Deleted this post.
Qualifications on other servers in the works
HyperCloud is only available on the HP DL360p and DL380p and IBM x3650 M4 servers – these are high volume virtualization/data center servers and should provide sufficient unit volume demand for Netlist.
While this volume maybe sufficient for Netlist, the lack of availability on other IBM/HP servers does create problems for end-users trying to create a mental map of “how to choose memory” for servers.
Load reduction and rank multiplication at 1600MHz ?
1600MHz-rated 16GB RDIMMs (2-rank) are available for Romley – why not LRDIMM/HyperCloud ?
The reason maybe that load reduction and rank multiplication manufacturers are already outperforming the RDIMMs by ONE speed grade.
Offering a 1600MHz version that offers a FURTHER speed grade advantage, while advantageous to end-users, may not offer a greater-units-sold advantage to the manufacturers of load reduction and rank multiplication solutions.
32GB RDIMMs/LRDIMMs vs. 32GB HyperCloud
Both 32GB RDIMMs and 32GB LRDIMMs being offered today are using 4Gbit x 2 DDP memory packages.
32GB HyperCloud are using 4Gbit monolithic memory packages.
Betamax vs VHS all over again ?
The choice of load reduction and rank multiplication memory – whether HyperCloud or LRDIMMs – may seem superficially like another such “standards battle” – that of Betamax vs. VHS (where the inferior technology won out because of market conditions).
This may superficially seem to be the situation with memory choices – but it is not.
The primacy of load reduction and rank multiplication for 32GB
UPDATE: added 07/06/2012: Netlist on 8Gbit DRAM die non-availability
UPDATE: added 07/06/2012: Inphi on 8Gbit DRAM die non-availability
32GB RDIMMs are all 4-rank (quad-rank).
4-rank creates a high memory load on the memory bus.