One of the most impressive inventions that can definitely replace your laptop. It is the 4th generation of the surface series 2 in 1 detachable devices that been released in 2015. This edition is in the same size as the Surface Pro 3 but thinner and the display is slightly bigger. The screen resolution is greater 2736x1824 PPI, with the same aspect ratio (3:2) and 10-point multi-touch. The surface pro 4 is featuring the 6th generation Intel Skylake low-voltage dual-core CPUs: m3-6Y30 900 MHz up to 2.2 GHz, 4 MB cache, 4.5 W i5-6300U 2.4 up to 3.0 GHz, 3 MB cache, 15 W i7-6650U 2.2 up to 3.4 GHz, 4 MB cache, 15 W For cooling, no fan is used, it is replaced by a hybrid liquid cooling system . It includes heat pipes with a flowing liquid, The Graphical Processing Units (GPU) associated with the Surface Pro 4 CPUs are as follows: m3: Intel HD graphics 515 i5: Intel HD graphics 520 i7: Intel Iris 540 graphics And the RAM capacities for di