The HP ProBook 4520s is a small and medium business notebook that replaces the older 4510s from last year. The new model bumps the configuration from the older Intel Core 2 Duo family of processors to the newer Intel Core line, including the Core i3, i5 and i7 processors. In this review we look at what's changed and how the latest model stacks up against its predecessor. Our HP ProBook 4520s Specifications: Intel Core i5 430M Processor (2.26GHz, 3MB cache) Microsoft Windows 7 Professional (32-bit) 15.6-inch LED-backlit anti-glare HD display (1366 x 768) Intel GMA HD Integrated Graphics 4GB DDR2 800MHz RAM 320GB 7200RPM HDD LightScribe DVD+/-RW Optical Drive Atheros AR9285 BGN Wifi, Bluetooth 2.1, 1Gb LAN 6-Cell 47WHr Battery Limited 1-year standard parts and labor warranty Dimensions: 14.64 x 9.83 x 1.09-inches Weight: Starting at 5.27lbs Price as configured: $749 hp probook 4520s laptop hp probook 4520s laptop hp probook 4520s laptop battery