The "smaller" non FE 3080, with confirmed specs it´s the EVGA XC3: 285mm/2.2 Slot (45.1mm). And, if it fits wich I doubt, the fans will scream on the Sentry.
I had made that mistake on the past, changed the Cryorig C9 CU (with noctua fan) for the Noctua Nh-l9i, so much quiter system.
The 220W of...