Battery life
Late 2013 has 1-2 more hours on integrated graphics (please confirm in the dedicated graphic. I was told that both have same battery time if on dedicated)
Heat issues
Late 2013 has more heat (please confirm)
Fan noise
Late 2013 has more fan noise (please confirm)
CPU power
Late 2013 2.6 > Early 2013 2.8 > Late 2013 2.3 > Early 2013 2.7
Graphic power
750m = 650m same
SSD speed
Late 2013 a clear winner
Please feel free to add comments and suggestions so I can update them. Hope to help potential buyers like me to decide to go for a new one or a refurb.
Late 2013 has 1-2 more hours on integrated graphics (please confirm in the dedicated graphic. I was told that both have same battery time if on dedicated)
Heat issues
Late 2013 has more heat (please confirm)
Fan noise
Late 2013 has more fan noise (please confirm)
CPU power
Late 2013 2.6 > Early 2013 2.8 > Late 2013 2.3 > Early 2013 2.7
Graphic power
750m = 650m same
SSD speed
Late 2013 a clear winner
Please feel free to add comments and suggestions so I can update them. Hope to help potential buyers like me to decide to go for a new one or a refurb.