# SDRAM and DDR
**URL:** https://forum.kirupa.com/t/sdram-and-ddr/60481
**Category:** random
**Created:** [August 10, 2004, 6:24am UTC](https://forum.kirupa.com/t/sdram-and-ddr/60481 "2004-08-10T06:24:30Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Vexir](https://forum.kirupa.com/u/Vexir)
#### Post date: [August 10, 2004, 6:24am UTC](https://forum.kirupa.com/t/sdram-and-ddr/60481/1 "2004-08-10T06:24:30Z")
Whats the difference between SDRAM and DDR? I’ve never really found out lol =)
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [August 10, 2004, 6:48am UTC](https://forum.kirupa.com/t/sdram-and-ddr/60481/2 "2004-08-10T06:48:03Z")
The basic difference is that DDR is more efficient as well as being more faster then SDRAM when it comes to data processing. It is why more users have ddr ram on their computer then sdram. On another note, there is also RDRam which is faster than ddr. It has a high speed bus of which processes 800million samples/a sec. Its expensive but when it comes to speed, it depends also on your system acrhitecture.
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [August 10, 2004, 7:08pm UTC](https://forum.kirupa.com/t/sdram-and-ddr/60481/3 "2004-08-10T19:08:56Z")
I think I have 2 dimms of DDR right now, could I replace them with 2 dimms of RDram?
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [August 10, 2004, 7:23pm UTC](https://forum.kirupa.com/t/sdram-and-ddr/60481/4 "2004-08-10T19:23:22Z")
everything you need to know…
[http://www.ntsi.com/DDRRam\_Explained.htm](http://www.ntsi.com/DDRRam_Explained.htm)
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [August 10, 2004, 7:37pm UTC](https://forum.kirupa.com/t/sdram-and-ddr/60481/5 "2004-08-10T19:37:16Z")
Cool. Now I just need to get an iPod mini… (not iPod, too much space, too much money :P)
:mu: