Intel Core i5-2400S @ 2.50GHz Quad Core 8GB DDR3 - 500 GB 09/30/2011
intel Core i5-4590 @ 3.30GHz Quad Core 8 GB DDR3 - 500 GB 3/16
Intel Core i5-4570 @ 3.20GHz Quad Core 8GB DDR3 - 500GB HDD 10/13
Intel Core i5-3470 @ 3.20GHz Quad Core 8GB DDR3 - 500GB HDD 4/2013
Intel Core i5-4570 @3.20 GHz Quad Core 8 GB DDR3 - 500 GB HDD - 12/14
Intel Core i5-4590 @ 3.30GHz Quad Core 8GB DDR3 - 500GB (Win 10) 7/15
Intel Core i5-4590S @ 3.00GHz Quad Core 8GB DDR3 - 500GB 4/2015
Intel Core i5-4570T @ 2.90GHz Dual Core 8GB DDR3 - 500GB HDD 6/15
Intel Core i5-4590T @ 2.00GHz Quad Core 8 GB DDR3 - 500 GB HDD 12/14
Intel Core i5-4590 CPU @ 3.30GHz Quad Core 8GB- DDR3 - 500GB HDD (Win 10)
Intel Core i5-4570 CPU @ 3.20GHz Quad Core 8GB- DDR3 - 500GB HDD (Win 10)
Intel Core i5-2500 @ 3.30 GHz Quad Core 8GB DDR3 - 500 GB (Win 10)