# RAM Speed?

**URL:** <https://forum.kirupa.com/t/ram-speed/251058>\
**Category:** random\
**Created:** [February 5, 2008, 1:54am UTC](https://forum.kirupa.com/t/ram-speed/251058 "2008-02-05T01:54:27Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Butters](https://avatars.discourse-cdn.com/v4/letter/b/b9e5f3/32.png) [@Butters](https://forum.kirupa.com/u/Butters)\
**Post date:** [February 5, 2008, 1:54am UTC](https://forum.kirupa.com/t/ram-speed/251058/1 "2008-02-05T01:54:27Z")

</div>

Ok so i’v pulled out 2 512MB DDR2 533mhz sticks out of my old PC.

Does all the RAM in a computer have to be the same speed? My new PC comes with 2 1GB DDR2 667mhz.

Will it actually fit and work properly?