CORSAIR RM1200x SHIFT Fully Modular ATX Power Supply - 80 PLUS Gold - ATX 3.1 - vs CORSAIR RM650e

Price Comparison

The CORSAIR RM1200x SHIFT is priced at £174.98, while the CORSAIR RM650e is significantly more affordable at £79.99. This stark price difference of £94.99 makes the RM650e an attractive option for budget-conscious users who still want quality performance from a reputable brand. The RM1200x SHIFT, on the other hand, offers higher wattage and advanced features that may justify its price for users with more demanding power needs.

Power Output

The RM1200x SHIFT boasts a substantial 1200W power output, making it ideal for high-end systems that require significant power, such as those featuring multiple GPUs or extensive peripheral setups. In contrast, the RM650e offers a lower output of 650W, which is still sufficient for mid-range builds. Users should consider their specific power requirements; while the RM1200x SHIFT caters to enthusiasts, the RM650e remains suitable for standard gaming rigs and everyday use.

Efficiency Ratings

Both power supplies are certified under the ATX 3.1 power standard, ensuring they meet modern efficiency and performance benchmarks. The RM1200x SHIFT is rated at 80 PLUS Gold, which indicates it operates with high efficiency, particularly under load. The RM650e also holds an 80 PLUS Gold certification, ensuring it delivers reliable power with minimal waste. This efficiency translates to lower electricity bills and less heat generation, benefiting users of both models.

Modular Cabling

A key feature of both power supplies is their fully modular design. The RM1200x SHIFT features innovative easy-access connections on the side, facilitating cleaner cable management and easier access for installation and upgrades. The RM650e also provides fully modular cabling, allowing users to connect only the cables they need, which simplifies the building process. This modularity is essential for maintaining a tidy build and improving airflow within the case.

Cooling Solutions

The RM1200x SHIFT employs a 140mm fluid dynamic bearing fan that has been engineered for high performance and low noise. This fan operates with a specially calculated curve, ensuring efficient cooling even under load while maintaining a quiet operation. The RM650e uses a 120mm articulating bearing fan, which similarly focuses on low noise levels. Both cooling solutions are designed to keep the power supplies running efficiently, but the larger fan in the RM1200x SHIFT may offer improved cooling capabilities, particularly in high-demand scenarios.

Component Quality

The RM1200x SHIFT is built with 100% 105°C-rated Japanese electrolytic capacitors, which are known for their reliability and long-term performance. This high-quality component choice enhances the power supply's longevity and ensures stable power delivery. The RM650e also utilises 105°C rated capacitors, ensuring a consistent and reliable current. While both units are equipped with quality components, the RM1200x SHIFT's premium build may appeal more to users looking for top-tier performance and durability.

Compatibility and Features

Both power supplies are designed to support modern hardware, as they meet the ATX 3.1 standard and are compatible with PCIe 5.1. The RM1200x SHIFT supports transient power spikes, making it a robust choice for high-performance systems. The RM650e is also capable of withstanding transient power surges, making it reliable for typical gaming setups. However, the RM1200x SHIFT’s advanced features may be more beneficial for users assembling high-end gaming rigs or workstations with demanding power requirements.

Which should you buy?

Choosing between the CORSAIR RM1200x SHIFT and the CORSAIR RM650e ultimately depends on your specific needs and budget. The RM1200x SHIFT is ideal for high-performance users who require a robust power supply with advanced features, while the RM650e presents an excellent choice for those on a budget who still want a reliable and efficient power solution. If you are building a high-end system or plan to upgrade in the future, the RM1200x SHIFT's capabilities may justify the investment. Conversely, if your needs are more modest, the RM650e offers solid performance at a significantly lower price.