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Thread: Seasonic Prime 650W Review

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    Arrow Seasonic Prime 650W Review

    It's hard to believe that, after waiting so long for the Seasonic Prime units, we are now finally looking at the baby in the family, the 650 watt model. And yet, here we are. Until Seasonic comes up with some more Prime goodness, we've now seen all the models there are to see but the fanless one which is not out yet. Let's find out how this one stacks up against its big brothers.
    http://www.jonnyguru.com/modules.php...Story&reid=493

    Happy Halloween!

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    Excellent review Wolf,
    Seasonic continues to impress, if the price was a bit lower i would definitely consider it as a replacement PSU.
    650 is pretty much good for almost everyone and with plenty of overhead.

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    Quote Originally Posted by Oklahoma Wolf View Post
    Thank you, and happy howling!

    P.S.: Wolf, is there a small typo when dealing with the Overshoot Transient Testing? Providing my english is good enough (and that's far from certain), seemingly you call the SF450 a CWT unit: but isn't it a Great Wall one?
    Best, Luca

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    Fixed.

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    Oh so now you've decided to score on the transient results. I see...
    Last edited by rares495; 11-01-2016 at 10:58 AM.

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    Quote Originally Posted by rares495 View Post
    Oh so now you've decided to score on the transient results. I see...
    You should be happy and instead you're looking for further arguing? Tsk tsk...
    Best, Luca

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    Quote Originally Posted by rares495 View Post
    Oh so now you've decided to score on the transient results. I see...
    Do you have anything constructive to add, or are you just looking for trouble?

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    Well, here's how: Intel does say there has to be a "smooth and continuous" ramp to nominal voltage, but there's sort of some room for interpretation there
    The smooth turn-on requires that, during the 10% to 95% portion of the rise time, the slope of the turn-on waveform must be positive and have a value of between 0 V/ms and [Vout, nominal / 0.2] V/ms. Also, for any 5 ms segment of the 10% to 95% rise time waveform, a straight line drawn between the end points of the waveform segment must have a slope ≥ [Vout, nominal / 20] V/ms.
    Very good and detailed explanation of the desired waveform. I see no room for interpretation. Anybody see something I miss?
    Technically, testing should be only as a pass fail option. If power supply does not pass all of the test points described in the specification, it can be argued that it does not meet the specifications of ATX standard.
    Scoring is a subjective opinion and as such can not be wrong nor right.
    I think scoring helps readers, but can easily be confusing too.
    So IMO, If you are changing the way of scoring, it should be mentioned in the test methodology.

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    I'm glad you scored those cables the way you did. Just enough to get their attention. On some of the older Seasonic cables, you had a 2x8 plug with two sleeved cables coming from it. There was a single PCIe plug on each cable. I wish they would go back to that. As you said, "Seasonic uses 18 gauge wire to keep them flexible, and I'm not sure that's a good idea with the daisy chained PCIe cables . . . this unit comes with."

    As for the new S&C point -- someone has to push OEMs to market better PSUs. Who better than reviewers?
    Core i7 4770K @4.3GHz + iGPU | GA-Z87X-UD4H | 2x8GB Crucial Ballistix DDR3@1600MHz
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    Samsung 840 Pro 512GB SSD | WD Black 4TB file disk | WD Red 3TB backup disk
    Fractal Design Define R5 case w/2 x NF-A14 ULN front fans | no exhaust fan; grill removed
    PSU Seasonic X-650 Gold

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    Quote Originally Posted by rares495 View Post
    Oh so now you've decided to score on the transient results. I see...
    So... Here's the thing...

    PSUs evolve. The reviews need to evolve.

    That's why people need to READ THE REVIEW.

    PSU's get better every year due to improvements in technologies. We can't judge a PSU made today against a PSU made five years ago and come to the same conclusion. At some point, you have to change the grading scale so everything doesn't get a 10. If you're one of those people that read just the last page of the reviews from today versus 10 years ago and assume anything with a 9+ is equal, guess what... you don't know how to read reviews.

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