You know this, obviously most others did not/do not. I will try and explain it for the rest of the folks here who may not know, how it was explained to me many many years ago. RISC computing is good for math and simple things like engine management or simple file management duties of a NAS, or even simple phone duties (be it a central phone server for an office or the cell phone many people hold in their hand). This requires much less transistors, less power = less heat output. CISC is good for multimedia, gaming, and so-forth. The complex instruction set is good for making short work of complex multimedia that most RISC processors would need many cycles to 'break down' and process. This being very complex, requiring millions of transistors, many complex instruction sets on-top of typical x86 / 64 instruction sets, but the more instructions = the more you can do with less processor cycles. For some duties, a RISC processor is inherently better; but if you watch movies or play lots of current-gen / last-gen games, CISC is the answer by leaps and bounds. So if you want to play the latest quarterly iteration of Call of Doodey, Cattlefield, or Couch-Fort Night, you'll want an x86/64 CISC CPU or APU processor. If you want to run your power grid, corporate / regional phone system, file server, industrial robot, or even a calculator/smart home thermostat or IOT devices, a RISC CPU is almost always better by a long-shot. I hope that helps explain some of it a little better, but I'm no field expert by a long shot (though I got my certs circa 1999~2000, and have worked a wide variety of fields).