Sperry Univac 90/80 in No Way Out (1987)
The 80/90 system is in the Pentagon's computer room and is set to work enhancing a photograph that will incriminate Tom. Meanwhile, Tom uses the machine to hunt for evidence of Brice's affair with Susan.
This system seems a bit old-hat for a 1980s Pentagon computer room.
The Sperry 90/80 was in no way connected to IBM
I may have misread the Wikipedia article - I'll check.