For the PSU, I based it on guru3D review of the gtx 560Ti http://www.guru3d.com/article/geforce-gtx-560-ti-review/7 They recommend 500W, but you know, if you want to be safe... Then for the cpu fan, take it, less heat = better longevity plus it doesn't make that much noise (compared to the one you have in the retail box),…