EEVblog #1341 - AMAZING $250,000 IBM Processor TEARDOWN!

Teardown of a $250,000 1991 vintage IBM 9121 TCM Processor module from a System/390 ES9000 Enterprise Server mainframe computer,.
Amazing state of the art 63 layer ceramic hybrid module construction with 2772 pins!
Part 2 X-RAY! https://www.youtube.com/watch?v=xa0mieJHM94
And Dave demonstrates an amazing BGA desoldering technique that can only be done on these ceramic hybrid PCB's.
TCM PDF: https://eevblog.com/files/ibm-system390-air-cooled-alumina-thermal-conduction-module.pdf
Another teardown with an amazing cutaway view! https://www.youtube.com/watch?v=s7lVfOi7su4

Forum: https://www.eevblog.com/forum/blog/eevblog-1341-amazing-$250-000-ibm-processor-teardown/

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#IBM #Vintage #Teardown