I cannot see those commands not working on an AMD processor. AMDs and Intels are both x86 based architectures and Linux fully supports them both. I believe there was at one time some problems using the onboard cache with K6 processors, but newer processors should have no trouble with it.

I do not use AMD's so I cannot know for certain. However, I know several people running the same stock kernel I am on AMDs and they have no problems with it. Those commands should work fine.

See The Linux Hardware Compatibility HOWTO

Somebody correct me if I am wrong.