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Recommended PSU for this build?

Here's the link to the build: http://pcpartpicker.com/p/qYwVVn

Until recently, I thought that all power supplies were the same with the exception of the company that made them and the wattage they delivered. I also want to futureproof this PSU, so I was thinking about a 750W would be substantial. However, I have been informed that the SuperNOVA NEX is not that great of a PSU, and was recommended to some PSU with a G2 in the name. So my question is this; why isn't the NEX a good PSU type and would changing the PSU to just a SuperNOVA 750 be substantial? I can't seem to find a compatible G2 with 750W. Thanks for any and all responses!
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  1. Best answer
    The g1 & b1 while looking the same are completely different lower quality units.

    You don't need a 750w PSU

    A good quality 550w+ will do the job fine.
    Any xfx unit , any evga unit labelled b2,g2,GS.
    Any seasonic ,any superflower, any antec hcg or true power classic

    All those will do a grand job.
  2. http://www.amazon.com/dp/B00KFAFRW6/?tag=pcpapi-20

    There's a b2 for $65 - that's a superflower unit & cannot be faulted - ignore the bronze vs gold ratings - they're insignificant.
  3. The power you need is largely determined by the graphics configuration.
    A single GTX970 needs only 500w.
    Here is a chart for other options:
    http://www.realhardtechx.com/index_archivos/Page362.htm
    If you are planning on sli(which I do not recommend) then 750w is appropriate.

    I have no problem overprovisioning a PSU a bit. Say 20%.
    It will run cooler, quieter, and more efficiently in the middle third of it's range.
    A PSU will only use the wattage demanded of it, regardless of it's max capability.

    As to quality, there are several tiered lists of psu quality.
    Here is one:
    https://community.newegg.com/eggxpert/computer_hardware/f/135081/t/45344.aspx?Redirected=true

    For any prospective psu, try to find a review by a reputable expert like jonnyguru.com.
    Seasonic is always good.
    And, I put little value on modular, you are going to use most of the leads anyway.
    On anything but a small form factor case, there is always a place to tuck a few unused leads out of the way.
    Gold rating is not worth it for any energy savings either.

    As to the rest of your build, It would have been excellent a year ago.

    Today, I would suggest a skylake based build if you are a gamer.
    Few games can use more than 2-3 cores, so the hyperthreads of a i7 will go largely unused.
    The faster core speeds of a i5-6600K will be better and cost less.
    A 16gb kit of DDR4 2400 ram will be priced the same as ddr3.
    $150 will buy you a decent Z170 lga1151 motherboard.

    Love the idea of a ssd for windows.
    But, 120gb is too small and will fill up quickly.
    Many things want to go on the "C" drive besides windows.
    look at 240gb at least. Defer on the hard drive until you actually need the space.
    I like Samsung evo for quality.

    Regardless, you will want a cpu cooler. Cryorig H7 is good.
    Coolers come with adequate paste, no need for extra as5.

    Here is my canned rant on planning for dual cards:
    -----------------------------Start of rant----------------------------------------------------
    Dual graphics cards vs. a good single card.

    a) How good do you really need to be?
    A single GTX750t1 or R7-265 can give you decent performance at 1920 x 1200 in many games.
    Yes, you may need to be satisfied with less than high settings.

    A single GTX970 or R9-390X will give you excellent performance at 1920 x 1200 in most games.
    Even 2560 x 1600 will be OK with lowered detail.
    A single GTX980ti is about as good as it gets for a single card.

    If you are looking at triple monitor gaming, or a 4k monitor, sli/cf will be needed for excellent frame rates.
    A single GTX980ti or Furyx will give good frame rates in many games.
    Next year, it looks like single card performance will go up by 50%

    b) The support costs for a single card are lower.
    You require a less expensive motherboard; no need for sli/cf or multiple pci-e slots.
    Even a ITX motherboard will do.

    Your psu costs are less.
    A card as good as a R9-FURY or a GTX980ti will need only a 620w psu.
    When you add another card to the mix, plan on adding 200w to your psu requirements.
    75w for the slot, 75w for an extra 6 pin connector or possibly more.
    Here is a chart:
    http://www.realhardtechx.com/index_archivos/Page362.htm

    Case cooling becomes more of an issue with dual cards.
    That means a larger and possibly expensive case with more and stronger fans.
    You will also look at more noise.

    c) Dual gpu's do not always render their half of the display in sync, causing microstuttering or screen tearing. It is an annoying effect.
    The benefit of higher benchmark fps can be offset, particularly with lower tier cards.
    Read this: http://www.tomshardware.com/reviews/radeon-geforce-stutter-crossfire,2995.html

    d) dual gpu support is dependent on the driver. Not all games can benefit from dual cards.

    e) dual cards up front reduces your option to get another card for an upgrade. Not that I suggest you plan for that.
    It will often be the case that replacing your current card with a newer gen card will offer a better upgrade path.
    -------------------------------End of rant-----------------------------------------------------------
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