When it comes to RAM most of us are still happy with 4GB or 6GB of memory. For some people that just is not enough RAM though. G.Skill has announced a new RAM kit with 48GB of total memory.
The kit has 12 hand-picked 4GB DIMMs and is specifically designed for machines using the EVGA Super Record 2 mainboard. That board has dual Intel Xeon CPU sockets.
The mainboard also supports 4-way SLI and more. I can't imagine the performance you could get out of a rig using a pair of 6-core CPUs, 4-way SLI, and 48GB of RAM.