For servers, there will always be a demand for more cores. Look
at SGI's Altix UV series which already supports up to 2048 cores
and 16TB RAM in a single system (256 x 8-core XEON 7500 series
CPUs, ie. the Altix UV 1000). They plan to expand this to 32768
CPUs (more than a quarter of a million cores) in future
products.
The low-end UV 10 is a quad-socket system supporting 32 cores
(4 CPUs) and 512GB RAM, which can then be clustered if required.
The mid-range UV 100 offers 768 cores and 6TB RAM. See:
http://www.sgi.com/products/servers/altix/uv/index.html
http://www.sgi.com/products/servers/altix/uv/specs.html
http://www.sgi.com/products/servers/altix/uv/specs_uv10.html
There are other vendors with quad-socket products, eg. the
Dell R810 and R9xx, but SGI clearly has a demand for systems
with very large numbers of cores single system image, something
which can only be enhanced by having products with more cores
per CPU. There are numerous defense, bio/pharma, geoscience and
other applications which benefit from these improvements.
Ian.