Lenovo ThinkCentre 10A7000QUS Desktop (Intel Core i7-4770, 8 GB DDR3, 1024 GB SATA, Windows 7 Pro64 DG Windows 8), Black Intel Core i7-4770 Processor(8M Cache, up to 3.90 GHz) 8GB DDR3, 1000GB 7200RPM Hard Drive Graphics Controller: NVIDIA Geforce GT 620 up to 1 GB Graphics Windows 7 Pro64 DG Windows 8 3-year, Onsite Warranty