Processor: (speed, L2 cache, FSB) Intel Core i3-370M, 2.4 GHz, 2 cores, 4 threads, 3 MB L3 cache. Preloaded operating system: Windows 7 Home Premium 64 bit. Display/resolution: 21.5" WUXGA (1920x1080) TFT color, VibrantView (glossy), CCFL backlight, 250 nits, 16:9 aspect ratio, 1000:1 contrast ratio, frameless screen. Video graphics: Integrated. Serial ATA hard drive: 500 GB, 5400 RPM. Memory: 4 GB PC3-8500 1066 MHz DDR3, non parity, dual channel capable, two 204 pin SO DIMM sockets Maximum memory: 4GB DDR3. Optical drive: External ODD in box.