Lenovo H520s-57-310171 All In One Desktop (3rd Generation Intel Core i3 3220- 4GB RAM- 500GB HDD- 18.5 Inches- Win8) vs (Renewed) Lenovo Ideacenter 520 F0D500BUIN 21.5-inch All-in-One Desktop (7th Gen Core-7020U/4GB/1TB/Windows 10 Home/Integrated Graphics), Black