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

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


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    sith'ari (03-08-2016)

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    the step above RMi
    If you go by efficiency alone, I wager

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    Indeed, voltage regulation and ripple suppression isn't as good, because of the sense wires and cable caps.

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    I guess I can just paste those two messages of yours into the article and go grab a beer? Something like that HIGH QUALITY sticker on those Zalman GVM units?

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    Why are there two quad-channel OCP monitors (WT7518) in this unit, plus the WT7502 for usual stuff (OVP, UVP, PG, PWR On)? Usually the buck controllers monitor their own rails (+3.3, +5 and -12 V). And it only has single +12V rail, not 8.

    Is Corsair having universal boards (ready for some kind of German-version HXi / RMi / RMx with 8 rails) made by CWT and they mistakenly placed the wrong one here?

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    It's not a single rail PSU, only when you disable the OCPs with Corsair Link it's a single rail PSU.

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    Behemot (03-11-2016)

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    Both the unit and the box state single 62.5A rail. But you are right, there is something about some "multi-rail" on the website and in manual but with no further specification. I belive the single-rail behaviour should be set as default according to this spec. And I can now see three shunts burried down the modular board. But still, why 8 channels? Single quad-channel monitor will still be enough.

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    Quote Originally Posted by Behemot View Post
    Both the unit and the box state single 62.5A rail. But you are right, there is something about some "multi-rail" on the website and in manual but with no further specification. I belive the single-rail behaviour should be set as default according to this spec.
    No they should change the specificaties, but that won't sell because single rail is much more stable and better for your PC according to many people.
    And I can now see three shunts burried down the modular board. But still, why 8 channels? Single quad-channel monitor will still be enough.
    One for the 24 pins ATX connector, 5 for the 5 EPS/PEG modular connectors and guess that leaves two for the peripheral and sata modular connectors or one and one not used.

    It's the best way to implemented multi-rail OCP imo. Impossible to trip the OCP why it shouldn't happen with a trigger point of lets say 30A and when one modular connector is overloaded with for example a R9 295X2 or Titan Z the PSU shuts down safely.

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    Yeah, I think I've made it together…it is actually interestingly connected as series-parallel. Must have been fun to design such feedback. This one only has 7 active, one of the ATX 12 V/PCIe output connectors is not present (but all shunts are).

    If it's actually active as default, you are aware this is marketing scam What are the limits? It's not specified anywhere. I am afraid that if it is 30 A (even if 30 A precisely, not like usually 30 A + some headroom), it is useless anyway in this case so it just makes thing overly complicated.

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    It's changeable with Corsair Link but standard is 40A afaik. You sure the OCP isn't like I said, with one for all the peripheral and sata modular connectors, 5 for the EPS/PEG modular connectors and one for the 24 pins connector.

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