Earlier quoted context omitted.
Besides power, the arguments for the desktops are also price, simple(r) upgrades and repairs.
It also seems that once you festoon the laptop with replacements for its components - monitor, keyboard, mouse, disk drives, camera, mike, etc., what have you got? An expensive desktop that performs poorly. > repairs I've replaced a couple screens on laptops. It's a fair amount of work, and in the meantime your laptop is dead while you await the arrival of the new screen. I keep a spare monitor around, and when a mon…
I think that would be CPU, motherboard and RAM. Graphics cards can be upgraded independently thanks to PCIe, which I often choose to do as they are in a price league of their own.
I'm sad CPU sockets change that often, I would like to stretch expenses a bit more, like using DDR3 for a little while before switching to DDR4. Unfortunately, when upgrading to the next generation, you pretty much have to upgrade those three at once. And Intel is way, way worse with that.
I hear that motherboard manufacturers lobby for new sockets...