I have delidded my 3770K and i have used Thermal Grizzly (metal thermal paste) so i needed a cooler with copper plate. I have used Arctic Freezer and it is perfect. Same OC performance at 4.8ghz and temps dropped from 85 to 65 at max load. It worked perfectly for me. I plan on delidding my 8700k and i will use this same cooler. People complaining about loudness should do better job with thermal paste.