QuickSpecs
HP Z640 Workstation
System Technical Specifications
c04400040 — DA – 15080 Worldwide — Version 6 — April 1, 2015
Page 18
Memory Loading Order:
Load Order for Single Processor Configuration
Load Order for Dual Processor Configuration
Maximum Memory
Supports up to 256GB with two processors.
Please refer to the table above for details on how supported memory configurations are installed in
your system.
* For 32 bit operating systems, there is a memory limit of 4GB.
~ Although technically possible, these configurations are not available to order at this time.
Memory Configuration
(Supported)
Not all memory configurations possible are represented above.
Only Registered and LR ECC DIMMs are supported.
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.
RDIMM (Registered) and LRDIMM (Load Reduced) memory cannot be mixed. All memory
installed in the system must be either RDIMM or LRDIMM.
PCI Express Connectors Slot 1
(top):
PCI Express Gen2 x1 with open-ended connector*
Full-height, Half-length
(not available when 2nd CPU/Memory Module is installed)
Slot 2:
PCI Express Gen3 x16
Full-height, Full-length (with extender)
Slot 3: