i was wondering if i should replace my case fans with either noctua or another high cfm low rpm/db type fans. I have an i5-2500k @4.5 with an nhd-14 which was why i was considering noctua case fans so the tan/brn matches i figure even though the colors are uncommon the upgrades will look great in my case since it will have a clean modest look. Also would upgrading my 650d case fans provide any form of performance increase(e.g. lower in case temps).