Will just an i3-4370 do for gaming or do I need an i5?

Look if you're getting the 980 then you need to invest in all round better build and for that reason the i5 is better , price/performance nowadays nothing beats the i5.

With that being said the i3 will do it for gaming as for now however if you can't afford an i5+980 then get the i5+970 , that will stand the test of time.

I5+970 OC will beat i3+980 at stock.
 


I do not plan to OC at all and I have no budget, I can spend any amount that i wish but at the same time am ot gonna get an i7 when there's no point