Quick Specs

The Z840 will support up to 1024GB when 64GB DIMM support is added following initial Z840
release.
The Z840 will support up to 2048GB when 128GB DIMM support is added following initial
Z840 release.
PCI Express Connectors
Two PCIe Gen3 x16 with latch
One PCIe Gen3 x16 with latch.
Enabled only with optional 2nd CPU is installed.
One PCIe Gen3 x8 open-ended connector.
Enabled only with optional 2nd CPU is installed.
One PCIe x8 open-ended connector.
Enabled for One PCIe Gen2 x4 slot with 1 CPU
Enabled for One PCIe Gen3 x8 with optional 2nd CPU installed
One PCIe Gen3 x4 open-ended connector.
One PCIe Gen2 x1 open-ended connector
Supported Drive Interfaces SATA sSATA @6Gb/s, Supports RAID 0,1,5,10 and NCQ.
Factory integrated RAID is Microsoft Windows only.
External SATA (eSATA)*
Supported on all SATA and sSATA ports configurable with optional
eSATA* After-Market Option cable kit)
* hot plug / hot swap not supported with eSATA
External SATA (eSATA)*
Supported on all SATA and sSATA ports configurable with optional
eSATA* After-Market Option cable kit)
* hot plug / hot swap not supported with eSATA
Serial Attached SCSI Integrated 8-channel SAS 6.0Gb/sec controller with HW RAID 0, 1, 10
Integrated RAID SATA: RAID 0, 1 (Supports one RAID)
SATA: RAID 0, 1, 5, 10 (Supports up to 2 RAIDs)
SAS: HW RAID 0, 1, 10 (Supports up to 2 RAIDs)
Integrated Graphics None
Network Controller
Memory Integrated 3KB receive buffer and 3KB transmit buffer
Data rates supported: 10/100/1000 Mb/s
Compliance IEEE 802.1as, 802.1p, 802.1Q, 802.3, 802.3ab, 802.3az,
802.3i 802.3u, 802.3x, 802.3z
Bus architecture PCIe 1.0 x1 and SMBus
Power requirement 0.5 watts
Boot ROM support
Network transfer rates:
10BASE-T (half-duplex) 10 Mb/s
QuickSpecs
HP Z840 Workstation
System Technical Specifications
DA - 15098 Worldwide QuickSpecs — Version 3 — 11/1/2014 Page 17