Which PC is better for playing games such as: COD, Battlefield, Crysis, Minecraft, skyrim/ESO ect?

Hi, I have found 2 budget pc's to play video games on, I'm not rich so I don't afford a high end gtx 780 Intel I7 pc but I want to play on decent graphic settings Medium/high on new and games to come (such as watch dogs) in the future I have a budget of around £440 So if you find any better PC's for that budget then please inform me. I wouldn't mind attempting to build a PC but I need the build to be within the budget including the OS (If i get the CCL OWL I'll get it with win 8.1)

Links to PCs:

http://www.cclonline.com/product/142042/NoMfgCode/All-CCL-Desktops/CCL-Elite-Owl-III-Gaming-PC/CCL-EL-OWL3/

http://www.eclipsecomputers.com/product.aspx?code=SYE-GALA10R725

Guest

I would advise the eclipse one over the cclonline one because the ccl online contains a processor that hasn't been made for 4-5 years. Not saying its that old but it couldnt handle watch dogs atall.
If you want to get a budget gaming pc, the only thing you can do is build it yourself, that way you can get good quality parts and hunt down cheap prices for them, or even the best value for money parts, therefore you don't pay for labour.
For starters you need a case, you could probably pick one of these up from a charity shop or even from a mates old pc, strip it out and bobs your uncle, remember you're on a budget so asthetics has no say.
To save alot of money you will need to do a few hours research, thats a must. If you don't want to build one yourself then the second best thing is to buy local and haggle a good deal!
Hope this helps.

Dylan