update on best kn/s/$ and kn/s/W :
IRULU Nuvision tablet running asmfish popcount Linux,
1500kn/s on the opening position, 5W, $45 at ebay
1GB RAM, 3000mah,8GB memory
Android 5.0 , 7'' screen
Intel Z3735G CPU at 1.33-1.83 GHz
taking 4 threads worked well
for me so far. 512M hash
screen timeout disabled
1500kn/s at the opening position
in analysis mode, multipv=1
and before transferring files,
before the droidfish directory shows,
I had to close some buttons,
switch it on and off several times.
connecting the tablet with the PC, window opens,
goto the droidfish/uci window
open another explorer on the pc,
select the source directory on the PC
drag the asmfish executable with the
mouse to the droidfish/uci directory
the default stockfish 2016-08-28
that comes with droidfish 1.62
(
http://bit.ly/2dlDJeh )
only gets to 660kn/s
============================
etwa dasselbe Resultat mit dem Tolino tab 8
(ebenfalls intel Z3735)
~90Euro in 2015, nicht mehr erhaeltlich