HP Z840 Workstation - Memory configurations and optimization; Supported memory modules; Platform capabilities

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Technical white paper | HP Z840 Workstation
Memory congurations and
optimization
The purpose of this section is to provide an overview of the memory
congurations for the HP Z840 Workstation and to provide recommendations to
optimize performance.
Supported memory modules
Types of memory supported on an HP Z840 are:
• 4 GB, 8 GB, and 16 GB PC4-2133R 2133 MHz DDR4 Registered DIMMs
• 32 GB, 64 GB, and 128 GB PC4-2133L 2133 MHz DDR4 LR DIMMs
– 64 GB LR DIMMs are expected to be available early 2015
– 128 GB LR DIMMs are expected to be available late 2015
• Single and dual rank 4 GB and 8 GB based DIMMs are supported
• Quad and octal rank 4 GB and 8 GB based LR DIMMs are supported
Types of memory NOT supported on an HP Z840 are:
• Unbuered DIMMs
• Non-ECC DIMMs
• DDR, DDR2, or DDR3 DIMMs
See Memory Technology White Paper for more memory module technical information.
Platform capabilities
Maximum capacity
• Single processor: 256 GB at launch
– 512 GB when 64 GB LR DIMMs are available
– 1 TB when 128 GB LR DIMMs are available
• Dual processors: 512 GB at launch
– 1 TB when 64 GB LR DIMMs are available
– 2 TB when 128 GB LR DIMMs are available
Total of 16 memory sockets
• 8 memory sockets available per CPU
• 4 channels per processor and 2 sockets per channel
Speed
• 2133 MHz, 1866 MHz, and 1600 MHz memory speeds are supported in this platform.
• Memory will operate at the speed of the slowest rated installed processor or DIMM.
Registered and LR DIMMs cannot be mixed in a system
Dynamic power saving is enabled
NUMA and Non-NUMA modes are supported and user congurable