Cooler fan (Subdivision ready 3D model) is available on CGTrader for $19. Original author: GuidoVrola. Specs: 5434 polys, 5491 verts.
OBJ (OBJ, filesize: 9.63 MB), FBX (Autodesk FBX, filesize: 4.88 MB), 3DS (3D Studio, filesize: 4.8 MB), BLEND (Blender, filesize: 5.05 MB)