When trying to make a PC silent, it's important to remember the power supply, as its fan can be deafening. Hiper's Type R 480W supply is silent and outputs enough power to cope with demanding systems.
Its silver case is attractive and the eight Molex power connectors are well designed, with finger grips on both sides to make plugging and unplugging devices very easy.
It has two Serial ATA connectors, one floppy and one 12V for the motherboard. All that's missing is PCI-E graphics, but you usually get a converter when you buy a new graphics card. Aside from this, it's a great silent choice.