[dogma1138]

Intel early centrinos are not 64bit (Dothan / Banias) so are the initial Core / Core Duo CPUs (Yona).

Intel didn't release a mobile 64bit CPU until 2006/7 with Core 2 Duo.

Also the initial implementations of Intel64/EMT64 lack certain functions so even tho they technically support 64bit they might lack certain other features that are required by modern operating systems.

So overall if you have a 10 year old laptop you might not be able to use Tails 3.0.

[boondaburrah]

not even. If you have a netbook from 2009 the ubiquitous Intel Atom N270 that powered all of those was a single-core 32-bit CPU.

[dogma1138]

I forgot about the Atoms completely, are they even 64bit now?

[Sir_Substance]

My thought as well. Those things are everywhere like rats.