While "Steam Machines" are delayed, Alienware will still launch their console form-factor PC. The $550 price tag includes a black Xbox 360 wireless controller (with receiver) and Windows 8.1 64-bit. Alienware has also designed their own "Console-mode UI" for Windows 8.1, which can be navigated directly with a controller. It will ship Holiday 2014.
Apparently PC-based consoles equate to dubstep and parkour.
About the "Console-mode UI", it will apparently be what the user sees when the Alpha boots. The user can then select between Steam Big Picture, media, and programs. They also allow users to boot into the standard Windows 8.1 interface.
As for its specifications:
|Base Model ($550)||Upgrade Options|
|Processor||Haswell-based Intel Core i3||Core i5, Core i7 (user accessible)|
|GPU||"Custom" Maxwell-based, 2GB GDDR5
(see next paragraph)
|(none) (not user accessible, soldered on)|
|System Memory||4GB at 1600 MHz||8GB (user accessible)|
|HDD||500GB SATA3||1TB or 2TB (user accessible)|
|Wireless||Dual-band 802.11ac||(user accessible)|
The GPU is not specified, or even given a similar part to refer to. PC World claims that it will be comparable to the performance found on the two next-gen consoles. Since the 750 Ti has around 1.3 TeraFLOPs of performance, this GPU is probably near that, or slightly above it. PC Gamer says that it will be based on mobile Maxwell, so it might be similar to an current or upcoming laptop GPU.
One thing that has not been addressed is the HDMI-in port. We know that it supports passthrough for low latency, but we do not know what it will do with the input video. Alienware has several of these set up at their booth on the show floor, so we might hear more soon. While its specifications are a bit on the light side, particularly on the default amount of RAM (although that is easily and cheaply upgraded), its $550 price, which includes a wireless controller and its adapter, is also pretty good.