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Actually, that VT extension confirmation might or might NOT be true. The only 2 sources of information is either within the Apple OS itself, and Intel's own utility. Intel is known for making mistakes in their own CPU feature listings, and I have no idea where CPU-x is querying the hardware support from. It could be from the EFI BIOS, a register test, or maybe reading from something inside OSX. If you look carefully, CPU-Z also did not mention VT support in Windows 7. Of course, Intel also ship "specialized" hardware for Apple (that might or might not have the feature enabled for their needs).

Can someone boot a Ubuntu LiveCD on a 2GHz MacMini or MacBook and see if /proc/cpuinfo list vmx as a feature?

I hear what you're saying, but Parallels detects VT-x and that's good enough for me. It IS weird that on Intel's spec sheets there's no mention of VT-x, but as you say it may be that Apple made a good decision for once and had it enabled. I know with other manufacturers they can choose to omit support for VT-x in the BIOS even if the CPU supports it, so this seems to be the other way around.
 
I hear what you're saying, but Parallels detects VT-x and that's good enough for me. It IS weird that on Intel's spec sheets there's no mention of VT-x, but as you say it may be that Apple made a good decision for once and had it enabled. I know with other manufacturers they can choose to omit support for VT-x in the BIOS even if the CPU supports it, so this seems to be the other way around.

To be honest, its more likely that Intel simply leaves the feature in but doesn't mention it because its more of a hassle disabling those sections of the chip. I.e. its very similar to what nVidia used to do years ago with their GeForce / Quadro lines. The Quadros had extra extensions that were disabled on the GeForce, however all it took was a little hack and they'd all work again, the cores themselves were identical. Of course, it became such a popular thing to do that nVidia now physically limits the chips.

Besides, if Parallels detects it and uses it... then its kind of there.
 
See this thread at vmware where a vmware staffer mentions that Apple have confirmed to them that the "package" they are using for the 2.0GHz CPU does include VT-x.
 
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