All of them are AMD dual core, that's a rather slow CPU but in that price you won't get anything better I think.
You can run almost all programs that worked on Windows 7. New apps designed to run in Metro will run there. Everything else will most probably run in desktop. The annoyance is that in most cases you have to go from desktop to metro to launch the program and go back to desktop to work with it.
The worst things about Windows 8 are inconvenience and decreased productivity (everything takes more time and more clicks). You might try to install a hack that will bring back the start menu and disable metro and effectively have Windows 7 with some tweaks.
It might screw with some features or future updates though.
You can run almost all programs that worked on Windows 7. New apps designed to run in Metro will run there. Everything else will most probably run in desktop. The annoyance is that in most cases you have to go from desktop to metro to launch the program and go back to desktop to work with it.
The worst things about Windows 8 are inconvenience and decreased productivity (everything takes more time and more clicks). You might try to install a hack that will bring back the start menu and disable metro and effectively have Windows 7 with some tweaks.
It might screw with some features or future updates though.