builds, while the CORSAIR RM750x Shift presents a standard ATX form factor. The V850 SFX Gold’s small footprint allows it to fit into tight spaces, making it ideal for compact gaming rigs and professional setups that require maximum performance without taking up much room. On the other hand, the RM750x Shift’s innovative side cable interface offers easier access and cleaner cable management, which can simplify the building process and improve aesthetics. Both designs cater to different needs, depending on the user's case preference.
Efficiency Ratings
Both power supplies boast an 80 Plus Gold certification, ensuring high efficiency in power delivery. The Cooler Master V850 SFX Gold operates with up to 90% efficiency, which ensures effective power transfer from the wall to components. Similarly, the CORSAIR RM750x Shift is designed to meet the ATX 3.1 power standard, supporting PCIe Gen 5.1 and resisting transient power spikes. This efficiency is crucial for maintaining lower energy costs and reducing heat output in high-performance systems. In terms of efficiency, both products stand out, but the Cooler Master may offer a slight edge due to its higher efficiency rating.
Cooling Solutions
Cooling performance is critical in maintaining the longevity and reliability of a power supply. The Cooler Master V850 SFX Gold features a 92mm Fluid Dynamic Bearing (FDB) fan designed for low noise and efficient cooling. In contrast, the CORSAIR RM750x Shift utilizes a 140mm Fluid Dynamic Bearing fan, which is optimized for high performance and low noise thanks to its specially calculated fan curve. Additionally, the RM750x Shift includes a Zero RPM mode that allows for virtually silent operation at low to medium loads. Both fans are engineered to provide reliable cooling, but the larger fan in the CORSAIR model may offer better airflow and quieter operation under varying loads.
Cable Management
Cable management is a vital aspect of building a clean and organized PC. The Cooler Master V850 SFX Gold comes with fully modular cables that reduce clutter and enhance airflow within the case. This feature allows users to only connect the cables they need, leading to a more streamlined build. On the other hand, the CORSAIR RM750x Shift features an innovative side cable interface, which makes access to connections easier and simplifies the cable management process. This design is particularly beneficial for users who frequently upgrade or modify their systems. Both power supplies excel in this area, but the CORSAIR’s side access might provide a more user-friendly experience.
Component Quality
Quality of components can significantly impact the reliability and longevity of a power supply. The Cooler Master V850 SFX Gold uses 100% Japanese capacitors, which contribute to improved efficiency and reduced ripple noise. On the flip side, the CORSAIR RM750x Shift also utilizes 100% 105°C-rated Japanese electrolytic capacitors, ensuring long-lasting performance and durability. Both brands emphasize high-quality internal components, which is essential for maintaining stable power delivery under load. While both models are built with premium parts, the emphasis on high-temperature rated capacitors in the CORSAIR model may provide an additional layer of reliability.
Warranty and Support
Warranty terms can be an important consideration when choosing a power supply. The Cooler Master V850 SFX Gold comes with an impressive 10-year warranty, reflecting the brand's confidence in the product's durability and performance. Comparatively, the CORSAIR RM750x Shift also offers a 10-year warranty, which is a standard in the industry for high-quality power supplies. Both warranties provide substantial reassurance for buyers, indicating that both manufacturers stand behind their products. However, the longevity of support may vary based on brand reputation and customer service experiences.
Which should you buy?
Choosing between the Cooler Master V850 SFX Gold and the CORSAIR RM750x Shift ultimately depends on your specific needs and budget. If you're looking for a compact, high-efficiency power supply with robust features for a mini-ITX build, the Cooler Master V850 SFX Gold is an excellent choice despite its higher price tag. However, if affordability, ease of cable management, and a reliable cooling solution are your top priorities, the CORSAIR RM750x Shift stands out as a fantastic option at a significantly lower price point. Both models offer excellent performance and quality, so your decision should align with your build requirements and budget constraints.

