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Apple has a memory problem and we're all paying for it
(www.macworld.com)
This is a most excellent place for technology news and articles.
I remember back in the 90's when some Macintosh computers came with resistors making them slower, so that Apple could sell "budget" models of their faster line of computers.
We were savvy and would remove them, but I bet 99% of buyers had no clue and just went along with it.
How did that work? Some kind of jumper that set the clock rate?
I have honestly no clue, it was a long time ago, but I could imagine many ways a simple resistor could impact overall performance to a very specific degree.