Honestly, most of the guys posting on this thread don't know what they're talking about.
http://www.ebay.co.uk/itm/SUPER-FAS...puting_DesktopPCs&hash=item1c3858280f&afsrc=1
That computer has an AMD FX-6300 CPU, not nearly as fast as an intel i7 or even an i5.
http://www.ebay.co.uk/itm/Intel-I5-...t=UK_Computing_DesktopPCs&hash=item20d901b955
I'd honestly go with that one, the processor in the long run will be MUCH better than the FX-6300 in gaming and video rendering. But, I would suggest upgrading the Video Card and Power Supply if you wish to do any serious gaming.