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Thread: XFX Pro Series 1250W Black Edition review

  1. #31
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    Quote Originally Posted by Travis View Post
    I'm surprised that the OCP did trigger. If XFX hasn't made any change to the original Seasonic configuration, the trip point on each rail should be at ~60A or so.
    You sure about that? From what I've found, XFX was unaware of any OCP, so why would Seasonic set it lower for a customer than they would for themselves without checking with them first?

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    Quote Originally Posted by jonnyGURU View Post
    You sure about that? From what I've found, XFX was unaware of any OCP, so why would Seasonic set it lower for a customer than they would for themselves without checking with them first?
    XFX didn't know it was multi-rail? Wie ist das möglich?

    Is there a way to tell whether a psu has single rail or multi-rail by looking at its innards?
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    Quote Originally Posted by ehume View Post
    Is there a way to tell whether a psu has single rail or multi-rail by looking at its innards?
    Yes.
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    Quote Originally Posted by ehume View Post
    XFX didn't know it was multi-rail? Wie ist das möglich?

    Is there a way to tell whether a psu has single rail or multi-rail by looking at its innards?
    Yes, as you'll see the labels (12v1, 12v2, 12v3, 12v4) sometimes silk-screened onto the PCB, or you'll see multiple shunts in place.

    From an overhead shot, it's not always transparent though, as the parts which are used to enable OCP are often hidden under the cables coming off the PCB to go out of the unit, or under the main PCB itself.

    So it often takes a full dissection to find out.

    That said, finding out that the X-Series 1050w/1250w units are actually multi-rail designs is fairly interesting and increases their value in my mind. Though, I do wish this was a transparent fact and not something hidden away.

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    Just a point about the final score table.
    Performance 9.5
    Functionality 10
    Build Quality 9.5
    Value 9
    Total Score 9.4
    the value score for the XFX Pro 1250W is an 8.5.
    Working it out on the 8.5 score gives the 9.4 final rating as listed, the 9 rating in the table gives a 9.5 final score.
    I think it should have been dinged a little more for failing to hit gold by over 2%, that's well outside any error margin. I wonder what XFX did to the design to make it miss by that much, or was it just a bad unit?
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    mine sample hit 90% at full load with 230VAC so it is easily over 87% with 115V. Probably bad sample.

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    I'd chalk it up to either a bad sample or an issue with the equipment (but most likely not the latter.)

    Either way, the efficiency is by far the least important aspect; even on high wattage units like this. And it's no where near as bad as the Andyson-Swap some guys are doing. Or the blatantly false advertising where something is supposed to hit gold and barely does bronze.

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    if I didn't have so much work to do (and wasn't also bored to death ) I would test mine at 115V since I still have it. But nowadays I am running like crazy so no chance to do this.

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    Well judging by the similarities between this and the SS-1000XP; as well as the two reviews done between TPU & JG. I doubt the difference would be 5-6% in terms of full load efficiency.

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    Yes, as you'll see the labels (12v1, 12v2, 12v3, 12v4) sometimes silk-screened onto the PCB, or you'll see multiple shunts in place.

    From an overhead shot, it's not always transparent though, as the parts which are used to enable OCP are often hidden under the cables coming off the PCB to go out of the unit, or under the main PCB itself.
    Sometimes, shunts are soldered together as a hackjob to turn a unit into single rail one.

    Sometimes you can tell without even opening the unit, by checking for stripes on yellow wires. Units with multiple rails tend to have such stripes of different colors on respective rails. Of course even then, there could be a hackjob like mentioned above.

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