completelyrandomname :
Why would you get him an old gen i3 when the newer one is a couple dollars more if not the same. Again, why get such a bad PSU, if it blows up which it might because the quality is so bad, then the whole system you be fried. Again I keep recommending this PSU but it's the best you can get at the price. Grab a Corsair CX 500 v2 PSU, WAY better reliability and outputs more wattage due to the higher amps.
It's a 400£ computer yes you can make a better one but you will go over 400£.
Show me a 400£ with a core i5 please.
The reason behind getting a sandy core i3 is again the prices of H61 MOBO to stay on the budget.
go over the budget to get an ivy that's 10% more performance on benhcmark? what for? he won't ever see the difference, but the pocket will.
i build for the money he wants to spend 400£, can you do better for 400£? i'll be glad to see it, maybe i learn something, but don't tell me more expensive stuff is better, that i already know.