https://wccftech.com/ios-12-beta-vs-ios-11-4-geekbench-performance-test-on-iphone-x/

Here’s a Geekbench performance test between iOS 12 Beta and iOS 11.4 public release for iPhone X. See which one fares better.

I’ve been using iOS 12 Beta on my iPhone X for a few days and needless to say that Apple’s claims about performance are absolutely spot on. Keep in mind that iOS 12 is currently in beta which means things are only going to improve even more with time and what we see right now might not actually be up to Apple’s expectations, because ‘beta.’