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Pro's & Cons of Modular and Non-Modular PSU.

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October 4, 2012 6:13:17 PM

What are the pro's and con's of Modular and Non-Modular power supplies?
October 4, 2012 6:28:51 PM

Modular = cables are detachable (except usually the main CPU power cords), all SATA, Molex, and PCI connectors are detachable from the main power supply, so you can attach only the ones you need. A non-modular power supply will be cheaper but all cables come attached and are non-removable, you will have to manage the cables you do not use inside of the case.
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October 4, 2012 6:52:07 PM

Aside from lower cost, non-modular also has the advantage of eliminating mechanical and problems and voltage drop in the extra intermediate connectors and wiring, which should make them slightly more efficient and reliable than an otherwise identical modular PSU.
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October 4, 2012 7:01:12 PM

InvalidError said:
Aside from lower cost, non-modular also has the advantage of eliminating mechanical and problems and voltage drop in the extra intermediate connectors and wiring, which should make them slightly more efficient and reliable than an otherwise identical modular PSU.

^+1 (kinda)
this is the biggest technical advantage of modular psu's - the less wire, the less resistance, the less resistance the more efficient
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October 4, 2012 7:13:37 PM

Best answer selected by keithmfr.
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October 4, 2012 7:35:39 PM

dingo07 said:
^+1 (kinda)
this is the biggest technical advantage of modular psu's - the less wire, the less resistance, the less resistance the more efficient

I think you read what I wrote backwards.

There is more wiring between the PSU's output caps and cable end-connectors in modular PSUs since you have to add the wiring and connectors between the main PCB, connector PCB, individual cables, additional solder joints, copper traces, etc. With non-modular, wires are soldered directly next to output caps. No intermediate wiring, connectors, solder, etc.

All else being equal, modular is a wire management and cosmetic thing. With many affordable case featuring MB-tray cable storage, permanently attached cables aren't as much of a cosmetic or management nightmare as they used to be.
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