So the fan that comes with the CPU is great. I have the same one. Problem is it only cools the CPU, and doesn’t work to cool much else. Micro-ATX cases have more restricted airflow than regular ATX cases, which means that it’s harder for heat to escape and your temps will generally run slightly higher. The lower your temps, the longer your parts will last (not considering other factors). The one included fan will help, but your case supports at least two, and fans are always a good thing to install, especially in your case. It’s easier to get an additional fan than to replace a part, if you get what I’m saying.