Single radiator? NZXT Kraken X41
https://pcpartpicker.com/product/3VrG3C/nzxt-cpu-cooler-rlkrx4101
But it's a 140mm size, if your case supports it.
The NZXT Kraken X31 is 120mms:
https://pcpartpicker.com/product/p3fp99/nzxt-cpu-cooler-rlkrx3101
Only run about 1c hotter than the 41.
Air Coolers aren't really much better, they're kind of equal.
The Noctua NH-D15 is one of the best air coolers, and it's only about 2C cooler than the X31 (and about .5C cooler than the X41), it is the the most quiet though, at about 35DB (equivalent to: Quiet rural area.) whereas the X31 gets up to 52DB (equivalent to: Quiet suburb, conversation at home.)
https://pcpartpicker.com/product/4vzv6h/noctua-cpu-cooler-nhd15