Due to the changes of the career, I invested on Dell Vostro 5459, after a long survey. I chose it because it is compatible to Linux. The compatibility to Linux meaning that, all the hardware devices are accessible by Linux. Besides that, it has the NVIDIA graphic card, which allows me to use GPGPU to do my research and study. Moreover, I can play high quality 3D graphics games.

Ubuntu

So, the laptop I bought was pre-installed with Ubuntu. And, I was impressed by the Ubuntu first boot video, which can be found here.