Pls give me one that can play bf3 at least at medium around 30-40 fps AT LEAST but if it can on ultra something like that but I don't think that that is possible for 400 euros!! :D
Well from Amazon.fr(That's where I shop for my PC parts, even though I'm not from France) for about 405 Euros you can build something like this:
-Motherboard: Gigabyte GA-H61M-DS2
-CPU: Intel Pentium G860
-Graphics Card: Sapphire Radeon HD 7750
-RAM: 8GB Kingston HyperX
-PSU: Corsair CX500
-HDD: WesternDigital Caviar Blue 500GB
-Optical Drive: any DVD drive that's around 20-22 euros really
-Case: Xigmatek Asgard
This should be able to play BF3 on Medium settings no problem. Another suggestion: use an old Optical drive, Hard drive and get 4gigs of Ram to save up some money and buy a better GPU. You can also consider buying an Intel Pentium G850 and save up even more cash. Hope this helps.