Still don't understand HP's classifications:
AMD Athlon(TM) XP-M 2800+ (1.60 GHz)
The Mobile AMD Athlon (TM) XP-M 2800+ processor offers 1.6 GHz processor speed and 128KB of L2 cache. The XP processor series feature AMD's exclusive QuantiSpeed architecture for rapid execution of applications, and PowerNow! (TM) for extending the life of your battery for maximum mobility. AMD Athlon is a trademark of Advanced Micro Devices, Inc.
AMD Athlon(TM) XP-M 3000+ 1.60 GHz
The mobile AMD Athlon(TM) XP-M 3000+ processor provides a great combination of speed for your demanding business and multimedia applications, and extended battery life for increased mobility. This processor features AMD's unique PowerNow!(TM) technology and 256 KB of L2 cache. AMD Athlon is a trademark of Advanced Micro Devices, Inc.
AMD Athlon(TM) 64 3000+ 1.80 GHz
The AMD Athlon(TM) 64 processor provides outstanding performance for demanding applications with 1MB of L2 cache. Designed for optimized mobility, these processors incorporate AMD PowerNow!(TM) technology to extend system battery life while delivering performance-on-demand. AMD Athlon is a trademark of Advanced Micro Devices, Inc.
AMD Athlon(TM) 64 3200+ 2.00 GHz
The AMD Athlon(TM) 64 processors also feature HyperTransport(TM) technology to increase overall system performance and accelerate multimedia applications and presentations. This fast processor with 1 MB l2 cache delivers a balance of leading-edge performance and true mobility. AMD Athlon is a trademark of Advanced Micro Devices, Inc.
AMD Athlon(TM) 64 3400+ 2.20 GHz
The AMD Athlon(TM) 64 3400+ processor incorporates PowerNow! (TM) and HyperTransport (TM) technologies to assure outstanding performance for mobile computing, along with 3DNow! (TM) Professional technology to accelerate multimedia applications. This processor's lightening fast processing speed and 1 MB L2 cache make it ideal for productivity applications, entertainment, and gaming. AMD Athlon is a trademark of Advanced Micro Devices, Inc.