I loaded it onto my dad's pc. A old western 2ghz single core, 1gb ram and 20g ide hdd.
I won't say it was fast, but it ran Better then xp (Abliet a pretty old Install) - but it was very Smooth.
On top of that, my 60+ yr old parents both use it, and have no issues with the interface at all. It's great for non-pc people.