To play multi-client smoothly, it is best to get delicated graphic card. The rest of the specs like I5, 8 ram or 500gb is enough to let you play with PW quite smoothly with medium setting unless you get high-end graphics like 650M series. I'm not sure about UK pricing on laptops, if it is more than your budget, you might consider AMD laptops as most of them built with decent delicated graphics.
im so sorry.. not trying to be dbag here or anything.. but where you said "delicated graphics card" i think you you meant to say was.. Dedicated graphics card
happy hunting
