Lenovo B520 77452EU Touchscreen All-In-One 23-Inch Desktop (Black) (Discontinued by Manufacturer) Intel Core i7 - 2600 Processor, 3.4 GHz, 4 cores, 8 threads, 8mb of cache Touchscreen 23" Full HD (1920x1080 widescreen), LED backlight, 300 nits, 16:9 aspect ratio, 1000:1 contrast ratio 6GB DDR3 Memory, 1 TB 7200 RPM Hard Drive NVIDIA GeForce GT 555M Graphics with 1GB video memory HDMI in/out for connecting to other high-definition devices