Tales of Weird Stuff | Are you Angry about Dell's CAMM? Then listen to this story about bad RAM! @TalesofWeirdStuff | Uploaded December 2022 | Updated October 2024, 13 hours ago.
If you're angry about Dell's new CAMM format, wait until you hear about this stuff! This is the first in a series I plan to call "technology I don't miss." We've had a good run with the relative stability of the DIMM format, but things used to be a lot more chaotic, and this video surveys some of the difficulties of memory upgrades in years gone by.

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00:00 Intro
01:58 Why are DIMMs great (and terrible)?
09:46 Upgrade by soldering
13:50 Memory expansion boards
24:16 $599???
26:38 ZIPs are the WORST
33:35 SIPPs are pretty bad too
37:34 30-pin SIMMs and 72-pin SIMMs
45:27 Mixy matchy
46:40 Closing words

Description of 168-pin DIMM keying:

ps-2.kev009.com/eprmhtml/eprma/h870.htm

Good but brief article about XMS vs EMS:

dfarq.homeip.net/expanded-vs-extended-memory-ems-vs-xms

The 144 page manual for the Intel Above Board PS/AT:

minuszerodegrees.net/manuals/Intel/Intel%20-%20Installing%20the%20Above%20Board%20PS_AT%20(First%20edition%20June%201986).pdf