I have an ASUS K501E which has a Pentium T4400 in it. I also have a Intel Core 2 Duo T9400 CPU that I'd like to replace the Pentium CPU with. From the research I've done, I'm pretty sure that the T9400 is compatible with my machine, but then again, I'm no expert. Can anyone clarify this for me please. My laptop has an NVIDIA MCP79 chipset. The BIOS manufacturer is American Megatrends. BIOS date: 01/12/10. BIOS version: 207.