Netlist suggests Q1 2013 availability
Netlist’s HyperCloud HCDIMMs are an RDIMM-compatible load reduction and rank multiplication product.
LRDIMMs are a new standard which are not compatible with RDIMMs.
HCDIMMs outperform the LRDIMMs in performance, latency, price and IP issues.
Now there are signs that 1600MHz versions of HCDIMMs may become available in Q1 2013.
In the text accompanying Figure 4 in their blog, Netlist mentions 1600MHz HyperCloud HCDIMM availability in Q1 2013:
HyperCloud HCDIMM: Scaling the High Density Memory Cliff
July 24, 2012 at 5:00 AM
See text accompanying Figure 4 – which suggests that 1600MHz HCDIMM will be available in Q1 2013.
It is possible that 1600MHz varieties of HCDIMM may be usable on the non-Intel-POR servers like the IBM x3750 M4 server which have implemented a motherboard tweak which “raises all boats” i.e. RDIMMs and LRDIMMs are able to run faster.
Memory choices for the IBM System X x3750 M4 servers
June 2, 2012
Since HyperCloud HCDIMM have greater leeway then the LRDIMMs (for example LRDIMMs max out at 1066MHz at 3 DPC on regular Intel POR servers – compared to 1333MHz at 3 DPC for the HCDIMM), it is possible that HCDIMM could achieve greater than 1333MHz speeds on servers like the IBM x3750 M4 server (speculative).
The preparation for 1600MHz is also in line with the arrival of Ivy Bridge in late 2012 or early 2013, where 1600MHz speeds may be required at 3 DPC ?