"x86-based AMD 3.2Ghz quad-core chip, 8GB of RAM and 128GB solid-state drive storage. The Piston packs 12 USB ports and can support up to three monitors through mini-DP, HDMI and DisplayPort at up to 4K resolution."
It is modular, whatever that ultimately means (most PCs already are), somewhat small form factor and pitched towards SteamOS.
Cost runs 1000 USD (740 Euros or £620, who knows what will happen in Europe though).
Unless I am fitting out an office with basic needs I build my own PCs.
I've never bought a pre-built Desktop computer and I can't see why my approach would be any different towards HTPC. I can build an equivalent or superior box myself so I can't see why I'd bother with the rather pricey Piston.
Well, you can upgrade the Piston as well... naturally it's also infinitely worse than a home-made PC with wicked specs.
All I was saying was that the two devices are in completely different sectors of the industry, hence the rather large price gap. Comparing the Raspberry Pi to the Piston is like comparing the OUYA to the PS4 - they're both consoles, sure... they just have different intended uses.
Like Tom said, you can put together a machine of comparable specs for half the money, and while some people may find the (impressively small) form factor and the (impressively) low power consumption worth the extra $500, but it's just not that important to me. It's a nice piece of hardware but for my money, it's not worth the... money.