All the vintage mainframe stuff is pretty mind blowing. There is an awesome hidden gem on YouTube: CPU Galaxy. He has a huge collection of vintage CPUs. IBM 9

All the vintage mainframe stuff is pretty mind blowing. There is an awesome hidden gem on YouTube: CPU Galaxy. He has a huge collection of vintage CPUs. IBM 9121 Mainframe CPU https://www.youtube.com/watch?v=s7lVfOi7su4 https://www.youtube.com/watch?v=s7lVfOi7su4 Dave from EEVBlog also made a video about it https://www.youtube.com/watch?v=xQ3oJlt4GrI https://www.youtube.com/watch?v=xQ3oJlt4GrI