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Looks pretty interesting. I took a computer architecture class in Jan-Feb this year, and it was one of my favorite things in a long time. I've written software for ~6 years but I didn't really know much about how CPUs work, what an instruction is, what registers are, etc. so I learned a lot.

I thought a lot of these details could be boring or hard to grasp, but it was the opposite—to me, things like how logic gates worked, how we remember values between computer cycles were all very fascinating, especially compared to the kind of work I've done for a long time.

I've learned a bit more about operating systems and databases since then, and I think knowing a bit of computer architecture helped me understand several topics in much better depth. So even if knowing these things doesn't have a very direct ROI in terms of getting a job, I think it's worth spending the time to learn at least the basics.