Things are even more impressive on the GPU side, where the OpenGL version of the GFXBench test shows the A9X beating not just every previous iDevice, but every Intel GPU up to and including the Intel Iris Pro 5200 in the 15-inch MacBook Pro and the Intel HD 520 in the Surface Pro 4. Once we see Iris and Iris Pro chips from the Skylake family, Intel may be on top again, but those aren’t due out until early next year, and they only ship in the fastest of Apple’s products.
In the Onscreen tests, which render scenes at the screen’s native resolution rather than the standard 1080p of the Offscreen test, you can see that most (but not all) of that GPU performance increase is being dedicated to driving the higher-resolution screen. It’s still faster than the iPad Air 2 by a bit, but an A8X and an A9X rendering the same thing at their respective tablets’ native resolutions will look more-or-less the same. When Apple bumps the resolution of iDevices, it can sometimes take its GPUs a generation or so to really catch up (this was the case with the first-generation Retina iPad, the first Retina MacBook Pros, and the iPhone 6 Plus), but it looks like the A9X is more than up to the task of driving the iPad Pro’s screen smoothly.