Assuming the comparison is between the HD4000 and HD5500 on the 5200U, the HD5500 offers a better GPU, though it's unclear which CPU model you're referencing beyond it being a third-generation chip.
Assuming the comparison is between the HD4000 and HD5500 on the 5200U, the HD5500 offers a better GPU, though it's unclear which CPU model you're referencing beyond it being a third-generation chip.