HP Z 440 MT Intel Xeon E5-1620 v3 (3.5GHz, 10MB L3), 16GB (2 x 8GB) DDR4 SDRAM, 1TB 7200 rpm SATA, SuperMulti DVD±RW, 15-in-1, Windows 7 Professional 64 / Windows 8.1 Pro - See more at: http://it-supplier.co.uk/computers/desktops/hp-z-440-mt#sthash.xtBcKO2y.dpuf  #hp #z640 #performance