Quick Specs

Memory Loading Order:
Maximum Memory Supports up to 256GB using RDIMMs
Supports up to 1024GB using LRDIMMs
Supports up to 2048GB using LRDIMMs
Memory Configuration (Supported) Not all memory configurations possible are represented. Not all memory configurations
shown are available as CTO. Please check Ordering Guide for supported configurations.
Only ECC DIMMs are supported.
RDIMM (Registered) and LR DIMM (Load Reduction) memory cannot be mixed. All memory
installed in the system must be either RDIMM or LR DIMM.
Do not install memory modules into memory slots if corresponding processor is not installed.
Dual processor configurations with memory modules installed for only one processor is not
supported.
The Z840 will support up to 512GB at initial release.
QuickSpecs
HP Z840 Workstation
System Technical Specifications
DA - 15098 Worldwide QuickSpecs — Version 3 — 11/1/2014 Page 16