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Seasonic Vertex GX-850

Seasonic Vertex GX-850 Specifications

The Seasonic Vertex GX-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®Gold and rated at Gold efficiency, reaching a peak efficiency of 90%. 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
Operating at 100-240 V input, it includes a 12-year warranty. Physical dimensions are 160 × 150 × 86 mm.

Seasonic Vertex GX-850 Performance Review

The Seasonic Vertex GX-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 achieves a high efficiency of 90% and carries a Gold certification. It balances cost and performance well and is a reliable choice for mainstream builds. The 12-year warranty reflects good long-term support.

This PSU offers moderate value, priced at $175.3 per kilowatt. It delivers decent performance and efficiency, making it a solid mid-range choice for most PC builds. It strikes a good balance between performance and cost, especially for builders prioritizing stability without overspending.

Power Supply Information

Manufacturer: Seasonic

Power Supply Name: Seasonic Vertex GX-850

Current Price Amazon: $149

  • Amazon Price Updated: 2 hours, 1 minute ago.

  • Power Supply Available: True

    Power Output: 850 W

    ATX Version / Form Factor: 3.0 / ATX

    Certifications: 80 PLUS®Gold

    Efficiency Rating: Gold

    Modular / Fanless: True / False

    Fan Size / Fan Stop: 135 mm / True

    Dimensions: 160 × 150 × 86 mm

    Warranty: 12 years

    Input Voltage: 100-240 V

    Performance

    Number of 12 V Rails: 1

    Output 12 V / 5 V / 3.3 V: 70 A / 20 A / 20 A

    Maximum Efficiency: 90%

    Calculated Performance

    Performance: 82.4%

    Performance per Price: 55.3%

    Price per kW: 175.3 USD/kW