Most important differences with the Intel Pentium G4400
Speed: 3300MHz for the G4400 and 3500MHz for the G4500
Except for the speed both CPUs are identical.
The Intel Pentium G4400 comes with the HD 510 graphics and the The Intel Pentium G4500 has the HD 530. The Intel HD 510 Graphics (Turbo) is clocked @1GHZ, while the HD 530 (Turbo) is clocked @1050MHz The HD 510 has 10 execution units (EU) enabled, while the HD 530 has 23 execution units (EU) enabled.