The half-mold is the native motherboard line (24PIN) and the CPU power cable (4+4pin), also may have the video card (6PIN or 6+2pin) and the hard disk power supply line, the rest is only left the interface, to a root cuttings, do not need to plug in.
Full touch is no native line, only the interface on the power supply.
The half-mold provides the necessary native lines and other on-demand use. Full-mode connection motherboard and CPU lines are not, have not seen which machine does not need these two lines, the whole touch is to take off the pants fart. Play full touch is paranoid to even the native motherboard line and CPU line are not pleasing to the eye, to be re-customized people. If you are not going to re-customize the motherboard and CPU lines, there is no need to play the full touch.
In addition, the full touch of the motherboard line and CPU line is plugged in not welded, the contact resistance increases, reliability and efficiency are reduced.
Full-module and half-module power supply