Upgrade my CPU or no?

subduck9

Honorable
Aug 16, 2012
68
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10,640
With all the games coming out this fall (such as Battlefield 4) I'm wondering if my i5 2500k will be enough? I currently run Battlefield 3 pretty good, but I also play Planetside 2 and that doesn't run as pretty/smoothly.

My current specs: i5 2500k
Z68 Ext3 gen3
8gb 1600
XFX 7870
600w psu

Should I stick with what I got? Or get an i7 3770k? I've heard i7's aren't really an improvement over the i5's for gaming. Is that true?