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PSU What size PSU for this upgrade?

Discussion in 'Hardware' started by dadoftriplets, 4 Apr 2015.

  1. dadoftriplets

    dadoftriplets New Member

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    I need a new PSU for an upgrade to my current rig. The new build is going to be

    i5 4690K
    Gigabyte Z97 board - not decided which,
    AIO water cooler - Either my current H80 or the larger H110 - not decided yet
    R9 270x.

    I have looked at the PSU estimators which say this will need a 550 watt PSU, but I stumbled upon a video which says that I should be adding a further 150 watts on top to provide overhead which has really confused me???

    FWIW, my current PSU is an OCZ Stealth2 something 600 watt which is going into my kids build which currently needs a new PSU (thought I'd upgrade my PSU instead :) )

    I am going to be overclocking the CPU as well if this adds in anything and I am looking at either semi or full modular PSUs as well

    Any advice and recommendations would be gratefully received.
     
  2. The_Crapman

    The_Crapman Don't phone it's just for fun.

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    550w will be more than enough for your rig.
     
  3. Deders

    Deders Well-Known Member

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    Agreed, I expect the calculators already added the extra overhead into the equation.
     
  4. Shirty

    Shirty W*nker! Super Moderator

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    As above, even a decent 450W unit would suffice.
     
  5. oasked

    oasked Stuck in the Mud

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    I'd get a 600w unit, it'll give you a bit of margin and it'll still be fairly cheap. Something by Corsair, Enermax or Silverstone would be good.
     
  6. edzieba

    edzieba Virtual Realist

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  7. dadoftriplets

    dadoftriplets New Member

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    Sometime in the next 6 months I will be upgrading the the GPU from the 270x to something in the range of the 280/280x - 290/290x or Nvidia ??? - will the 550 be enough for this additional upgrade or would it be better to go for the slightly larger 600 watt?
     
  8. The_Crapman

    The_Crapman Don't phone it's just for fun.

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    When I was running a core2quad and gtx 480 both with hefty overclocks, i was pulling less than 450W, so 550 would still be more than enough with one of the gpu's you mentioned.
     
  9. dadoftriplets

    dadoftriplets New Member

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    Thanks - one final question. Is there any reputable brands i should avoid? And any I should consider?

    I have been looking at the Cooler Master VSM650 Semi(Hybrid) Modular PSU as it seems decent and is well backed with a very good 5 year warranty. other than that one, I'm not entirely sure what brands to go for, apart from Corsair that is.
     
  10. edzieba

    edzieba Virtual Realist

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    Easy way is just to go for PSUs with an 80+ certification.
     
  11. ak_2020

    ak_2020 Member

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    a Corsair CX 500 should do alright. 80+ bronze rated, and cand be had for less than fifty quid. Or for a few extra quid you can get the semi-modular version (CXM 500)
     
  12. dadoftriplets

    dadoftriplets New Member

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    thanks for the recommendation. I'll take a look in the morning.

    edzieba mentioned to go for anything with an 80+ rating - Scan have some PSUs by a company called Powercool which are listed as being 80+ rated, but are less than half the price of a brand i recognise - Are these PSUS likely to be as bad i think they are without trying them or is it an OEM brand i've never heard of (not that i would buy a PSU as cheap as that as you get what you pay for)

    As an example
     
  13. edzieba

    edzieba Virtual Realist

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    It's not listed by 80+, so it looks like Powercool are telling porkies.
     
  14. Deders

    Deders Well-Known Member

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  15. dadoftriplets

    dadoftriplets New Member

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    Last edited: 7 Apr 2015
  16. JamesRC

    JamesRC Member

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    Great purchase, I've just bought a similar XFX one myself. Yep, it's a rebadged Seasonic :)
     
    Last edited: 13 Apr 2015
  17. silk186

    silk186 Derp

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    650w is what I would have gone with.
     

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