Got this in the post, earlier than the stated time. Was kept up to date on every step of the order, which was reassuring. That was fantastic, as I had a raid later that day and so I was able to play the same day after following instructions. The machine was easy to attach to my monitor, and it runs quick for my MMO - I can fight Sha of Anger in WoW with no lag, using an unclocked i5 core.
Am currently experiencing some graphical issues [mountain flickering in Skyrim, AA in WoW] potentially related to drivers - the customer support is informative and highly helpful, which is something you want when you invest in such a good PC.