Despite entering the game pulling up the rear of the Atlantic Coast Conference, the Yellow Jackets (9-10, 2-6) had won two straight against the Seminoles, including last year's postseason conference tournament.
Devion Smith's layup gave Georgia Tech a 50-37 lead with 17:08 left before the Seminoles began whittling away. John Butler's 3-pointer nine minutes later reduced FSU's deficit to 57-53 but it never got closer.
Usher buried a 3 with 2:05 to go for a 71-60 lead to seal it. Michael Devoe scored 15 points, reserve Dallan Coleman 14 and Kyle Sturdivant 12 for Tech.
The Yellow Jackets were 8-for-19 shooting from 3-point range in the first half and led 44-33 at the break. Georgia Tech also went to the foul line 16 times and converted 10 while the Seminoles went 3 for 4.
Georgia Tech's defense proved problematic for the Seminoles as it came away with 10 steals in the first half, which led to 12 points. FSU turned it over 12 times alone before the break.
Butler threw down a dunk to give the Seminoles a 26-25 lead with 6:05 before halftime. From there, Georgia Tech got hot and closed the half outscoring the Seminoles 19-7.
Anthony Polite scored 11 and Naheem McLeod 10 for Florida State, which saw its six-game win streak end.
Florida State (13-6, 6-3 ACC) hosts Virginia Tech on Saturday while Georgia Tech hosts Miami on Saturday.
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