Hey guys, my desktop started making weird whistling noises and the OS kept restarting at the windows page. Issues seemed to be a crapped out power supply and blown out capacitors on the motherboard. Because of this, I will need to replace some old hardware. This was my build from 2009. The computer will be used for gaming and for film editing. Overclocking is not necessary at this point.
For gaming I would definitely go with the 4670k. I'm not as familiar with the Xeon but have nothing bad to say. Your gpu should work fine as pci-e 3.0 slots are backwards compatible with 2.0 gpus.
I researched the xeon and these are different cpus that net similar performance levels. With the xeon you get hyperthreading ability which for gaming is "meh" getting better but not really all that helpful for the most part (yet). With the i5 you get the oc ability which can put the stock numbers over the top of the xeon. However, when it comes to oc'ing there are no guarantees. So, since you said you won't be oc'ing I can see why the xeon would be your better bet. If you want the ability to oc you then know what to do. Hope I'm not confusing you but that you actually find this useful. I'm sure you've researched much of this on your own to choose such components but I would lean towards the i5 4670k as you can get the most out of your system when you oc and keep longevity if you do it right. You learn more about that specific chip and your system and get the most reward. If oc'ing just isn't for you then the xeon is your winner and you won't be missing much. Have fun!
As I was updating this I agree with the poster below. If you can save elsewhere and upgrade your gpu, you will see the best immediate gains there. However, you may be planning on that already and want to get your base of your system ready for a good gpu down the line when that's your final expense?