Updated: We've had a bit more time to play with the Acer Predator 21 X at CES 2017 and have updated our impressions.We'd scoff if you told us about one of the Acer Predator 21 X's crazy features. A curved display? On a laptop? Twin GTX 1080 graphics cards?And, a tiny window through which you can peer in to see the processor's cooling fan spinning around?...