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

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    ...because selecting too low of an OCP trip point is what got multi-rail PSU's out of favor with most people, remember?
    Careful what you wish for... You just might get it.

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    Quote Originally Posted by jonnyGURU View Post
    OCP isn't there to prevent people from putting 20 hard drives on a single cable or three graphics cards on a single cable. It's there for safety in the event of a short.
    So (repetita iuvant), when I read either on a box or in a review "short protection" along with "over current protection", that's always a (abusive?) duplication of the very same thing, right?
    Best, Luca

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    Not necessarily, because you can have short-circuit protection (SCP) via under-voltage protection (UVP) on the secondary and/or through UVP on the primary (the latter being more commonly known as OPP - over-power protection).

    This is because when a short-circuit forms, a large current flow will usually lead to a significant voltage drop. The only time this doesn't happen quickly or severely enough to trip UVP is when there's a short across multiple wires to a large mass of conductor (which has a high charge acceptance capacity).

    OCP has a much faster reaction time (an order of magnitude lower) than UVP on either end, and is usually able to react before any damage is done to the components or the PSU.
    Careful what you wish for... You just might get it.

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    Quote Originally Posted by McSteel View Post
    This is because when a short-circuit forms, a large current flow will usually lead to a significant voltage drop. The only time this doesn't happen quickly or severely enough to trip UVP is when there's a short across multiple wires to a large mass of conductor (which has a high charge acceptance capacity).

    OCP has a much faster reaction time (an order of magnitude lower) than UVP on either end, and is usually able to react before any damage is done to the components or the PSU.
    Then, Mac, to do (or to do better) what UVP is meant for?
    Best, Luca

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    If they have to strictly adhere to these specs, I guess lots of PSU wouldn't be compliant, none77.
    Best, Luca

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    I didn't say nothing

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    Quote Originally Posted by quest for silence View Post
    If they have to strictly adhere to these specs, I guess lots of PSU wouldn't be compliant, none77.
    I almost forgot why there were reviews, thanks for reminding me.

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    Quote Originally Posted by -The_Mask- View Post
    I almost forgot why there were reviews, thanks for reminding me.
    I'm not sure why you're thanking me, mate.
    Best, Luca

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    Quote Originally Posted by quest for silence View Post
    I'm not sure why you're thanking me, mate.
    I'm also very confused here, but not about Mask's thanks, but whose opinion is correct about how OCP works after all !!
    If the experts are devided, then what conclusion the rest of us, -non experts-, can reach?
    P.S. Since @Pavel gave an excellent score at Corsair RMx, then the title of this thread ( Corsair HX750i, the step above RMi @HWI ) is somewhat confusing.
    Is it the HXi a step above, or a step below RMi after all? (*efficiency excluded)?
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