It had been nearly a year since I update (the page has been up for over 8 years), but my iOS Device Specification Grid page, created when I was doing TouchArcade full-time, with the purpose of being able to determine game performance on this vs that iOS device. It may be of interest / use to folks trying to determine a new device purchase plan, etc. At any rate,
Cheers.
bp
Blake's iOS Device Specification Grid
A listing of every Apple iOS, watchOS, tvOS device and their technical specifications.
blakespot.com
Cheers.
bp