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Seasonic Prime 850w Gold PSU 80 Plus

  • 80 Plus® Gold
  • Fluid Dynamic Fan Bearing (135mm)
  • Premium Hybrid Fan Control
  • Cable-free Connection Design

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QuickFind: 788079

Mfr part code: SSR-850GD

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    Seasonic Prime 850w Gold PSU 80 Plus Product Description

    Seasonic Prime 850W Gold

    The Seasonic Prime Gold 850 watt power supply is fully modular and built with high quality components. Top-grade high-temperature capacitors provide an ultra-low resistance and copper plates replace wiring to further improve power efficiency. This unit boasts an impressive 0.5% tolerance for load regulation, which protects the components against damage emanating from power fluctuations. Innovative fan control system gets paired with a top quality Fluid Dynamic Bearing Fan to lower temperature and noise. This power supply is a great choice for anyone who appreciated a high quality power supply with an impressive electronic performance.

    Key Features

    ·  80 Plus® Gold - Seasonic was the forerunner of creating the very first 80 Plus® Gold certified power supply on the market and since that time it has built a very popular Gold series lineup that covers a full power range of power supplies with impeccable performance and efficiency. The highly efficient 80 Plus® Gold certification guarantees greater than 87%, 90% and 87% efficiency at 20%, 50% and 100% operating loads, respectively. The clear advantage of buying a power supply with 80 Plus® Gold rating is the fact that the less energy gets wasted during power conversion, the lower the operating costs will be for the user.

    ·  Fluid Dynamic Fan Bearing (135mm) - High performance Fluid Dynamic Bearing (FDB) fans are designed to take advantage of the impact absorbance effects of oil. They are extremely reliable and generate considerably less operating noise and heat than ball bearing fans. The lubrication of the bearing surface reduces friction and vibration and therefore lowers overall power consumption. Due to the effortless, quieter rotations and its robust construction, this reliable fan technology also greatly increases the lifespan of the fan.

    ·  How FDB Works - When the fan shaft rotates, high pressure oil drifts along the grooves of the bearing sleeve to generate a thin layer of lubrication between the bearing faces. As the speed increases, so does the dynamic oil pressure and the shaft is lifted from the bearing to create smooth, effortless rotations. The herringbone shape of the groves helps to efficiently channel the lubricant and avert leakage.

    ·  Premium Hybrid Fan Control - Seasonic's vast experience in designing the most silent and efficient power supplies on the market was translated into the development of Hybrid Mode a state-of-the-art fan control that enables users to keep the overall fan noise at the lowest possible level.

    ·  Power Supply Sound - The Seasonic Prime Series is designed with very favourable level of acoustics and it uses carefully selected components and innovative circuit design to minimise sound output. Beyond our rigorous internal tests, the power supply also went through external testing with the most popular graphics cards to ensure that the sound at all loads would be kept at the lowest possible level. The chart compares the sound level of the Seasonic Prime power supply to other ambient sounds.

    ·  Micro Tolerance Load Regulation - Seasonic's latest design keeps the output voltage within a very tight range, achieving under 0.5% (1% for 1000W and above) load regulation. This impressive electrical performance and stability makes this power supply an ideal choice for high-performance systems.

    ·  Cable-free Connection Design - Seasonic's engineers have implemented a new design feature, where instead of cables the back panel and the PCB (Printed Circuit Board) are connected by a copper plate. This breakthrough solution not only lowers the chance of production errors during manual insertion but it also improves output power quality.

    ·  12 Years Warranty - Our commitment to superior Seasonic quality.

    PSU Specifications

    AC INPUT: 100-240 VAC 11/5.5A 50-60Hz













    Detailed Specifications


    150mm x 86mm x 170mm (W x H x D)

    Input Voltage:

    100-240 VAC

    Input Current:


    Input Frequency Range:



    Active PFC (>.99)

    Power Good Signal:

    100-500 ms

    Hold Up Time:





    150,000 Hours


    OVP / SCP / UVP / OCP / OTP



    Operation Temperature:





    135mm FDB Fan


    < 17 dBA

    80 Plus Certified:

    Yes - 80 Plus Gold

    General Specifications

    Manufacturer Part Number:


    EAN Number:


    Has Mains Plug:




    What's In The Box:

    Power Supply
    Cable Ties

    Unit (Product) Dimensions (mm):

    150mm x 86mm x 170mm (W x H x D)

    Packaging Dimensions (mm):

    336mm x 134mm x 198mm (W x H x D)

    Net Weight (KGs):

    2.86 KGs

    Gross Weight (KGs):

    3.56 KGs


    Technical Specifications


    Device Type Power supply - active Power Factor Correction (PFC) - internal
    Specification Compliance ATX12V

    Power Device

    Input Voltage AC 100-240 V
    Frequency Required 50 - 60 Hz
    Power Output Connectors Details 1 x power 24 pin ATX with detachable 4 pin section ¦ 2 x power 8 pin +12V with detachable 4 pin section ¦ 6 x 8 pin PCI Express power with detachable 2 pin section ¦ 10 x 15 pin Serial ATA power ¦ 5 x 4 PIN internal power ¦ 1 x 4 PIN mini-power connector
    Output Voltage +3.3, +5, ±12 V
    Power Capacity 850 Watt
    Output Current +3.3V - 20 A ¦ +5V - 20 A ¦ +12V - 70 A ¦ -12V - 0.3 A ¦ +5VSB - 2.5 A
    Modular Cable Management Yes
    80 PLUS Certification 80 PLUS Gold


    MTBF 150,000 hours
    Cooling System 135mm fan
    Features Fluid dynamic bearing cooling fan
    Compliant Standards TUV, BSMI, CB, CCC, RoHS, WEEE, cTUVus, Energy-Related Products (ErP) Lot 6, REACH, EAC

    Environmental Standards


    Manufacturer Warranty

    Service & Support Limited warranty - 12 years

    Environmental Parameters

    Min Operating Temperature 0 °C
    Max Operating Temperature 50 °C

    Dimensions & Weight

    Width 15 cm
    Depth 17 cm
    Height 8.6 cm

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