XDR DRAM(eXtreme Data Rate DRAM ) is based on XDR memory interface technology developed by Rambus and offers several innovative techniques that include ODR(Octal Data Rate), DRSL(Differential Rambus Signaling Level) and etc.
As a result, XDR DRAM achieves an order of magnitude higher performance than today's standard professional memories.
XDR DRAM has three speed grades, ranging from 2.4GHz to 4.0GHz, with the expectation that data transfer speeds will rise to 8.0GHz in the near future.