Further pitting itself against Intel"s Pentium M offerings, Advanced Micro Devices this week expanded its lineup of mobile Athlon 64-bit processors. The new Mobile AMD Athlon 64 processor 3000+ operates at 2 GHz and is meant for use in thin-and-light notebook computers. It is the highest performing processor in AMD"s family of low-power Mobile AMD Athlon 64 products, which already includes 2700+ and 2800+ versions, according to the AMD Web site.