Yeah, AMD had a leg to stand on in the Desktop market until Core came out when it came to sheer performance, but AMD never really cracked power management/efficiency. There were a few mobile Athlon laptops, and they were probably superior in some areas to the truely awful Netburst P4m models, but unless you really needed maximum plugged-in performance from a brick of a machine intel's mobile Pentium III chips were a better bet.