I am sure this has been asked, but I would like to know is there any major difference between these two. I checked microsoft webpage and there is table that listed what Home doesn't have and what Ultimate has while other don't.

But in general, I would appreciate if anybody can point out specifically what would be the difference in terms of performance and gaming especially on notebooks (since it's notebookforums ?!)

Like for instance do Ultimate is the only with full dx10 features? Thank you in advance.

Check this out:

http://www.microsoft.com/windows/pro...ns/choose.mspx