Anand Looks at the Athlon64 X2
I cannot *wait* to get my hands on an Athlon64 X2. Multicore is my bag, baby.
The Gaming performance page is here, keep in mind that the vast majority of games are currently single-threaded, and won't benefit directly from having two CPUs.
While there's no direct Gaming Performance With Outlook benchmark, these come pretty close to my ideal usage scenario.