

All devices on the computer consume power.
The CPU being the largest in this context. Older processors usually don’t have as aggressive throttling as modern ones for low power scenarios.
Similarly, the “power per watt” of newer processors is incredibly high in comparison, meaning they can operate at much lower power levels while running the same workload.


The amount of Labor that would go into it it really isn’t that high.
This is what distribution is for.
The company that owns the hardware is not the company that recycles it. The recycler can make a profit by reselling these components, they’re not allowed to.
Many of these components still have to be pulled out so that labor cost is already a wash. The additional labor cost of testing, selling, packaging, and shipping is baked into the price in the secondary market.
Not everything is worth being resold, but many things are and those things are often not allowed to be resold due to destruction contracts.