Though it is the best performing memory solution for the P4, I have heard many, many times in these forums that Rambus has an awfull lot of latency. It is just because of the dual channel configuration that it manages to stay ahead ... So dual channel DDR will outperform RDRAM completely, I think.
The only way that will happen soon is if SiS releases the 655 chipset. But it looks like they are delaying the 655 to make room for the RDRAM based 658. I figure the only way we'll get the 655 is to raid SiS and steal a couple sample boards. Who's with me?
<font color=blue>By now you're probably wishing you had asked more questions first!</font color=blue>