Well my wife's CPU is running at 2.2Ghz...she's got a P6-2133w from Wal-Mart. We've got the specs of it here. I know it gives upgrade suggestions and the highest is the AMD A8-3850 (Liano) quad core. But I'm assuming that's an APU instead of just a CPU. Is there a CPU that could work that would be more powerful? She's using a GPU now instead of the integrated graphics.