I would go for the FX-4300 if you could. I uses Piledriver architecture which is better than Bulldozer. If that puts you over budget too much, you could drop down to 7850 and overclock it to get comparable performance to the 7870.
Thanks for the help
No problem. I would have suggested a build but I am located in the US and pcpartpicker.com doesn't have a good selection for Euro pricing.