Help Is there a gaming pc for £500? If not what is the best £500 pc you can get?

Is there a gaming pc for £500? If not what is the best £500 pc you can get? I don't want to spend over 500£ and i can't really build my self so what is the best £500 pc it can be laptop/pc btw i found these but i want a £500 pc what can play > assassins creed Any of them, call of duty any of them mostly bo2, MINECRAFT is my top game i want a pc that won't lag on minecraft med to high settings on games i know £500 isn't alot but yeah i'm in uk so if you can find the best desktop for £500 it has to be uk site so here are the 2 pc's i found can you tell me what one is better the 1st link or 2nd link to play games here they are

http://www.pcworld.co.uk/...l#longDesc

2nd pc

http://www.pcworld.co.uk/...l#longDesc

scroll up for pc pic and that scroll down for the info of it what one is better 1st or 2nd to play games again i don't know how to build my own and it has to be 500 on the dot well maybe a bit over but. Mostly minecraft i play but the other games i like is cod and assassins creed i don't care if its assassins creed 1 and cod it can be cod mw2 to bo2 what fps will i get and what settings

Added (1). it don't matter what site its from ebay or where ever i just want to find a gaming pc or a very very fast pc for £500 yeah it don't have to be gaming it jst has to be really fast

http://www.palicomp.co.uk/gaming-pcs/amd-quad-bulldozer-gamer.html

try this one its 499.99