go for is the top ..... attention has put the right memory modules still RAM DDR3 1600 MT / s (PC3-12800) CL8 @ 1.5V ... it is very sensitive if not it does not want start !! otherwise it is ample with a good processor and an SSD like me 256MB very ample ultra fast CT256M550SSD1 Crucial M550 SSD internal Flash Drive 2.5 "256GB SATA III