What is the biggest size DDR3 Memory Module today and biggest size of one chip in the module, and what is the chip organization?
Samsung has a 32GB DIMM.
This article has a good description of the organization:
Notice little 'b' = bits and big 'B' = bytes.
They have since shrunk the die size from 50nm to 40nm to 30nm which decreases the voltage and increases the throughput as stated in this article:
They mention 20nm chips being available by the end of 2011, but I haven't seen an article stating they've packaged them into a DIMM yet.