Hynix demonstrates DDR3 R-DIMM using MetaRAM technology
 

At the ongoing Intel Developer Forum (IDF) (August 19-21) in San Francisco, Hynix Semiconductor announced that it is using MetaRAM's new DDR3 technology in its next generation R-DIMMs, including the world's first 16GB 2-rank DIMM (HMT32GR7AER4C-GD. The new 16 GB and 8 GB (HMT31GR7AER4C-GC) 2-rank DIMMs can triple DDR3 memory capacity in servers and workstations, enabling the world's highest memory capacity per channel without degrading performance, the company noted.

http://www.digitimes.com/news/a20080820PR200.html

Hm, I wonder what costs look like... Anandtech already saw one Nehalem server using 8GB DIMMs from MetaRAM, for a grand total of 144GB.