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Will a Corsair SF450 be fine for a 3700x / Red Dragon 5700XT build?

Discussion in 'Power Supplies' started by exhashdotdot, Jan 14, 2020 at 10:52 AM.

  1. exhashdotdot

    Wise Guy

    Joined: Dec 19, 2009

    Posts: 1,516

    Currently using a 550watt Antec bp550 plus but will be aiming to go down to an SFFPC soon.

    I know I could get the SF600 but I feel that might be a bit redundant. The only other parts in my computer are an M2 drive and 16 GB of RAM. No RGB.

  2. Grimley


    Joined: Nov 18, 2007

    Posts: 6,204

    Location: Deepest Darkest Essex!!

    PC partpicker wattage calculator says that spec with an aircooler & a B450 board will be just short of 400w at full load. I wouldn't risk it TBH for the sake of saving a few quid.
    Last edited: Jan 14, 2020 at 1:49 PM
  3. pastymuncher

    Man of Honour

    Joined: Jul 12, 2005

    Posts: 18,138

    Location: Aberlour, NE Scotland

    Get the SF600, better to have too much than too little. While the SF450 is a excellent psu I would want more headroom than that provides. I hope you aren't using that BP550 plus with the 3700x/5700XT as it's only a low end budget psu and only has 384w on it's 12v rails.
  4. tonys


    Joined: Oct 18, 2002

    Posts: 711

    Just checked my build for wattage draw and it only went up to 270watts while playing BF5 team deathmatch.
    Gigabyte x570 I
    GTX 1080
    2x M.2
    2x 8Gb 3600 memory
    Cryorig C7 Graphene cooler
    2x Be silent 120mm fans
    Corsair 450w sff psu
    Node 202 case