Complex sentence: Having an Adreno 200 GPU, and a lower processor with a lower screen resolution, the Galaxy Ace cannot run high-definition games; however, third-party developers can port some games to work on the Galaxy Ace.
Split into simpler sentences: Having an Adreno 200 GPU, and a lower processor with a lower screen resolution, the Galaxy Ace can't run high-definition games. But, third-party developers can port some games to work on the Galaxy Ace.