I did some searches, but I was unable to find a list of which CPU models support VT-x and which do not. Where can I find such a list?
Try http://en.wikipedia.org/wiki/List_of_Intel_microprocessors for Intel (search for 'VT') and http://en.wikipedia.org/wiki/List_of_AMD_microprocessors for AMD (search for 'AMD-V').
This wiki page has a reasonably good sample of both AMD (V) and Intel (VT-x) processors.
For intels there's a really nice page:
Just go there and choose the "Intel Advanced Virtualization Technology" in the feature list. That is the second page after choosing the processor family.
Anyone knows a similiar site for AMD? I think it's a real lack of care that they don't have it easily available...