Seasonic Vertex PX-850

Seasonic Vertex PX-850 Specifications

The Seasonic Vertex PX-850 by Seasonic is a power supply unit that provides 850 watts of power output. This unit follows the 3.0 standard and comes in a ATX size. It is certified with 80 PLUS® Platinum and rated at Platinum efficiency, reaching a peak efficiency of 92%. It features a 135 mm cooling fan with fan stop support, and is actively cooled. This PSU is modular . It delivers:

• 70 A on the 12V rail (1 rail(s))
• 20 A on the 5V rail
• 20 A on the 3.3V rail

Seasonic Vertex PX-850 Performance Review

The Seasonic Vertex PX-850 is a high power PSU, sufficient for mainstream gaming systems and content creation workstations. It provides sufficient power for systems with modern multi-core CPUs and performance-class GPUs, offering headroom for overclocking and future upgrades.

This PSU provides a very high efficiency of 92%, rated as Platinum. It offers superior energy conversion and lower heat output, making it ideal for performance systems. The included 12-year warranty suggests strong build quality and long-term reliability.

From a cost-efficiency standpoint, this PSU offers low value, with a high cost of $375.3 per kilowatt. However, it compensates with high performance and top-tier efficiency, which justifies the premium for users seeking maximum reliability and power delivery. Enthusiast builders and professionals may still find it worthwhile despite the cost.