HP Pavilion dv4-2140us Entertainment Notebook PC. VISION Technology Premium from AMD with AMD Turion II Dual-Core Mobile Processor M520; 2.30GHz; 1MB L2 Cache; Up to 3.6 GT/s system bus running at AC/DC mode 35 watt; 4GB DDR2 System Memory (2 DIMM) Max supported = 8192MB; 2 Accessible Memory Slots; Genuine Windows 7 Home Premium 64-bit; ATI Mobility Radeon HD 4200 Graphics with 128MB Display Cache Memory with up to 1918MB total graphics memory; 320GB (7200RPM) Hard Drive (SATA); HP Imprint with the expresso design in high-gloss black & HP Webcam with integrated digital microphone; Bluetooth; 14.1" Diagonal WXGA HD HP BrightView Widescreen Display (1280 x 800).