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Thread: Preview: Corsair HX750i, the step above RMi @HWI

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    Quote Originally Posted by sith'ari View Post
    Is it the HXi a step above, or a step below RMi after all? (*efficiency excluded)?
    IIRC it's all a cable matter: the ones which Mask likes should be a step below.
    Best, Luca

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    Quote Originally Posted by sith'ari View Post
    If the experts are devided...
    I'm sorry. Which "experts"?

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    Quote Originally Posted by jonnyGURU View Post
    I'm sorry. Which "experts"?
    Though I'd have probably asked: "divided about what?".
    Best, Luca

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    Quote Originally Posted by quest for silence View Post
    Though I'd have probably asked: "divided about what?".
    Ehh, what?
    If i'm not mistaken, on pages 1 & 2 , we have some difference of opinions, about the tolerances of the connectors, and how much load they can withstand.
    Behemot claimed that these loose limits (40A+-)could lead to very dangerous conditions, while Mask claimed that if the limits were lower, it could lead to frequent shutdowns when people misuse them.
    (Personally if there was a choice, i would prefer safety over shutdowns, in my opinion)

    Originally Posted by jonnyGURU
    I'm sorry. Which "experts"?
    Well, if i'm not mistaken, both @the Mask & @Behemot, are reviewers, thus they can be considered as experts. Right ?
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    Quote Originally Posted by sith'ari View Post
    Behemot claimed that these loose limits (40A+-)could lead to very dangerous conditions, while Mask claimed that if the limits were lower, it could lead to frequent shutdowns
    Oh, about that! You have always to quote properly, when commenting.

    IMO it's not a matter of tripping points, but of how many connectors: having just enough on any and each rail would settle "such" debate. But I'm not an "expert", you know.
    Best, Luca

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    Quote Originally Posted by sith'ari View Post
    Ehh, what?
    If i'm not mistaken, on pages 1 & 2 , we have some difference of opinions, about the tolerances of the connectors, and how much load they can withstand.
    Behemot claimed that these loose limits (40A+-)could lead to very dangerous conditions, while Mask claimed that if the limits were lower, it could lead to frequent shutdowns when people misuse them.
    (Personally if there was a choice, i would prefer safety over shutdowns, in my opinion)
    I agreed with The Mask. That's why I asked which experts.

    You don't want the OCP too low because high end graphics cards would trip OCP. Too high and it simply doesn't work if there's a short.

    My point, in my reply to Behemot, was it doesn't matter how many "rails" you have because it only takes one short on one pin to trip OCP and that's going to happen whether you have one 40A rail or twenty.

    There's a bit of hypocrisy when someone says "it doesn't need multiple +12V rails" when the PSU is "only" a 500W because that PSU can still have a 40A +12V rail. The same short condition can still exist and cause just as much damage if there's no OCP and a short causes the PSU to go over 40A.

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    Quote Originally Posted by jonnyGURU View Post
    I really wish our PR people would hand out the reviewers guides with these units. It would make things so much easier.
    Must resist the temptation...
    But I resist and be a good boy today...

    Still why are you using two of these WT7518 on the RMi and HXi??
    Haven't found that many shunts on the modular PCB on my two units (but threadlocker on the HXi)

    And I don't want to use my LF-8800 thingy on either the RM650i or the HX750i...

    Quote Originally Posted by sith'ari View Post
    Is it the HXi a step above, or a step below RMi after all? (*efficiency excluded)?
    In the area we are talking about, does it really matter at all?!

    The first question should always be if the equipment is able to go that low and than does it matter at all (or what benifit do YOU get of something) if something is better or not - because something can be better but it doesn't matter at all because of various things...

    Like the question if you are able to really measure this 'improvement' with your equipment reliable or is whatever you are measuring already in the area your equipment isn't good enough to measure it at all??
    And thus what you're measuring really isn't the riple/noise of the PSU like it should be but some shit coming from your lighting...
    Or your neighbours washing mashine or whatever...

    That's the first question you have to ask...

    After that you have to think about how much does it matter at all...

    The buttom line is that the HXi is more expansive and more efficient.
    The RMi is a little less efficient and cheaper.
    And on some units you have more connectors on the HXi vs. the RMi - for example the 750W RMi vs. 750W HXi - the HXi has 2 more PCie connectors and AFAIR one peripherial connector.

    The RMi has caps in the cables and also the voltage sense pins used...

    Still, voltage regulation on both units is pretty good, same with the ripple/noise...

    Now you may roll the dice and decide what you'll prefer....
    Last edited by Stefan Payne; 03-20-2016 at 10:53 PM.

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    Quote Originally Posted by Stefan Payne View Post

    Still why are you using two of these WT7518 on the RMi and HXi??
    I thought we already had this discussion a year ago. It needs two because one doesn't support enough OCP trip points.

    Shunts are at R102, R103, R104, R105, R106 and R107.
    Last edited by Jon Gerow; 03-20-2016 at 11:13 PM.

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    Quote Originally Posted by Stefan Payne View Post
    The buttom line is that the HXi is more expansive and more efficient.
    The RMi is a little less efficient and cheaper.
    And on some units you have more connectors on the HXi vs. the RMi - for example the 750W RMi vs. 750W HXi - the HXi has 2 more PCie connectors and AFAIR one peripherial connector.
    The RMi has caps in the cables and also the voltage sense pins used...
    Still, voltage regulation on both units is pretty good, same with the ripple/noise...
    Now you may roll the dice and decide what you'll prefer....
    Yes, i know these stuff, my question was about the structure of the platform, since i don't have a clue to compare such things!!
    Check the 2 platforms (HXi750 & RMi750) :
    http://www.techpowerup.com/reviews/C.../HX750i/4.html
    http://www.tomshardware.com/reviews/...ly,4223-3.html
    There are construnctional differences (example: 2X caps Vs 3X caps at Transient Filter, or NTC Thermistor & Relay Vs NTC Thermistor at Inrush Current Protection )
    That's why i asked if: "is HXi a step above, or a step below RMi after all? (*efficiency excluded)?"
    I can compare stats, what i can't do is to compare the safety of the platform and the solidness of the platform.
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