HP Z620 Brochure & Specs page 17

QuickSpecs
System Technical Specifications
NOTE: CPU0 is located on the main system board. CPU1 (optional) is located on an add-in riser card.
Maximum Memory
Memory Configuration
(Supported)
PCI Express Connectors
Supports up to 192GB with two processors and (12) 16 GB DIMMs

Not all memory configurations possible are represented above.

Only 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.

UDIMM (Unbuffered) and RDIMM (Registered) memory cannot be mixed. All memory installed in
the system must be either UDIMM or RDIMM.
Slot 1 (top):
PCI Express Gen2 x4(1)*
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:
PCI Express Gen2 x8(4)* with open-ended connector**
Full-height, Full-length (with extender)
Slot 4:
PCI Express Gen3 x8 with open-ended connector**
Full-height, Full-length (with extender)
DA – 14262 Worldwide — Version 40.1 — May 22, 2014
HP Z620 Workstation
Page 17