# DDR Memory

**URL:** https://boards.straightdope.com/t/ddr-memory/409349
**Category:** Factual Questions
**Created:** [June 25, 2007, 5:24pm UTC](https://boards.straightdope.com/t/ddr-memory/409349 "2007-06-25T17:24:12Z")
**Posts on this page:** 6
**Page:** 1

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### Author: ![essell](https://avatars.discourse-cdn.com/v4/letter/e/34f0e0/32.png) [@essell](https://boards.straightdope.com/u/essell)
#### Post date: [June 25, 2007, 5:24pm UTC](https://boards.straightdope.com/t/ddr-memory/409349/1 "2007-06-25T17:24:12Z")

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Can I put DDR2 memory into a system that normally uses DDR memory?  
I’ve got the chance of some very nice DDR2 at a good price but I’m unsure.

It’d be great to have the faster stuff for when I upgrade but will it happily scale down from PC6400 to PC3200 ?

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### Author: ![drachillix](https://avatars.discourse-cdn.com/v4/letter/d/48db29/32.png) [@drachillix](https://boards.straightdope.com/u/drachillix)
#### Post date: [June 25, 2007, 5:27pm UTC](https://boards.straightdope.com/t/ddr-memory/409349/2 "2007-06-25T17:27:23Z")

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[QUOTE=essell]  
Can I put DDR2 memory into a system that normally uses DDR memory?  
I’ve got the chance of some very nice DDR2 at a good price but I’m unsure.

It’d be great to have the faster stuff for when I upgrade but will it happily scale down from PC6400 to PC3200 ?  
[/QUOTE]

Not compatible, DDR2 and DDR have different pin configurations and will not even fit in the same slot…

grumble grumble just ordered the wrong ram for one of the machines I was working on…grumble grumble…

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### Author: ![elmwood](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/elmwood/32/3060_2.png) [@elmwood](https://boards.straightdope.com/u/elmwood)
#### Post date: [June 25, 2007, 5:27pm UTC](https://boards.straightdope.com/t/ddr-memory/409349/3 "2007-06-25T17:27:56Z")

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Not really. The number and configuration of pins on a DDR stick is different than on a DDR2 stick.

EDIT: beaten.

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### Author: ![Lazlo](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/lazlo/32/9678_2.png) [@Lazlo](https://boards.straightdope.com/u/Lazlo)
#### Post date: [June 25, 2007, 11:18pm UTC](https://boards.straightdope.com/t/ddr-memory/409349/4 "2007-06-25T23:18:44Z")

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[QUOTE=elmwood]  
Not really. The number and configuration of pins on a DDR stick is different than on a DDR2 stick.

EDIT: beaten.  
[/QUOTE]

We’re talking computers here.

The proper term is “pwnt!”

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### Author: ![psychonaut](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/psychonaut/32/4655_2.png) [@psychonaut](https://boards.straightdope.com/u/psychonaut)
#### Post date: [June 26, 2007, 9:13am UTC](https://boards.straightdope.com/t/ddr-memory/409349/5 "2007-06-26T09:13:04Z")

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[QUOTE=Lazlo]  
We’re talking computers here.  
[/QUOTE]  
I opened this thread expecting a discussion of reminscences of East Germany.

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### Author: ![xnylder](https://avatars.discourse-cdn.com/v4/letter/x/bbce88/32.png) [@xnylder](https://boards.straightdope.com/u/xnylder)
#### Post date: [June 26, 2007, 1:20pm UTC](https://boards.straightdope.com/t/ddr-memory/409349/6 "2007-06-26T13:20:34Z")

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[QUOTE=psychonaut]  
I opened this thread expecting a discussion of reminscences of East Germany.  
[/QUOTE]

Don’t feel bad, I thought it was going to be about memorizing steps for Japanese arcade dance games.