Well, finally found out from a review that it has 22DB YS fans in it (well, review said to look at previous version's review to see what didn't change and only talked about what did change, fans were not mentioned in what changed so assuming the YS fans are correct). So with that in mind, I probably won't need to change them out cause they have a good CFM/DB rating and I am looking for low noise system (I'm now use to my laptop's noise level since my desktop died last April and I am just now rebuilding).