Is the intel stock fan used for g2030 enough for i5 2500?

Solution
It is going to be a close call. Do you have both already? If so you can try it out and monitor temps. Run some wprime or prime95 while monitoring temps if you are staying under 70c then its fine. It is going to run hot as that cooler isn't rated for the TDP of the 2500.
It is going to be a close call. Do you have both already? If so you can try it out and monitor temps. Run some wprime or prime95 while monitoring temps if you are staying under 70c then its fine. It is going to run hot as that cooler isn't rated for the TDP of the 2500.
 
Solution
Almost double the TDP (55W vs. 95W) means that I wouldn't recommend trying it. Also, Intel's stock coolershave never been particularly good (though not horrible either), same goes for AMD's stock coolers in the pre-Wraith era.

Get something cheap if you budget is limited, a Cooler Master Hyper TX3 Evo isn't expensive.