The problem here, and I'm not nearly as versed in the ways of memory as FryingLizard, is simple. The crap doesn't work right. The 820 Chipset Intel put out was recalled. Further every benchmark I've seen calls RDRAM an incremental improvement over SDRAM -- clockspeed be damned.

Now when you figure it's 10 percent faster for 500 percent the cost one quickly sees why Intel is already getting off the RAMBUS (according to a Slashdot article I read the other day).