HP Pavilion All-in-One MS228nl Desktop PC, Pavilion. Display diagonal: 46.99 cm (18.5"), Display resolution: 1366 x 768 pixels. Processor frequency: 1.6 GHz, Processor model: 250U, Processor cache: 2 MB. Internal memory: 4 GB, Maximum internal memory: 4 GB, Internal memory type: DDR2-SDRAM. Total storage capacity: 500 GB, Hard drive speed: 7200 RPM, Compatible memory cards: MMC, MS Pro, SD, SDHC, xD. Discrete graphics adapter model: AMD Radeon HD 3200