Lenovo H420 77521TU Desktop (Black) Intel Core i3 - 2100 Processor, 3.1 GHz, 2 cores, 4 threads, 3mb of cache Genuine Windows 7 Home Premium 64 bit Lenovo Enhanced Experience 2.0 for Windows 7 with Rapidboot technology - delivers faster start-up & shutdown and optimized multimedia Full HD Graphics Support with HDMI output,DVD/RW