I am trying to build a custom PC, i have found a processor but i am unsure whether it will be good for 40FPS on minecraft on the laggiest options, i am planning to record so 50FPS at highest settings would be good, I have a 'Nvidia Geforce GTX 650 1Gb' Graphics card, please help me and give me a straight up answer as to if it is good enough for my requirements, or if not, what is a good processor?
You are good.
A i3-3220 is about as good as it gets for a dual core cpu. It way exceeds the optimal requirements for minecraft.
And very few other games use more than 2 cores.
Your GTX650 also way exceeds optimal minecraft requirements.
Check out experiences here:http://www.minecraftwiki.net/wiki/Hardware_performance