Apple Watch 4 found to be just as fast as iPhone 6S, but only for certain metrics
A developer named Steven Troughton-Smith has built a demo app based on Metal, a real-time physics-based rendering solution. Troughton-Smith tested this new app (in which the device must display colored balls churning around in a round bingo-style spinner as they would in real life) on the newest version of the Apple Watch. He found that not only could the watch run the demo app, but it could do so at 60fps.
In fact, the Apple Watch 4's score in the test was reported to equal that of the iPhone 6S, This phone has a dual-core, 1.84GHz Apple A9 chip, whereas the watch has a dual-core S4 processor of unknown speed. The Apple 6S may have a much larger screen; however, both devices produce the same screen resolution (326ppi).
This test may indicate that the S4's architecture, known as SIP or silicon-in-package, is powerful enough to rival older Apple smartphones, albeit in very limited ways. On the other hand, Troughton-Smith also claimed that the S4 used no more than 64% of its processing power while running his demo app, which also compared well with the 2015 phone.
Therefore, the Apple Watch 4 may be uniquely capable, especially when its updated watchOS arrives later this year. On the other hand, those who still rock the 6S are not advised to throw their good old phones in the trash just yet; the Watch 4 is still just a wearable after all.