Thought people might be interested (esp those looking at doing an upgrade/new build). Tested have done another PC build video: -

and if you 'Like' the video and post your current GPU & Hard Drive specs in the comments (either at tested or on youtube), then you're in with a chance to win the Corsair case, the PSU & a EVGA 780 GTX card. No harm no foul.

LLoyd Case did a write up on the entire build as well as performance benchmarks etc over at Tested: -

Given it's also principally a Gaming rig, might also be a good frame for a pure SteamOS build as well.