I currently have this stock HP Pavilion p7 1205 (http://support.hp.com/us-en/product/HP-Pavilion-p7-Desktop-PC-series/5187022/model/5192583/document/c03154964/) and I'm in the middle of changing out motherboards. When I took out the old motherboard's CPU fan, I saw that it had a backplate that's glued to the pre-installed motherboard. Now I need to find a compatible CPU fan that fits with in the Pavilion case and fits on my new motherboard, a Biostar H61MGV3(http://www.biostar.com.tw/app/en/mb/introduction.php?S_ID=638). The new motherboard is a little bit smaller than my old one so I'm not sure if a Cooler Master Hyper 212 Evo will be able to fit either the mobo or case. This is my first time changing out computer components and the motherboard. I just need something that can fit and work relatively well for my moderate gaming life.