Yes, C. You can also consider the i5 4690 (found it for 222 euro, 3.5 ghz/ 3.9 boost), a bit faster than the 6500 but older. Value-wise the i7 isn't as good and won't prolong the life of the CPU that much (games prefer higher clock speed).
Anyways, if you go for i5, the 6500 is a solid choice.