Fearing a botched launch for Pentium 4 because of insufficient supplies of RDRAM, Intel has conceded in recent weeks that it will use other memory technologies like conventional SDRAM and possibly DDR as a memory option with Pentium 4.
Secondly, Cisco Extended Memory technology allows each blade server in a cluster to support more than twice as much memory as a conventional two-socket server, which makes it easier to construct grids that process terabytes of data in memory.
This is enormously faster than conventional DRAM memory and is targeted initially for network switching application as well as high performance computing.