When I was purchesed it from lenovo store I had little small doubt about thik.But the doubt is clear day by day when I am useing it.my note book specifiaction its 8gb ram 1tb hdd windos 8.1 pre installed and the desinge is verry good thin light weight and the speed is very good.led display usb 3.o blutooth v4.0.with out any fear go for it.no troubel after 3 years.i love it.