opss didn't realize you needed the custom parts :3 but couldn't you just get a cheap mouse and keyboard bundle and get a better pc at first so you would have to upgrade sooner, just a suggestion.But including the custom parts that's as much your gonna get for that price.
Luke's build did not include peripherals. Both builds need to have 2 4gb sticks of ram in dual channel. I do think that you could get the peripherals for less than 140 though. Also, instead of the gigabyte motherboard, replace it with an asus m5a78-l. Rest looks solid
Oh yes before I forget. Should I save £20 and get a reference cooler version of the GTX 760? Noise is not a major issue but I have seen that a reference card loses performance? Is this true? Also in a Cooler Master Elite 120 would a reference design cooler be better?
Ok, I will get dual channel RAM. Also what makes the Asus board better? I have seen people get 4.5GHz overclocks with the Gigabyte board and it has all the features my friend will use.
A blower style cooler(e.g. reference nVidia, some HIs coolers) is usually optimal in small cases such as the CM Elite 120. The builds here won't work in an Elite 120, though.
As with performance loss due to the cooler, that's pretty much false for most nVidia solutions. Overclocking on a reference cooler will not get you as far as a third party cooler, yes, but at stock speeds the reference should perform just as well as other cards with third party coolers running at stock.