A:Answer My 1800X is air-cooled. DELL sells a liquid-cooling option, but I didn't see it on Best Buys' site. For the record, even when I'm rendering 4K video, the CPU fan never gets THAT loud, and I barely ever hear it, even if I play games like World Of Tanks at maximum. The VIDEO CARD'S fan on the other hand... Quite noticeable under full load, so the CPU fan is easily drowned out by the video card's fan. (Sorry, I don't play any AAA class games to report on how loud they make my 5675 get.)