DDR and SD RAM ??

And the main difference is that SD-RAM has a frequincy of mx 133 MHZ DD-RAm has one up to 1066 MHZ :D

i know a bit about it but if u want to know everything about it u better go to wikipedia n search for the topic u will get the pictures n full informatin n some other link. .

DDR is new techology dear and SD become obsolete from market and future board slote will not be available for SD ram. SD- Synchronus Dynamic random access memory DDR-Double data rate DDR transfer data with double speed that SD . SD becomes obsolete now.....

SD- synchronoun Dynamic & DDR-- double data rate. SD is used upto p-III computers & DDR is used in all p-IV computers.

DDR Ram

to add to what has been written i would like to mention that as the name goes sdram it is synchronized with the processor bus of your system in other words the fsb it has a better data transfer rate it constitutes as the main memory of your system it transfers and stores data on it dynamically thats is till the time the power backup is there and the capacitors can store charge on it whereas ddr stands for double data rate which is achieved by transferring data in rising and falling edge of the clock cycle it is advantageous and is used in graphics card is available in three forms ddr ddr2 and latest is ddr3

i dont know.sorry i cant help u out amyway.sorry

"SD" stands for Synchronized Data and "DD" means Double Data. DDRs are faster than SDRs. You can distinguish the two by the number of gaps they have on them. SDRs have two while DDRs have only one. =) Oh, and DDR is better than SDR according to my experiences. =)