I am looking for a laptop that is around the £500 Mark (£550 the absolute limit) I have seen a lenovo z570 on pc world for £479 with an 2nd gen i5 and 4th of ram. On saveonlaptops.co.uk there are multiple options for it. Would it be worth dropping the CPU to an i3 and get a gt520m. Or get the i5 and gt520m (will it make much difference). The main uses will be web browsing, films and some light gaming when away from my pc. Likely games are civilisation 5 and age of mythology.