Overall pressure ratio
Examples

Engine
Overall pressure ratio
Major applications
General Electric GE9X
60:1
777X
Rolls-Royce Trent XWB
52:1
A350 XWB
General Electric GE90
42:1
777
General Electric CF6
30.5:1
747, 767, A300, MD-11, C-5
General Electric F110
30:1
F-14, F-15, F-16
Pratt & Whitney TF30
20:1
F-14, F-111
Rolls-Royce/Snecma Olympus 593
15.5:1/80:1 Supersonic.
Concorde

Question: How is General Electric F110 better than the Pratt & Whitney TF30?
Answer: The Pratt & Whitney TF30 had a pressure ratio of about 20:1, and the General Electric F110 has improved this to about 30:1.