Max wattage for psu choice?

Discussion in 'Newbie Lounge' started by Henski, Jan 15, 2022 at 10:23 AM.

  1. Henski

    Henski Member

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    Hi, I’m building a new system and I’m tossing up between a 750w, 850w or a 1kw psu.
    The psu calculator at newegg says I will use 630w or so with the below specs, psu thoughts? 750, 850 or 1k?
    asus prime x570, 5900x, 3080ti, 32gb ddr4 ram, 360mm aio, 1tb m.2 ssd, 2tb 2.5” ssd, 6 x 120mm fans
     
  2. jjjc_93

    jjjc_93 Member

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    Depends how far you want to OC and push the system as a whole. A good quality PSU will last you 10+ years so I always tend to overspec them to allow for future upgrades or builds.

    An oc'd and heavily loaded 5900x can pull up to 200w. A 3x8pin 3080ti with an xoc bios can pull 450-500w. These are far from typical values for the average user though, especially with both in use to that extent at the same time. I would go with a high quality 850-1k unit personally.
     
  3. CAPT-Irrelevant

    CAPT-Irrelevant Member

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    Do a PC Part Picker build, to assess for compatibility and capability.
     
  4. cbjaust

    cbjaust Member

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    Henski

    Henski Member

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  6. macktheknife

    macktheknife Member

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    I'm on a 850 with my system (9900k + 3080).

    There's enough good 850's at reasonable prices that you don't need to skimp with a 750 or lower, and 1000w is overkill for a normal system.
     
  7. HobartTas

    HobartTas Member

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    With expensive parts like that I always choose Titanium PSU's or at the very least a Platinum one as they are better built and less likely to fry anything. Also look at where the P.S. fan starts to spin up and add to noise, the more efficient you go the less electricity is wasted as heat so the fan doesn't spin up as easily which is another reason to go for a Platinum or Titanium one, probably 850 watts is the best bang for buck but if its not that much more to go to a kW one then choose that instead.

    In the past I'd simply recommend Antec or Corsair as being the best or alternatively Seasonic or Super Flower as they actually manufacture power supplies for themselves. With the other brands I can't really comment as they haven't been in the power supply market for a very long time.
     
  8. Oblivion-330

    Oblivion-330 Member

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    An 850w would be fine for those components but consider this:

    cpus and gpu's seem to be trending to use more power

    I have a seasonic 560W gold unit that I bought ages ago (its been kept through multiple builds) and at the time it could handle the majority of hardware combos but now its a bit small if I want to upgrade from my 3070 to something more powerful.
     
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  9. Skramit

    Skramit Member

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    850W is plenty.
     

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