CORSAIR HX1500i vs Corsair RM850e

Pricing Comparison

The CORSAIR HX1500i is significantly more expensive than the Corsair RM850e, priced at £229.00 compared to £92.99. This almost 2.5 times difference in price reflects the varying power capabilities and features of each power supply unit (PSU). The HX1500i targets high-performance systems requiring more power, while the RM850e caters to mid-range builds that do not demand such extensive wattage. The price difference may make the RM850e a more appealing option for budget-conscious consumers or those with less demanding power needs.

Power Output

When it comes to power output, the CORSAIR HX1500i leads with a robust performance capability that is ideal for high-end gaming rigs or professional workstations. It delivers a substantial 1500 watts, making it suitable for power-hungry setups. In contrast, the Corsair RM850e offers 850 watts, sufficient for most standard gaming PCs and everyday computing tasks. This significant difference in wattage means that users planning to run multiple graphics cards or other demanding components should consider the HX1500i, while those with more modest setups may find the RM850e perfectly adequate.

Modular Design

Both power supplies boast fully modular cabling, allowing users to connect only the cables necessary for their build. This feature is particularly beneficial for maintaining a clean and tidy interior of the computer case. The HX1500i, however, provides a more advanced set of features alongside its modular design. It includes powerful CORSAIR iCUE software, enabling users to create custom fan curves and monitor power settings. The RM850e, while still offering modularity, does not come with such extensive software options, possibly limiting the level of control users have over their system's cooling and performance.

Certification Standards

Both the CORSAIR HX1500i and the Corsair RM850e are Intel ATX 3.1 certified, ensuring they meet modern standards for power supply performance and compatibility. They support the PCIe Gen 5 platform, which is essential for future-proofing builds with the latest graphics cards. This shared certification indicates that both units are designed to handle transient power spikes effectively, providing reliability under load. However, the HX1500i’s additional features may offer an edge for users pushing their systems to the limit.

Cooling Performance

Cooling performance is a critical aspect for power supplies, especially under load. The CORSAIR HX1500i features a 140mm Fluid Dynamic Bearing fan designed for quiet operation and longevity. Its Zero RPM Fan Mode allows the fan to switch off completely at low to medium loads, ensuring near-silent operation during light usage. On the other hand, the Corsair RM850e uses a 120mm rifle bearing fan that is calculated to keep noise levels down even under full load. While both units aim to minimise noise, the HX1500i provides a more advanced fan system that could be crucial for users seeking an ultra-quiet experience.

Capacitor Quality

Capacitor quality can have a significant impact on the performance and longevity of a power supply. The CORSAIR HX1500i features high-quality components that contribute to its robust performance under demanding conditions. Although specific details about the capacitors in the HX1500i are not provided, it is designed to support high-performance systems. The RM850e, on the other hand, uses 105°C-rated capacitors, which are known for their reliability and steady power delivery. While both units are built for reliability, the focus on high-performance components in the HX1500i may appeal to users prioritising advanced capabilities.

Noise Levels

Noise levels are an important consideration for many PC builders, especially those who value a quiet computing environment. The CORSAIR HX1500i’s 140mm fan is designed for quiet operation, and its Zero RPM Fan Mode ensures that the fan does not operate at low to medium loads, effectively eliminating noise during these periods. In contrast, the Corsair RM850e's 120mm fan is engineered with a specially calculated curve to maintain low noise even under full load. While both units offer low-noise operation, the HX1500i’s more advanced fan modes may provide a quieter experience for users during light tasks.

Which should you buy?

Choosing between the CORSAIR HX1500i and the Corsair RM850e ultimately depends on your specific needs and budget. If you require a high-wattage power supply capable of supporting extreme gaming rigs or high-performance workstations, the HX1500i, with its £229.00 price tag, offers the necessary power and advanced features. However, if you are looking for a more budget-friendly option that still delivers reliable performance, the Corsair RM850e at £92.99 is an excellent choice for mid-range builds. Consider your power requirements, noise preferences, and budget before making a decision.