The rPi 4 is over 10x faster than the 1.
The original article points out that the raspberry pi 400, with the benchmark targeting 64 bits, was about 80x Cray for the same benchmark which was 4.5x for the rPi 1.
Raspberry Pi 5 advertises a 2-3x performance gain over earlier versions, though this wasn’t benchmarked in these tests.
As to ARM in general, here's a post about how ARM-1 compared to the 387: https://retrocomputing.stackexchange.com/questions/24826/did...
80486
I think the meaning of my comment was clear: the 80486 was the first Intel CPU guaranteed to have an FPU. I didn't say all the Intel CPUs which came afterward were guaranteed to have them...
Looking over some old info about the "i486" (I swear I had completely forgotten about the i) was a treat. It's only barely believable but I think the sheer annoyingness of Intel's marketing and market segmentation might have actually peaked three decades ago.