I wouldn't get too excited about it. It is still loaded with problems and blue screens. I downloaded the x64 bit version last night and installed it on my notebook and it took 3 hours to install on an AMD dual core X64 processor with 4 GB of ram. The video driver is not recognized. Downloading the most recent one from ATI blue screens the OS. So far, I'm not impressed at all.
i have installed Windows 7 a number of times now, and i have had no problems whatsoever. It takes 20 mins from start to finish, and i have never had a BSOD. i have nvidia GFX card, and the drivers are very stable (this time) This is the best OS that i have used personally, and recommend it highly. perhaps your issue is with ATI, and not windows.