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Thread: Why you shouldn't use a well made 4 pin molex to (6+2)8pin pcie adaptors

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    Quote Originally Posted by Mezoxin View Post
    you are correct the way that OCP is configured in general wont protect against all scenarios

    but that specific failure was caused intentionally by using aftermarket adaptors and bypassed the safe design that made that pin draw more than 8 A and less than 40A in a sustained manner

    Bit like the person that puts a barrage of power strips on a single outlet; but it is still important that the single outlet is correctly fused and does not burn out.

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    I agree and wish such optimisations could be implemented in digital PSU's
    but when in comes to households CB you have different consequences there (that could cause a large fire and multiple fatalities) , and an easier / cheaper control is available as well
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    Would it not be enough to just have a self healing fuse (PTC resistor) behind each connector?

    https://en.wikipedia.org/wiki/Resettable_fuse
    "
    These devices are often used in computer power supplies, largely due to the PC 97 standard (which recommends a sealed PC that the user never has to open),
    "
    Attached Images Attached Images

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    Mezoxin (01-16-2020)

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    I think that's a great idea , or maybe in cable so it would be more specific ? is this doable ?
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    would it allow for transients though without affecting its output significantly ?
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    Yes, since it is heat based, and it takes time for the fuse to heat up.

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    Quote Originally Posted by ashiekh View Post
    Would it not be enough to just have a self healing fuse (PTC resistor) behind each connector?

    https://en.wikipedia.org/wiki/Resettable_fuse
    "
    These devices are often used in computer power supplies, largely due to the PC 97 standard (which recommends a sealed PC that the user never has to open),
    "
    Yeah great idea, SSD's and HDD's powering off if you write to important stuff to it.

    I don't think you should use a resettable fuse which will cut the power just to certain components, while the PC keeps running. You can just use more shuts for more over current protections, works a lot better.

    Corsair already uses OCP on almost all modular connectors with a 40A triggerpoint in the AXi, HXi, HX and RMi. Except the modular connectors for the 24 pins and molex/sata connectors which is combined to one. If they would change it to 20A for the 24 pins ATX and 10A for every modular sata/molex connector the problem would be solved.

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    Mezoxin (01-16-2020)

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    more OCP shuts sounds like the ideal solution
    What are the dangers if power is cut off from a single PC component while the rest is still running , letts say sata powered HDD what are the hardware damage it could cause ?
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    A burnt connector cuts power with associated hardware damage.. (the connector itself)

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    Mezoxin (01-17-2020)

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    Quote Originally Posted by Mezoxin View Post
    more OCP shuts sounds like the ideal solution
    What are the dangers if power is cut off from a single PC component while the rest is still running , letts say sata powered HDD what are the hardware damage it could cause ?
    Data loss and corruption is most likely.

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    Mezoxin (01-17-2020)

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