Are there any compatibility differences between intel and amd?

I mean are there any software or os that will run with intel chips but not with amd? For the average computer user, will there be any noticiable differences between using an amd chip and an intel chip (given that both chips are the same processor speed)

No, no differences except that AMD tends to be a little cheaper.

Nope, it's the same as far as compatibility goes.The Intel chips have more advanced internal architecture, so in really intense high-end applications like video encoding or complex 3D design programs like Maya they perform better, but they're also much more expensive than AMD chips, which offer slightly less performance at a much better price.