I have a 2013 Kindle Tablet which has been fantastic. Sadly the screen is flickering and faithful may soon need to be replaced.
There is a later model which has higher specs.
Last year I bought a Samsung 8.4 S and to be fair I've been pretty disappointed with it's performance. On games like Hay Day and Clash of Clans it's not really coping, to the point I don't use it. Comparatively the S6 Edge and Galaxy Note 5 easily cope.
The new Kindle has a Snapdragon 805 Processor and Adreno Blaze 420 GPU, and the Samsung a Octacore 5420 @ 1.9ghz and an ARM Maili T628 MP6 GPU.
I can't really find a good comparison.
I am looking for a lightweight Android Tablet that will be excellent for games.