Possible base for a budget gaming PC. Cashback (with Lenovo) is £75 until the end of December. Links in first post.
Good points:- Intel Core i5-4430S Quad Core 2.7GHz; case is (just) big enough to take a better PSU and GPU; includes (Pro) OS
Not-so-good:- 180W (or 280W) PSU; unknown (hence probably carp) motherboard.