<P> The cooling system of the 2 - in - 1 has been redesigned and dubbed hybrid liquid cooling system . It includes heat pipes with a flowing liquid, which is meant to avoid the use of the internal fan when the device is used for less demanding tasks such as web browsing . </P> <P> All Surface Pro 4 models feature 6th - generation Skylake Intel Core processors--m3, i5 or i7--which are more powerful and run cooler over its Intel Core Haswell predecessors found in the Surface Pro 3 and 2 . The maximum clock rate of the most powerful CPU option (i7 - 6650U) is also greater at 2.2 GHz, with up to 3.4 GHz in the Turbo Boost mode . The m3 - powered model is completely fanless . </P> <P> RAM and SSD options available are 4, 8, 16 GB and 128, 256, 512, 1024 GB respectively; the top options are two times as capacious compared to top options of the Surface Pro 4's two recent predecessors . </P> <P> The common traits, inherited from the previous generation device, are a continuous kickstand, magnesium casing with a silver - colored back side, 802.11 a / b / g / n / ac Wi - Fi radio, Bluetooth 4.0 Low Energy, full - size USB 3.0 port, microSD card reader, headset jack, Mini DisplayPort, Cover Port, and a renamed SurfaceConnect, a port on the side to connect a wall charger, Docking Station or Surface Dock accessories . </P>

What type of ram is in the surface pro 4