By Steve Lee posted Aug 31st 2010
I have been a long time advocate of the modular PSU, especially one that is exceptionally well built. If you are not familiar with the term modular power supply or modular PSU, it’s a feature allows you to attach and detach cables from the PSU.
The main benefit a modular power supply gives you, is the ability to customize PSU cabling by only plugging in the cables you need to use. This gives you the flexibility of going with a basic setup or an extreme setup, using the same PSU.
In a basic setup, let’s take a regular home system with two hard drives, a DVD-ROM drive, and a high-end PCI-E video card for example. Using a modular PSU, such as a Corsair HX850W, you technically only need 5 cables from the PSU: the ATX-24pin cable, the 8-pin EPS/12V CPU cable, a SATA cable with three connectors, and two PCI-E cables. You don’t need to worry about tucking away a spaghetti of unused molex, floppy and PCI-E cables that might hinder the air flow inside the case.
In an extreme case, let’s say you want to build a 24 SATA drive storage server and you don’t need to use any molex or floppy connectors. Of course, you will not find any PSU on the market with native support of 24 SATA connectors. But with a modular PSU, again taking a Corsair HX850W as an example, you can plug in 6 modular SATA cables with 4 connectors on each cable into the PSU.