people come down very hard on the pi.
here are my times for building the pi kernel. i rebuilt it a few times to push data into any caches available. pi3+ with a high-ish spec sd card: 23 secs dual intel atom 1.8Ghz with an SSD: 9 secs the pi is slower, but not 10 times slower. However it does cost a 10th of the price and consumes a 10th of the electricity. i use the order of magnitude test as that is (in my experience) what you need to make a really noticeable difference (to stuff in general). i use one daily as a plan9 terminal, for which i feel its ideal. -Steve