8840u "smashes" 7840u? well thats interesting because i tested both and the difference is near zero! Have you got an explanation to your false article or are you just making random nonsense up as you go along? Have you actually tested both side by side? Any other article or even on youtube you will see they are near identical yet you written a complete load of rubbish here!
The GPD Win Max 2 gaming handheld sacrifices efficiency in the name of performance in a recent in-depth test, achieving marginally less battery life than its predecessor but performing better in games and synthetic benchmarks, largely due to improved high-speed RAM compatibility.