Comparing RDIMMs, LRDIMMs and HCDIMMs/HDIMMs
UPDATE: 07/06/2012 – VMware certifies Netlist as sole memory vendor
Adding this as an entry point (or crash course) for folks asking about HCDIMMs and HDIMMs on twitter.
IBM HCDIMMs are Netlist HyperCloud.
HP HDIMMs are Netlist HyperCloud (called “HP Smart Memory HyperCloud”).
HP Smart Memory includes some other diagnostic/error features, and so that feature set has been extended to the HyperCloud and it is therefore also called a “HP Smart Memory”.