I just wanted to tell you about this project i backed : https://www.kickstarter.com/projects/udoo/udoo-x86-the-most-powerful-maker-board-ever
It’s a x86 64 bits quad core @2Ghz with 2Go ram (up to 2.56Ghz / 8Go ram if you buy the big model), seems definitely possible to run cores like yabause, reicast, mednafen, mame2014 (most games won’t launch on arm), the new n64 core (since the intel hd gpu is supposed to have vulkan support) at full speed on it.
Basically it’s an intel nuc but smaller with a better price/performance ratio.
I’ll probably tell you more about it when i’ll get it around december.