Lenovo Idea Centre K430 31098JG Tower Desktop PC Core i 7 (3770) 3.4 G Hz 12GB (3x 4GB) 4TB (2x 2TB) DVD±RW WLAN Windows 8 64-bit (n Vidia Ge Force GT630) Lenovo Idea Centre K430 Tower Desktop PCIntel Core i 7 (3770) 3.4 G Hz Quad Core Processor with 8MB L3 Cache 12GB (3x 4GB) 1600 M Hz DDR3 memory 4TB (2x 2TB) 7200RPM SATA Hard Drive DVD Recordable (Dual Layer) Microsoft Windows 8 (64-bit)NVIDIA Ge Force GT 630 graphics 802.11b/g/n Wi-Fi