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>> I am blown away by the wafer of Xbox 360 CPUs hanging on this guy's wall. That was a kingly gift! Yeah, the only place I've seen a full wafer on display is

>> I am blown away by the wafer of Xbox 360 CPUs hanging on this guy's wall. That was a kingly gift! Yeah, the only place I've seen a full wafer on display is a display case in the lobby of a chip company office building. I wonder how often some process goes out of whack and they get an entire known-bad wafer that still looks great?

londons_explore 5y ago
You can buy complete wafers on ebay for a few bucks, so I'd guess it's pretty common. I think many of the alignment steps during manufacturing involve making a wafer, seeing how misaligned it is using an electron microscope, adjusting all the machines, then making another wafer. Repeat until the wafers start working.
- Cthulhu_ 5y ago
  Yeah I'm seeing them for like $80 for 20-30 year old wafers, it'd make a pretty neat decorative piece: https://www.ebay.com/sch/i.html?_nkw=cpu+wafer https://www.ebay.com/sch/i.html?_nkw=cpu+wafer reminds me of when I had some 'trash' leftover CPU's, chips, or memory units; drill a hole in it and you have a keychain gadget.
  - deleted 5y ago
    [deleted]
  - tomcam 5y ago
    Wow. Those are beautiful. If I had wall space left I’d start a collection.