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Cost of a 128KB computer with floppies in 1985
(sopuli.xyz)
How much would you pay for a PC with 128KB RAM, and no hard disk?
In today's money (inflation adjusted)
This an ad from Personal Computer World (UK) from 1985
So everything is about right. Today you can buy a budget pc, and skim on performance, but back then (and I was there man!) you could not.
In 1985 HDD were only starting to gain traction for PC's and that was about the only thing you could spec up. That IBM pc is "High Res" which probably means it was VGA multicolour (yay!lol) with 640x480 resolution. So you were basically buying top of the line.
Today, if you were to build a top of the line PC, RTX4090, latest best intel cpu, PSU, etc, etc it would be easy to spend $5K!
But damn, the difference in performance from back then to now!! (That IBM is an XT which means it was a 4.77Mhz with 8086 cpu. Just looking at that picture, I can feel the weight of the bloody thing)
eh. Money is worth a third of what it was worth.