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Cooler Master V750 SFX Gold 750W Fully Modular vs CORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready Fully

Updated July 2026 — Cooler Master V750 SFX Gold 750W Fully Modular wins on form factor and cable length, CORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready Fully wins on fan size and size.

The Cooler Master V750 is ideal for compact builds, while the Corsair RM1000x excels in power output and efficiency. Choose based on your specific needs.

Why Cooler Master V750 SFX Gold 750W Fully Modular is better

Compact Design

Ideal for mini-ITX builds.

Price

Cheaper than RM1000x.

Warranty

10-year warranty.

Why CORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready Fully is better

Power Output

1000W vs 750W.

Efficiency

Up to 91% efficiency.

Cooling

Larger 140mm fan.

Overall score

Cooler Master V750 SFX Gold 750W Fully Modular
85
CORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready Fully
90

Specifications

SpecCooler Master V750 SFX Gold 750W Fully ModularCORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready Fully
Power Output750W1000W
Efficiency Rating80+ GoldCybenetics Gold
ModularityFully ModularFully Modular
Cooling Fan92mm FDB140mm FDB
Warranty10 years10 years

Dimension comparison

Cooler Master V750 SFX Gold 750W Fully ModularCORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready Fully

Design and Form Factor

The Cooler Master V750 SFX Gold is designed for mini-ITX builds, making it an excellent choice for compact systems. In contrast, the Corsair RM1000x is an ATX power supply suited for larger cases and builds. The V750's small form factor allows it to fit into tighter spaces, while the RM1000x’s design caters to traditional mid-tower and full-tower setups.

The V750 features a mighty ITX design with a focus on space efficiency, delivering high-performance power in a compact package. On the other hand, the RM1000x does not prioritize size but instead offers a powerful 1000W output, which is beneficial for high-end gaming rigs and workstations requiring more energy.

Power Output and Efficiency

In terms of power output, the Corsair RM1000x clearly leads with its impressive 1000W capacity compared to the Cooler Master V750's 750W. This substantial difference means the RM1000x can support more demanding components and multi-GPU setups.

When it comes to efficiency, the V750 boasts an 80+ Gold rating, achieving about 90% efficiency, while the RM1000x is Cybenetics Gold certified, rated for up to 91% efficiency. This slight edge in efficiency may not seem significant, but it translates into lower power consumption and reduced heat generation over time.

Cable Management and Modularity

Both power supplies offer fully modular designs, which is a significant advantage for cable management. This feature allows users to connect only the cables needed for their systems, reducing clutter and improving airflow.

However, the Cooler Master V750 includes customized short cables with the latest ATX 3.1 connector, specifically designed to fit mini-ITX cases, minimizing excess cable length. The RM1000x also features ultra-flexible embossed cables, which enhance ease of installation, but they do not specifically cater to smaller builds as effectively as the V750's design.

Cooling Solutions

Cooling is crucial for maintaining system stability, and both power supplies employ advanced cooling technologies. The V750 utilizes a 92mm Fluid Dynamic Bearing (FDB) fan that ensures efficient cooling with a low-maintenance design.

Conversely, the RM1000x is equipped with a larger 140mm FDB fan, which typically offers better airflow and quieter operation. Both units prioritize low noise levels, making them suitable for silent PC builds, but the larger fan on the RM1000x may provide an advantage in cooling performance for high-output systems.

Warranty and Reliability

The Cooler Master V750 comes with a robust 10-year warranty, reflecting the brand’s confidence in its reliability and durability. This long warranty period is appealing for users who want peace of mind regarding their investment.

Similarly, the Corsair RM1000x also offers a 10-year warranty, underscoring its reliability as a high-performance power supply. Both products are backed by extensive warranties, providing assurance that they are built to last, regardless of usage intensity.

Pricing and Value

Price-wise, the Cooler Master V750 is listed at $161.80, making it about 17% cheaper than the Corsair RM1000x, which retails for $179.99. This price difference can be significant for budget-conscious consumers looking for a quality power supply without breaking the bank.

While the RM1000x offers more power and slightly higher efficiency, the V750 provides excellent value for those who do not need the additional wattage. For users focusing on compact builds, the V750 stands out as a cost-effective option.

Performance and Use Cases

The Cooler Master V750 is tailored for mini-ITX systems, making it ideal for users who prioritize a small footprint without sacrificing performance. It supports ATX 3.1 standards and is PCIe 5.1 ready, ensuring compatibility with modern components.

In contrast, the Corsair RM1000x is built for high-demand systems, capable of powering high-end graphics cards and multiple peripherals. Its greater wattage and robust efficiency make it a top choice for gamers and professionals who require dependable performance under load.

Which should you buy?

Choosing between the Cooler Master V750 and the Corsair RM1000x ultimately depends on your specific needs. If you're building a compact mini-ITX system and prefer a more affordable option, the V750 is an excellent choice with its efficient design and lower price point. However, for those requiring more power for high-performance builds or who may expand their systems in the future, the RM1000x provides superior wattage and efficiency, making it a worthwhile investment.