If the compactness of a computer is a determining factor for you and you feel the Mini-ITX still too big for your taste, this VIA Technologies latest announcement, is likely to interest you.
Motherboard VIA EPIA-P900 Pico-ITX.
Indeed, the manufacturer is very proud to announce first the Pico-ITX motherboard, responding to the sweet name of VIA EPIA-P900 Pico-ATX, incorporating a dual-core chip SoC (Socket on Die, like Nvidia’s Tegra 3) .
Remember, the Pico-ITX is a standard certainly not widespread, but of tiny dimensions (the motherboard on the picture measures 10 cm in length for only 7.2 cm wide).
For more details, it is a VIA EdenTM X2 chip, clocked at 1 GHz which is accompanied by VIA Made in VX900H graphics chipset, which would be capable, according to the manufacturer, to decode HD video when used in conjunction with ChromotionHD 2.0 engine.
It may be especially noted on the photo at the bottom a SATA connection, an Ethernet jack, two USB, probably of USB 2.0 and a VGA. However, we can assume that the VGA is not the only one available, and if so, we could be in the presence of a serious candidate for a HTPC setup, subject to the power delivered by the SoC .