... 15.6" notebook INTEL i5-3317U 4G/500G laptop computer with DVD-Rw drive HDMI wifi 16:9 ... Atom D2500 Dual-core 1.86GHz,4 Channel ,1GB RAM,160GB HDD;Graphics: Intel GMA 3600 VGA 640MHz .2 ... Dual-core 1.7-2.6GHz,4 Channel,4GB RAM,320HDD; Graphics: Intel GMA HD4000, 640MHz.Detail Description ... core 1.7-2.6 GHz ,4 channelOperate systemWIN7MemoryDDR3 Ram 4GBHDD2.5" SATA interface 320GB,up to 500GBSCREEM15. ...