Been really busy at work and with family, so haven't really had a chance to dig in and get some results. I have the top tier, the i7 model. Some impressions:
Launched Borderlands 2. Maxed out settings. Don't know what framerate is, but I have never seen graphics this smooth before. In my life. I am used to underpowered PCs, a few Macs, and an Xbox 360. Graphics are super sharp, detailed, and fluid.
Tomb Raider. Maxed out, ultimate settings, TressFX. Ran benchmark. got 52 FPS. Didn't really like the way the hair looked, turned TressFX off. 60FPS. Incredible.
Skyrim looks amazing, no pop-in, super fluid, shadows are realistic, still no mods installed.
At this point I am super happy with my purchase. I will mod up Skyrim and figure out how to get FPS on that, and Borderlands 2 (those two games are my favorites).
Also, looking forward to trying Bioshock Infinite, and getting a framecount on that.
Probably not going to be able to dig into this thing until after Thanksgiving.
Happy Holidays, everyone.