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Thread: NOOB- First PC - PSU needed

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    NOOB- First PC - PSU needed

    I am starting my first pc build but have no idea really about the right psu .

    RYZEN 5 1600
    ASROCK AB350 PRO 4 mATX
    RX460 4GB (may change bought for asteal)
    2 TB HDD
    256 GB M.2
    Optical DVD drive
    2 120mm Fans
    1 200mm Fan
    2 Other (mem card port internals)

    I have list in partpicker saying 270W but coolermaster saying 600W

    Any help would be appreciated. Ive seen the EVGA 650GQ on offer but wondering if anygood and if was overkill.

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    Re: NOOB- First PC - PSU needed

    First thing is that you won't find many here who will reccommend stealing a GPU.

    Second, don't trust the PSU selling website for impartial advice about buying a PSU. 270W is the sort of minimum maximum, minimum as that gives you no headroom for expansion, maximum in that if all your components were whizzing around at full power (rare) that's what they'd draw. If you're sure you won't be getting any more or more powerful components, you could happily go with 300W, but 400 or 450W would probably be a good shout. Get a gold or better rated PSU as well, it'll save money in the long term.

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    Re: NOOB- First PC - PSU needed

    brilliant thanks @wazzickle

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    Re: NOOB- First PC - PSU needed

    Partpicker is super conservative - when hexus tested a 460 in a comparable system (overclocked intel processor), they saw a draw of 120W at the wall
    http://hexus.net/tech/reviews/graphi...o-4gb/?page=13
    No-one sells ATX PSUs that can't provide that. 400-450W is where most high quality PSU's start, in terms of wattage, and there isn't much issue with running well under the rated capacity (after all, that's what a PC at idle will do to even a suitably rated PSU). Seasonic is a reliable PSU brand, but if you go with a name brand PSU there shouldn't be any troubles

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    Re: NOOB- First PC - PSU needed

    Quote Originally Posted by liams View Post
    Any help would be appreciated. Ive seen the EVGA 650GQ on offer but wondering if anygood and if was overkill.
    Yep, it's good - I've got the 650 GQ. It's nice and quiet, pretty much silent on eco mode. Plus, the flat cables are easy to work with which will help as it's your first build.

    Wattage-wise, there's no harm in buying more than you need. It's not like the prices are massively different at the starter end of things, and it leaves room for future expansion.

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    Re: NOOB- First PC - PSU needed

    Gonna go ahead with the 750gq then only £10 difference to the 650 and want neeed to upgrade thanks.

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    Re: NOOB- First PC - PSU needed

    Can't go wrong with EVGA - Their kit is top notch and their warranty is stunning. I love 'em.
    I have the 1000w G2, myself. I likely won't need it, but it was less than a tenner more than the next level down.

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    Re: NOOB- First PC - PSU needed

    Quote Originally Posted by Ttaskmaster View Post
    Can't go wrong with EVGA - Their kit is top notch and their warranty is stunning. I love 'em.
    I have the 1000w G2, myself. I likely won't need it, but it was less than a tenner more than the next level down.
    Obviously a totally different price segment. G2 is Superflower, whereas GQ is FSP. There is a reason why the G2 gets a 10 year warranty while the GQ gets only a 5 year one. The GQ also looses the semi-fanless mode according to Skinflint.

    Aria have the EVGA SuperNOVA G3 550 550W for £78 which is 'only' £12 more than the GQ. Less watts but a better supply (but only years warranty unlike the larger G2s), but has the semi-fanless mode and is fully rather than hybrid modular if that matters to the OP. More money though. It did get 10/10 from Jonnygury which I've never seen before:
    http://www.jonnyguru.com/modules.php...Story&reid=440

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    Re: NOOB- First PC - PSU needed

    Quote Originally Posted by kompukare View Post
    Obviously a totally different price segment. G2 is Superflower, whereas GQ is FSP. There is a reason why the G2 gets a 10 year warranty while the GQ gets only a 5 year one.
    I was thinking more about EVGA's level of customer care, really. They're well-known for doing right by their customers and going the extra mile.

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    Re: NOOB- First PC - PSU needed

    Quote Originally Posted by liams View Post
    Gonna go ahead with the 750gq then only £10 difference to the 650 and want neeed to upgrade thanks.
    The disadvantage of going for huge 650W+ PSUs is that PSUs tend to not be very efficient at low percentage loads, so while drawing 30W for web browsing you might be running at 65% efficiency at 4% load instead of 80% efficiency at 10% load on a 300W PSU.

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    Re: NOOB- First PC - PSU needed

    Efficiency at low load doesn't really correlate well with overall capacity, compare these for example:
    http://hexus.net/tech/reviews/psu/99...0w-psu/?page=4
    http://hexus.net/tech/reviews/psu/10...0-600w/?page=5
    At 20W load, a selection of 1.2KW PSU's varied between 75-65% efficiency. And with a selection of 600W PSU's under the same 20W load, efficiency varied between 75-65%. The efficiency rating of the PSU in question is more important than the % of the overall capacity being supplied

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    Re: NOOB- First PC - PSU needed

    Quote Originally Posted by Xlucine View Post
    Efficiency at low load doesn't really correlate well with overall capacity, compare these for example:
    http://hexus.net/tech/reviews/psu/99...0w-psu/?page=4
    http://hexus.net/tech/reviews/psu/10...0-600w/?page=5
    At 20W load, a selection of 1.2KW PSU's varied between 75-65% efficiency. And with a selection of 600W PSU's under the same 20W load, efficiency varied between 75-65%. The efficiency rating of the PSU in question is more important than the % of the overall capacity being supplied
    The 1200W PSUs are substantially more efficient to begin with, hitting 93-94% at 50% load instead of 84-89%. Those results seem to be a quirk of comparing PSUs of different quality rather than a general reflection when all else is equal.

    I'm sure a 94% peak efficiency 600W PSU would have greater efficiency with the 20W load.

    Although I don't know how much extra power it takes to manufacture a high efficiency PSU, it may be more green overall to go for a small, cheap PSU that's good enough to do the job and not excessive.

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