Honestly follow your heart. What I mean by that is this is a very crucial part for a pc gamer's life right now your either a intel fan boy or a amd fan boy. It's really up to you at this point I can tell you first hand experience that the amd 8350 is thee cpu for gaming regardless if it's getting old if your lucky you can perform that as if it's a amd 9590 which I can tell you, you will not have to upgrade at least two years if you can get it that high of course.(only if your expecting to play ultra settings for two years) I had mine at clock 4.8 ghz but beware that the higher you overclock the cpu the less you can on your graphic cards that's a promising statement so if your planning to hit those amd video cards hard think again and get maybe an intel.. The i7 4790k kicks ass!! It is a 25% - 30% increase (unless you don't overclock the 8350 to 4.7 - 5ghz) like WOW it's great bro if you can hit that amd 8350 to 4.7 ghz hit it bro!!! And keep it on the mean time
right now it's only 120$!! On amazon dude
I say get the amd 8350 than if you don't like it return it, and you have a 60 day returning policy with amazon LLC
but really follow your heart man
on tigerdirect they're selling the i7 4790k for 300$ no tax and free shipping personal I'll go for the amd 8350 if you don't like it just get the refund policy on amazon it's amazing take care man