You are aware that you will (most likely) lose all those pretty amazing optimisations that you tend to rely on if you develop software that is a bit more “sophisticated” (e.g., parallel programming leveraging IPP etc.). Can’t wait to see how fast that translation layer will be for my FFTs that have been super optimised for Intel chips.

I wonder: when I observed 20+% performance loss for high compute intensive scientific tasks Intel vs. AMD because I relied on IPP - how much performance loss will we see for the x86 to Arm?

For your average Text application you may not care about performance loss. But I bet you, that for video, image editing, science etc. you are easily 20+% worse off than before.

So what exactly is the benefit for the customer or the developer community?

So I can play Angry birds on my Mac?