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Thread: PSU Help

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    PSU Help

    Im building a gaming pc but im not to sure what size psu i should use. could someone please help me and say what i should use thank you

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    Ghost of Hexus Present sammyc's Avatar
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    Re: PSU Help

    Hi and welcome smithy

    If you repost your query within the hardware section http://forums.hexus.net/hexus-hardware/ someone should be able to advise you.

    Enjoy HEXUS, any questions, just ask. Have a look at these links for useful info: Post counts etc, welcome to hexus.
    Aliorum vitia turbaverunt me

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    Re: PSU Help

    Moved to the hardware section...
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    Re: PSU Help

    I got a Coolermaster Silent Pro 600w and it runs an i7 920 plus a GT 250 no bother at all. Was pretty good value for money and is modular so pretty handy. Only two 6/8pin PCIE connectors though so not sure if thats enough for you.

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    Re: PSU Help

    Quote Originally Posted by smithy261 View Post
    Im building a gaming pc but im not to sure what size psu i should use. could someone please help me and say what i should use thank you
    What are your other components going to be?

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    Re: PSU Help

    Quote Originally Posted by marktime View Post
    What are your other components going to be?
    This here be the info we need smithy

    Hawker
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  8. #7
    Sprouts are not food Attila the Bun's Avatar
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    Re: PSU Help

    smithy,

    Here is a reply that I posted on zyte's new build thread.
    This is the methodology I used to choose my PSU.

    Quote Originally Posted by Attila the Bun View Post
    Zyte, The best thing you can do is google a review on the PSUs that catch your eye. Your spec is beginning to look what I ended up with when I did my build a few weeks ago. So you might want to do what I did when choosing my PSU:

    1. Checked of the power consumption of each component and added them together to get a ball park figure of Wattage required. You can find this info on the adverts or at the manufacturers website.

    2. I then thought about what might I add in the future. HDDs, SSDs, another optical drive or another GPU (in my case it will be an SSD and a BLURAY/DVD ROM. Add these potential extras to the Wattage total.
    Now I have read on a number of sites that you will prolong the life of your PSU and considerable improve the smoothness of the power supply if you ensure that there is plenty of spare watts to play with. I think I worked my total requirement with future additions to be around 500w. So decided that a PSU between 550w and 650W would be more than adequate.

    3. I also checked to see how efficient they were and decided that a Bronze standard was a minimum requirement.

    4. Finally, did I go Modular or not, I went modular because I like a tidy computer and don't like lots of wires lying about. However, I would have got a non-modular PSU if all my primary requirements + modular came in above budget.

    Once I'd got all my requirements, I used SCANs comparison facility and got a shortlist of 4-5 PSUs. I then went off, googled reviews on my choices and canvased HEXUS members opinions.

    After about 2 hours work in total I arrived at my choice.

    Edit: I'm not suggesting you should choose the same PSU as I did but the process I used has served me well in the past.
    Hope this helps
    Of course I'm perfect you just need to lower your expectations.

  9. #8
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    Re: PSU Help


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    Re: PSU Help

    Without listing the components which are going to be used it's impossible to sugest any thing.

    What Attila the Bun posted is sound advice, one thing to note here is that the cpu & graphics card will be using around 90% of the power requirements between them, these are the two big things that need power in a computer.
    Rule of thumb for a hard drive is around 20watts max so a large raid array of 5-6 drives will have an impact but one or two will not matter much.

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    Re: PSU Help

    Quote Originally Posted by dfour View Post
    I just had a look at this and it seemed to be way over-estimating. I put in my system details and it recommended a 1000W, when my existing 750W is already overkill.

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    Re: PSU Help

    Quote Originally Posted by Skulltrail View Post
    I just had a look at this and it seemed to be way over-estimating. I put in my system details and it recommended a 1000W, when my existing 750W is already overkill.
    Those PSU calcs always overestimate horribly, not even worth a look really.

    Hawker
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    Re: PSU Help

    To be fair to it, I put in my system specs and it told me to buy the PSU I bought originally as advised by lovely Hexus! You could do it and then pick the smallest advised.

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    Re: PSU Help

    This thread has raised an issue for me as I'm shortly about to order a Scan P55 OC system. When you select the i3 upgrade option you have to choose the 650W Corsair modular PSU (i know they will fit other PSUs if asked). Now I just used Scan's own PSUconfig tool linked above and even with selecting a moderate overclock (which 4Ghz isn't) and 2 GPUs it still recommends a minimum of 750W. The conflicting message here is a bit confusing.

    I trust Scan's judgement but now I'm concerned that 650W isn't enough to SLI and have enough left over to add extra drives etc if required later.

    What do you think? (sorry if this should have been posted on Scan's section).

    EDIT: I have just notice the posts advising that these estimators generally over-estimate a lot so I looked at some more reviews and found this which has put my mind at rest:
    http://www.tomshardware.com/reviews/...0,2694-10.html
    Last edited by george1979; 24-08-2010 at 05:53 PM. Reason: haste

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    Re: PSU Help

    it will be things like a intel core i5 6661 3.33ghz processor
    Motherboard: gigabyte ga-h55m-ud2h intel h55
    Memory: Ocz gold 4gb ddr3 10666c9 1333mhz
    graphics card: ocuk geforce 8800gts 640mb gddr3

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    Re: PSU Help

    Quote Originally Posted by smithy261 View Post
    it will be things like a intel core i5 6661 3.33ghz processor
    Motherboard: gigabyte ga-h55m-ud2h intel h55
    Memory: Ocz gold 4gb ddr3 10666c9 1333mhz
    graphics card: ocuk geforce 8800gts 640mb gddr3
    Is this stuff you already have, or are you looking to buy? Reason I ask is the video card is a bit long in the tooth and I'm sure there might be some better options atm.

    What's your overall budget (including the PSU)? I'm sure some of the gurus on here will spec a setup for you if you give them the limit of what you can afford.

    As it stands I would have thought a decent 500/550w PSU would run that system without a problem.

    Something like this would be a reasonable budget PSU

    http://www.scan.co.uk/Products/550W-...A-inc-P2-Cable

  17. #16
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    Re: PSU Help

    I have to agree with the above poster that around 500W is the mark your after, but that PSU is a terrible choice. PSUs are a part of your system that you cant afford to compromise on. You want to be looking at the decent brands here:

    Corsair, Bequiet, OCZ, Silverstone, enermax. Any of these brands will see you well, theres a good reason their equivant units cost much more.

    Hawker
    Media Centre: C2D E5300@3.6Ghz : Gigabyte G31M-ES2L : 2GB Crucial Ballistix DDR21066@1106mhz : Sapphire HD5450 : Haupaggue WinTV Nova-T 500 : Seasonic 380W : Corsair X32 32GB SSD : WD 250GB HDD : LG Blu-Ray/HDDVD ROM DVD-RW : Scythe Shuriken BIG Quiet : Lian-Li PC-C37 :
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    Laptop: Packard Bell EasyNote BG45-U-300 : 12" : Dual Core T2390 1.87Ghz : 2GB DDR2800 : Corsair X32 32GB SSD : Intel GMA X3100 :


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