4GB of RAM
The Samsung Galaxy Note 4 is an extremely powerful smartphone but its processing power will likely pale in comparison to what the Galaxy Note 5 and its new features bring to the table.
Samsung's expected to use either a Exynos 7420 or a Exynos 7422 SoC inside of the Galaxy Note 5. The Exynos 7420 is the same octa-core processor that the company used inside of the Galaxy S6 and Galaxy S6 Edge.
What's really got us excited though is the fact that Galaxy Note 5 rumors all point to the inclusion of 4GB of RAM. If true, the Galaxy Note 5 would be one of the first phones to utilize 4GB of LP-DDR4 RAM. This addition should help to keep the Galaxy Note series on or near the top of the heap in terms of performance.
This kind of firepower means the device should be able to handle games, multitasking, and Android/TouchWiz with ease.