Let's take a look at this 80 Plus Gold power supply from SilverStone, which has a full modular cabling system.

Here is a snippet: "The new SiverStone Strider Gold Evolution series of power supplies is comprised of 750 W, 850 W, 1,000 W, and 1,200 W models, all featuring the 80 Plus Gold certification, a removable air filter for the fan, and a full modular cabling system, meaning that even the main motherboard cable is detachable. Let's see if the 750 W model is a good option."



Link: HardwareSecrets