I received my Dell XPS 8300 last week and yesterday I installed the E-MU PCIe card and software without any problems. I did not even have to update the driver, just used the installation disk.
The pc has: Intel Core i7-2600 processor(8MB Cache, 3.4GHz), 12GB DDR3 SDRAM at 1333MHZ, and Windows 7 Home Premium 64 bit.
Regards,
Todd