HP Z820 Specification page 19

QuickSpecs
System Technical Specifications
Maximum Memory
Memory Configuration
(Supported)
PCI Express Connectors
PCI Connectors (5.0V)
Supported Drive Interfaces
Integrated Graphics
Supports up to 64GB using UDIMMs
Supports up to 256GB using RDIMMs
Supports up to 512GB using LRDIMMs
Not all memory configurations possible are represented.
Only ECC DIMMs are supported.
UDIMM (Unbuffered), RDIMM (Registered) and LR DIMM(Load Reduction) memory cannot be
mixed. All memory installed in the system must be either UDIMM or RDIMM or LR DIMMs.
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.
PCIe3 x16, qty 3 (qty 2 when optional 2nd CPU is not installed)
NOTE:
3rd PCIe x16 slot is ONLY available when 2nd CPU is installed. This is Slot #4 on the system board
and is designated by a white-colored PCIe connector.
PCIe3 x16 (8), qty 1 (qty 0 when optional 2nd CPU is not installed)
NOTE:
This slot is ONLY available when 2nd CPU is installed. This is Slot #3 on the system board and is
designated by a white-colored PCIe connector.
PCIe3 x8 (4), qty 1 (open-ended connector)
PCIe2 x8 (4), qty 1 (open-ended connector)
PCI 32b, 33MHz (supports 64-bit cards), qty 1
SATA
Serial Attached SCSI
Integrated RAID
None
DA - 14264 North America — Version 36 — December 1, 2013
HP Z820 Workstation
Integrated 2-channel SATA 6.0Gb/sec controller
and Integrated 4-channel 3.0Gb/sec controllers
with RAID 0, 1, 5, 10 and NCQ. (Factory integrated
RAID is Microsoft Windows only)
Integrated 8-channel SAS 6.0Gb/sec controller
with HW RAID 0, 1, 10
SATA: RAID 0, 1, 5, 10
SAS: HW RAID 0, 1, 10
Page 19