it air cooling and cooled by CM hyper6
See my bench results
http://bbs.myit365.com/BBSUploadfile/2004-...-25-22-15-8.jpg
http://bbs.myit365.com/BBSUploadfile/2004-...-25-12-16-5.jpg
http://bbs.myit365.com/BBSUploadfile/2004-...-30-7-18-27.jpg
See my bench results
http://bbs.myit365.com/BBSUploadfile/2004-...-25-22-15-8.jpg
http://bbs.myit365.com/BBSUploadfile/2004-...-25-12-16-5.jpg
http://bbs.myit365.com/BBSUploadfile/2004-...-30-7-18-27.jpg