After trying it out, I was pleasantly surprised that my Dell XT2 (core2duo) can handle Amplitube.
Anyone seeking an affordable laptop might consider a used XT2 or XT3.
My only suggestion would be to use Windows 8. My XT2 touch doesn't work in W10. I believe it's the drivers.
Amplitube sounds so good and being able to use it on older touch laptops makes it even better.