# RAM question

**URL:** <https://forums.speedlife.net/t/ram-question/20272>\
**Category:** NYSpeed Off Topic\
**Created:** [November 16, 2006, 10:23am UTC](https://forums.speedlife.net/t/ram-question/20272 "2006-11-16T10:23:10Z")\
**Posts on this page:** 1\
**Showing post:** 9

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**Author:** ![JustinH](https://avatars.discourse-cdn.com/v4/letter/j/9fc29f/32.png) [@JustinH](https://forums.speedlife.net/u/JustinH)\
**Post date:** [November 16, 2006, 12:13pm UTC](https://forums.speedlife.net/t/ram-question/20272/9 "2006-11-16T12:13:50Z")

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> [@FuzzyFish](#):
>
> No, PC133 (168-pin) won’t physically fit in a slot using PC2100 (184-pin)
> 
> PC66/PC100/PC133 are “usually” interchangable, depending on the motherboard.

Ding your correct sir.

PC2100 is DDR memory.

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