... 1.8GHz, Dual core; Chipset Intel NM70; Intel HD Graphic Card Integrated, 2GB RAM; 320GB HDD B. CPU: Intel i3 3240 3.1GHz, Dual core; MB: H61 ... ; 4GB RAM; 320GB HDD C. CPU: Intel i5 3570 3.3GHz, Dual core; MB: B75 ... ; 8GB RAM; 500GB HDD; Interface: USB2.0x6, USB3.0 RJ45x1 (100/1000MB network card) D. CPU: Intel i7 ...