According to Toms Hardware the
Phenom II X3 is faster than the Core 2 Duo and the Cor i7 with a single GPU configuration. Notice the X3 isnt even OC'd there. Those numbers are done with a GTX280 I believe.
I am also incredulous about it. However, TH released a second article proving their results. AM3 + Phenom II are stronger in real world scenarios.
"If this is still a graphical bottleneck for the GeForce GTX 280, then our conclusion from the AM3 launch holds true, and the Phenom II really is faster in real-world gaming scenarios." link
I have a hard time recommending an AMD rig, specially after my horrible experience with the original Phenom. However, those numbers seem to indicate AMD turned around big time. In any case, the Core 2 Duo is also an excellent choice, and is cheaper than the AM3 + Ph2 combo.
Anbother quote, and the one that convinced me of building and X3 rig for my brother:
"The X3 720 Black Edition looks to be a great enthusiast CPU for those on a budget that are looking for some very solid performance in the gaming arena. Match it up with some inexpensive DDR3-1333, which should be fairly easy to do since AMDs internal memory controlling is not as restricting as Intels in terms of voltage, and you can have yourself a scorching 3.5GHz barebones gaming system easily around $400 sans the video card. " This one by the AMD haters themselves,
[H] .
Apparently there is a way to get the DDr3+CPU+AM3 mobo combo for $400, but I haven't read the article that much.
Also, what do you mean by 22nm all the way? I am lost there.