Typically how close is the TDP of the CPU to the full system power draw? Can see a few refurbished on ebay that don’t look too bad

Is it fair to compare new to used though? Also how about power consumption, if it’s on for 5 years each watt costs £13, so for something that will be on a long time power is actually quite an important consideration

Can you get those as cheaply though? Can understand getting something other than a pi as you don’t need the GPIO but are there any good alternatives that are cheaper? If not may as well go for the pi

What is the typical power consumption of the steamdeck when in use? If you wanted to get an approximation as to how long a battery would last for. Also how much is efficiency likely to matter? If it was 30W and you had a 30Wh battery how likely is a 1 hour lifespan going to be? Would efficiency just be a rounding error or something like cut in half.