# Was there an IBM computer where a memory upgrade was flicking a switch?

**URL:** <https://boards.straightdope.com/t/was-there-an-ibm-computer-where-a-memory-upgrade-was-flicking-a-switch/1002272>\
**Category:** Factual Questions\
**Created:** [May 30, 2024, 11:11am UTC](https://boards.straightdope.com/t/was-there-an-ibm-computer-where-a-memory-upgrade-was-flicking-a-switch/1002272 "2024-05-30T11:11:10Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Darren\_Garrison](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/darren_garrison/32/92_2.png) [@Darren\_Garrison](https://boards.straightdope.com/u/Darren_Garrison)\
**Post date:** [May 30, 2024, 11:30am UTC](https://boards.straightdope.com/t/was-there-an-ibm-computer-where-a-memory-upgrade-was-flicking-a-switch/1002272/2 "2024-05-30T11:30:10Z")

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Here’s one example:

> [@Energy needs of UNIVAC type computers](https://boards.straightdope.com/t/energy-needs-of-univac-type-computers/993501/55):
>
> From the wiki: The Cyber-72 had identical hardware to a Cyber-73, but added additional clock cycles to each instruction to slow it down. This allowed CDC to offer a lower performance version at a lower price point without the need to develop new hardware. Don’t tell me nobody tried to hack that!

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