So yes, check the Geekbench results for the UR1 and UR2 Sony Bravia Televisions (Mediatek MT5893):
Except the Nvidia X1, no other processor, currently in any certified Android TV device, from Broadcom, Realtek, Synaptics, Amlogic, Hisilicon or Mstar can reach 3000 in Multi-Core Score.
I thought that was interesting, knowing how sluggish previous Mediatek SoC were before.
It also seems like Mediatek is preparing an MT5895.
The Amlogic S922X is more powerful but isn't Android TV-certified yet.
Good, this was absolutely necessary.
Previously the Shield TV was the only adequately powered device for frequent and smooth 4K usage.
The Mi Box, Jetstream, and older Sony TVs were all underpowered if you actually intended to watch a lot of 4K content.
Even things like navigating through menus was visibly slower on those other devices than the Shield.
I'm glad that someone (other than Nvidia) is finally running Android TV on something other than the Amlogic S905X.