How to improve my mac mini performance I'am have a Mac Mini with 2.5GHz Intel Core i5. I'am a iOS developer, while doing development my mac mini becomes very slow and hand. 

How can I speed up my mac mini.

Thanks in advance
I am surprised the suggestions have not piled up in the hour since you posted...
1-Best answer: Put an SSD on the Mini, it will feel way better than even maxing out RAM (I assume you already have a decent amount of RAM to start with, i.e., not less than 8GB and are running Mavericks)
If you've already done all of the above then anything else you might do will probably give you less of a performance jump.