To cut it short, my friend's ancient computer finally blew up and he wants me to build him a new one for between £400-£450. It will be used mainly for gaming, and my question is, can you recommend some parts that are good performance, but low(ish) price. I have built my own computer, but it was more of a complete upgrade over a few years (I actually have rebuilt my old computer from the parts left over), but now I just don't know where to start, so any suggestions are welcome.