There's a reason that the Xbox One and PlayStation 4 have dominated living rooms around the world where the PC has languished (relatively un-loved) in the corner. Gaming consoles are small, easy to understand, easy to control with their bundled wireless controller pads. But with the (slow, somewhat abortive) rise of the Steam Machine, we've seen a few genuinely impressive small gaming PCs rise above the noise to challenge Microsoft and Sony's stranglehold on the big-screen TV. One of those is the Alienware Alpha, the second hardware refresh of which is one of the best small-form-factor, high-performance PCs you can buy.