The biggest priority with small computers like this is thermal throttling. This doesn't talk about that at all, but whether you are buying a tiny case that bar

The biggest priority with small computers like this is thermal throttling. This doesn't talk about that at all, but whether you are buying a tiny case that barely fits a mITX motherboard or one of these, handling thermal throttling is the difference between a computer that feels smooth and one that feels more like a raspberry pi with UIs, video and web pages. I've gone down the rabbit hole with both a NUC and an AMD APU and thermals are everything. There are lots of BIOS options to control dynamic overclocking and throttling on both to make them not generate so much heat, but allow them to run much hotter before they throttle. Then there are windows power settings as well. Anyone who expects to plug them in and get the best performance is unfortunately going to slam into reality.