It took 3 year for android game consoles to get to the point, where GPD XD is.
Its, I dare to say, stable point for quad core with mali gpu.
On the other hand, Tegra K1, is whole new level, and need better quality of build, check the Xiaomi mi pad.
So, I am not excited when i see JXD S192.
I see overheating and battery drain problems.