The PRIME TX-850 PC power supply delivers 850 watts of power. With the One Seasonic initiative, the PRIME TX, PRIME PX, and PRIME GX series became the successors to the Seasonic PRIME and PRIME Ultra series. The PRIME series has consistently delivered outstanding performance and has, over the years, become the pinnacle of technological excellence and quality. This third generation of the PRIME series was introduced not only with a common naming scheme but also with updated overall design and connection cables. The PRIME Platinum Series achieves 80 PLUS Platinum certification with 94% efficiency at 50% system load. Seasonic's years of experience in developing the quietest and most efficient power supplies on the market have been incorporated into the development of Hybrid Mode. This is a state-of-the-art fan control system that allows users to keep overall fan noise at the lowest possible level.

• 850 watts of power
• Successors of the Seasonic PRIME and PRIME Ultra series
• 80 PLUS Platinum certification
• 94% efficiency at 50% system load
• Hybrid mode for minimal fan noise