CORSAIR RM1200x SHIFT Fully Modular ATX Power Supply - 80 PLUS Gold - ATX 3.1 - vs CORSAIR RM750e

Introduction to Corsair Power Supplies

When it comes to power supplies, Corsair offers a range of options that cater to different needs and budgets. In this comparison, we will look at the CORSAIR RM1200x SHIFT and the CORSAIR RM750e. The RM1200x SHIFT is priced at £174.98, while the RM750e is more budget-friendly at £81.99. Both units are compliant with the ATX 3.1 power standard, but they target different segments of the market.

Design and Connectivity

The RM1200x SHIFT stands out with its innovative side-mounted modular connections. This design not only provides easier access for cable management but also enhances the overall aesthetics of your build, allowing for a cleaner look. In contrast, the RM750e offers a traditional fully modular design, meaning users can connect only the cables they need. While both products feature fully modular cabling, the RM1200x SHIFT's unique connection position may appeal to those prioritising ease of installation and cable tidiness.

Performance and Efficiency

In terms of performance, the RM1200x SHIFT is equipped with a 140mm fluid dynamic bearing fan, designed for high performance and low noise. This contributes to superior reliability, which is critical for high-end systems. The RM750e, meanwhile, utilises a 120mm rifle bearing fan, which is also efficient and maintains low noise levels. Given the RM1200x SHIFT's higher wattage and advanced cooling solutions, it may be a better fit for more demanding setups, especially those using high-performance GPUs.

Power Delivery and Certification

Both power supplies are Intel ATX 3.1 certified, which means they can handle the latest hardware demands, including PCIe Gen 5.1. The RM1200x SHIFT is particularly robust, designed to resist transient power spikes, making it suitable for high-performance gaming rigs or workstations. On the other hand, the RM750e is also capable of withstanding 2x transient power excursions from GPUs, but its lower wattage may limit its suitability for extreme configurations, especially those that may push power limits.

Component Quality and Reliability

Reliability is a crucial aspect of any power supply, and both models boast high-quality components. The RM1200x SHIFT features 100% 105°C-rated Japanese electrolytic capacitors, which are known for their long-term reliability and performance. The RM750e also utilises 105°C-rated capacitors, ensuring steady power delivery. However, the premium components in the RM1200x SHIFT may offer an edge in terms of longevity and stability under heavy load conditions.

Noise Levels

When it comes to noise levels, both power supplies are designed to operate quietly. The RM1200x SHIFT’s 140mm fan is specifically engineered for low noise, while the RM750e’s 120mm fan is designed to keep fan noise down, even under full load. However, the larger fan in the RM1200x SHIFT may provide quieter operation overall, especially in demanding scenarios. If a silent build is a priority, the RM1200x SHIFT might be the better choice.

Price Consideration

Price is a significant factor in choosing the right power supply. The RM1200x SHIFT is priced at £174.98, which positions it in the premium segment of the market. In contrast, the RM750e at £81.99 makes it an attractive option for budget-conscious consumers. While the RM1200x SHIFT offers advanced features and higher wattage, the RM750e provides excellent value for standard builds without breaking the bank.

Which should you buy?

Choosing between the RM1200x SHIFT and the RM750e ultimately depends on your specific needs and budget. If you require a high-performance power supply for a demanding system and value features like innovative cable management and superior reliability, the RM1200x SHIFT is worth the investment at £174.98. However, if you are looking for a reliable, fully modular power supply for a more standard build without the need for extreme power, the RM750e at £81.99 offers excellent performance at a fraction of the cost. Your decision should reflect the requirements of your system and how much you are willing to invest in power supply quality and features.