Perfect for engineering, visualization and Machine Learning, HP’s most popular workstation delivers disruptive performance for a wide spectrum of applications. With a choice of Intel® Xeon® or Core™ X processors, and support for dual extreme graphics, you get all you need, nothing more.

Feature-rich functionality

The Z4 is ahead of its time with more standard features than any other single processor HP workstation. With multiple configuration options, you can choose the perfect blend of components that meet your performance requirements.

Visualization powerhouse

Visualize your project anytime with the power to move seamlessly between 3D CAD, rendering and simulation applications. The Z4 can easily handle tasks that require high frequency processing, multiple cores and high-powered GPUs for an optimized design process.

HP’s most secure workstations

Advanced security features come standard on every Z4. Rest assured your device, identity and data are safe with security software like HP Client Security Suite Gen3^[2] and HP Sure Start Gen3^[10] featuring a self-healing BIOS.

Operating system

Feature	Description
Preinstalled	Windows 10 Pro 64 for Workstations (only for Xeon W configurations) NOTE: For Core i9-X configurations from May 1, 2018. Windows 10 Pro 64 (only for Core X configurations) Windows 10 Pro 64 National Academic Plus (only for Core i7-X configurations) HP Linux Ready NOTE: Includes the drivers for 64-bit OS versions of Red Hat Enterprise Linux (RHEL) 6 and 7, SUSE Linux Enterprise Desktop 11 and Ubuntu 14.04. Red Hat Enterprise Linux Desktop Workstation NOTE: Paper license with 1-year support and no preinstalled OS. This second OS must be ordered with the HP Linux Installer Kit as the first OS.
Supported	Windows 7 Professional 64 (downgrade available by request from HP Support. Only for Xeon W configurations) NOTE: Windows 10 is preinstalled. Only one version of the Windows software can be used at a time. Switching between versions requires uninstalling one version and installing the other version. Back up all data (files, photos, etc.) before uninstalling and installing operating systems to avoid loss of data. Red Hat Enterprise Linux Desktop 7.4 SUSE Linux Enterprise Desktop 12 SP3 Ubuntu 16.04.3 LTS

Processors

Specifications	Description
Intel Xeon W-2195 processor	2.3 GHz 24.75 MB cache and 18 cores Up to 4.3 GHz with Intel Turbo Boost Technology Supports DDR4 memory up to 2666 MT/s data rate 140 W Supports Intel vPro technology
Intel Xeon W-2175 processor	2.5 GHz 19.25 MB cache and 14 cores Up to 4.3 GHz with Intel Turbo Boost Technology Supports DDR4 memory up to 2666 MT/s data rate 140 W Supports Intel vPro technology
Intel Xeon W-2155 processor	3.3 GHz 13.75 MB cache and 10 cores Up to 4.0 GHz with Intel Turbo Boost Technology Supports DDR4 memory up to 2666 MT/s data rate 140 W Supports Intel vPro technology
Intel Xeon W-2145 processor	3.7 GHz 11 MB cache and 8 cores Up to 4.5 GHz with Intel Turbo Boost Technology Supports DDR4 memory up to 2666 MT/s data rate 140 W Supports Intel vPro technology
Intel Xeon W-2135 processor	3.7 GHz 8.25 MB cache and 6 cores Up to 4.5 GHz with Intel Turbo Boost Technology Supports DDR4 memory up to 2666 MT/s data rate 140 W Supports Intel vPro technology
Intel Xeon W-2133 processor	3.6 GHz 8.25 MB cache and 6 cores Up to 3.9 GHz with Intel Turbo Boost Technology Supports DDR4 memory up to 2666 MT/s data rate 140 W Supports Intel vPro technology
Intel Xeon W-2125 processor	4.0 GHz 8.25 MB cache and 4 cores Up to 4.5 GHz with Intel Turbo Boost Technology Supports DDR4 memory up to 2666 MT/s data rate 120 W Supports Intel vPro technology
Intel Xeon W-2123 processor	3.6 GHz 8.25 MB cache and 4 cores Up to 3.9 GHz with Intel Turbo Boost Technology Supports DDR4 memory up to 2666 MT/s data rate 120 W Supports Intel vPro technology
Intel Xeon W-2104 processor	3.2 GHz 8.25 MB cache and 4 cores Supports DDR4 memory up to 2400 MT/s data rate 120 W
Intel Xeon W-2102 processor	2.9 GHz 8.25 MB cache and 4 cores Supports DDR4 memory up to 2400 MT/s data rate 120 W
Intel Core i9-7980XE processor	2.6 GHz 24.75 MB cache and 18 cores Up to 4.2 GHz with Intel Turbo Boost Technology Supports DDR4 memory up to 2666 MT/s data rate 165 W
Intel Core i9-7960X processor	2.8 GHz 22 MB cache and 16 cores Up to 4.2 GHz with Intel Turbo Boost Technology Supports DDR4 memory up to 2666 MT/s data rate 165 W
Intel Core i9-7940X processor	3.1 GHz 19.25 MB cache and 14 cores Up to 4.3 GHz with Intel Turbo Boost Technology Supports DDR4 memory up to 2666 MT/s data rate 165 W
Intel Core i9-7920X processor	2.9 GHz 16.5 MB cache and 12 cores Up to 4.3 GHz with Intel Turbo Boost Technology Supports DDR4 memory up to 2666 MT/s data rate 140 W
Intel Core i9-7900X processor	3.3 GHz 13.75 MB cache and 10 cores Up to 4.3 GHz with Intel Turbo Boost Technology Supports DDR4 memory up to 2666 MT/s data rate 140 W
Intel Core i9-7820X processor	3.6 GHz 11 MB cache and 8 cores Up to 4.3 GHz with Intel Turbo Boost Technology Supports DDR4 memory up to 2666 MT/s data rate 140 W
Intel Core i9-7800X processor	3.5 GHz 8.25 MB cache and 6 cores Up to 4.0 GHz with Intel Turbo Boost Technology Supports DDR4 memory up to 2666 MT/s data rate 140 W
Chipset	Single LGA 2066 R4

NOTE:

Multicore is designed to improve performance of certain software products. Not all customers or software applications necessarily benefit from use of this technology. 64-bit computing system required. Performance and clock frequency vary depending on application workload and hardware and software configurations. Intel numbering is not a measurement of higher performance.

Graphics

Feature	Description
Entry 3D (two graphics card supported)	NVIDIA Quadro P600 2GB Graphics (first GFX) NVIDIA Quadro P400 2GB Graphics NVIDIA Quadro P600 2GB Graphics NOTE: Dual graphics configuration requires the 750 W chassis. AMD FirePro W2100 2GB Graphics NOTE: Dual graphics configuration requires the HP Z4 G4 Fan and Front Card Guide Kit, available both as CTO and AMO.
Mid-range 3D (two graphics card supported)	NVIDIA Quadro P1000 4GB Graphics (first GFX) NVIDIA Quadro P2000 5GB Graphics (first GFX) AMD Radeon Pro WX 3100 4GB Graphics AMD Radeon Pro WX 4100 4GB Graphics NOTE: Dual graphics configuration requires the requires the 750 W or 1000 W chassis and the HP Z4 G4 Fan and Front Card Guide Kit, which is available both CTO and AMO.
High End 3D (two graphics card supported)	AMD Radeon Pro WX 7100 8GB Graphics (first GFX) AMD Radeon Pro WX 9100 16GB Graphics NVIDIA Quadro P4000 8GB Graphics (first GFX) NVIDIA Quadro P5000 16GB Graphics (first GFX) NVIDIA Quadro P6000 24GB Graphics (first GFX) NVIDIA Quadro GP100 16GB Graphics NVIDIA Quadro Sync II NOTE: Single graphics configuration requires the requires the 750 W and 1000 W chassis and the HP Z4 G4 Fan and Front Card Guide Kit, which is available both CTO and AMO. Dual graphics configuration requires the 1000 W chassis.
Graphics cable adapters	HP DisplayPort to HDMI Adapter HP DisplayPort to Dual Link DVI Adapter HP DisplayPort to DVI-D Adapter HP DisplayPort to DVI-D Adapter (2-pack) HP DisplayPort to DVI-D Adapter (4-pack) HP DisplayPort to DVI-D Adapter (6-pack) HP NVIDIA SLI 2-Slot Graphics Connector HP Single miniDP-to-DP Adapter Cable HP Single miniDP-to-DP Adapter Cable (2-pack) HP Single miniDP-to-DP Adapter Cable (4-pack) HP Single miniDP-to-DP Adapter Cable (8-pack)

Displays

Feature	Description
Displays	HP Z Display Z22n G2 HP Z Display Z23n G2 HP Z Display Z24i G2 HP Z Display Z24n G2 HP Z Display Z24nf G2 HP Z Display Z27n G2 HP Z27s 27-inch IPS UHD Display (4K display) NOTE: Resolutions are dependent upon monitor capability and resolution and color depth settings. Screen size is measured diagonally. All monitors are supported by all operating systems available from HP.

Storage and drives

Feature	Description
Serial Attached SCSI (SAS) Hard drive	HP 300GB 15K SAS SFF Hard Drive (controller add-in card required) NOTE: Only available on Xeon W configurations.
SATA Hard Disk Drive (HDD)	HP 500GB SATA 6Gb/s 7200 Hard Drive HP 500GB 7200rpm SATA SFF SED Hard Drive HP 1TB SATA 6Gb/s 7200 Hard Drive HP 1TB Enterprise SATA 7200 HDD HP 2TB SATA 6Gb/s 7200 Hard Drive HP 4TB SATA 7200 Hard Drive NOTE: Up to (4) 8.89 cm (3.5 in) 7200 rpm SATA drives. 500 GB, 1.0, 2.0, 4.0 TB. 16 TB maximum total.
SATA Solid State Drives (SSD)	HP 256GB SATA SSD HP 512GB SATA SSD HP 1TB SATA SSD HP 2TB SATA SSD HP 256GB SATA SED Opal2 Solid State Drive HP 512GB SATA SED Opal2 Solid State Drive HP Enterprise Class 240GB SATA SSD HP Enterprise Class 480GB SATA SSD
PCIe Solid State Drives (SSD)	HP Z Turbo Drive 256GB MLC (Z4/Z6 G4) SSD Kit HP Z Turbo Drive 512GB MLC (Z4/Z6 G4) SSD Kit HP Z Turbo Drive 1TB MLC (Z4/Z6 G4) SSD Kit HP Z Turbo Drive 256GB TLC (Z4/Z6 G4) SSD Kit HP Z Turbo Drive 512GB TLC (Z4/Z6 G4) SSD Kit HP Z Turbo Drive 1TB TLC (Z4/Z6 G4) SSD Kit HP Z Turbo Drive 256GB SED (Z4/Z6 G4) SSD Kit HP Z Turbo Drive 512GB SED (Z4/Z6 G4) SSD Kit HP Z Turbo Drive Quad Pro HP Z Turbo Drive Quad Pro 2x256GB PCIe SSD HP Z Turbo Drive Quad Pro 2x512GB PCIe SSD HP Z Turbo Drive Quad Pro 2x1TB PCIe SSD NOTE: Dual M.2 SSD modules plus the carrier. HP Z Turbo Drive Quad Pro 256GB SSD module HP Z Turbo Drive Quad Pro 512GB SSD module HP Z Turbo Drive Quad Pro 1TB SSD module NOTE: Z Turbo Drive Quad Pro modules require the Z4 G4 Fan and Front Card Kit, available as CTO. Z Turbo Drive Quad Pro modules are not supported on Core i7-X configurations. M.2 SSD module only that are designed to be installed into the Quad Pro carrier.
On-board RAID support	SATA RAID 0 Striped array configuration SATA RAID 1 Mirrored array configuration SATA RAID 1, 0 Striped/Mirrored configuration
Hard drive controllers	MicroSemi 2100-4i4e SAS Controller (Smart Host Bus Adapter) NOTE: Only available on Xeon W configurations.
HP Slim tray optical drives	HP 9.5mm Slim Blu Ray Disc Writer HP 9.5mm Slim DVD ROM HP 9.5mm Slim DVD Writer NOTE: Installing an optical drive into Z4 G4 requires a 13.33 cm (5.25 in) external bay adapter.
Card reader	HP SD 4 Card reader

NOTE:

For solid state drives or hard drives, GB = 1 billion bytes. TB = 1 trillion bytes. Actual formatted capacity is less. Up to 30 GB is reserved for system recovery software.

Memory

Specification	Description
DDR4-2666 registered DIMMs	HP 8GB (8 GB x 1) DDR4-2666 ECC Reg RAM 16 GB (8 GB x 2) DDR4-2666 ECC Reg RAM 24 GB (8 GB x 3) DDR4-2666 ECC Reg RAM 32 GB (8 GB x 4) DDR4-2666 ECC Reg RAM 64 GB (8 GB x 8) DDR4-2666 ECC Reg RAM 16 GB (16 GB x 1) DDR4-2666 ECC Reg RAM 32 GB (16 GB x 2) DDR4-2666 ECC Reg RAM 64 GB (16 GB x 4) DDR4-2666 ECC Reg RAM 128 GB (16 GB x 8) DDR4-2666 ECC Reg RAM 32 GB (32 GB x 1) DDR4-2666 ECC Reg RAM 64 GB (32 GB x 2) DDR4-2666 ECC Reg RAM 128 GB (32 GB x 4) DDR4-2666 ECC Reg RAM 256 GB (32 GB x 8) DDR4-2666 ECC Reg RAM HP 8GB (8 GB x 1) DDR4-2666 non-ECC Reg RAM HP 16GB (8 GB x 2) DDR4-2666 non-ECC Reg RAM HP 32GB (8 GB x 4) DDR4-2666 non-ECC Reg RAM HP 16GB (16 GB x 1) DDR4-2666 non-ECC Reg RAM HP 32GB (16 GB x 2) DDR4-2666 non-ECC Reg RAM HP 64GB (16 GB x 4) DDR4-2666 non-ECC Reg RAM HP 128GB (16 GB x 8) DDR4-2666 non-ECC Reg RAM
Maximum	Supports up to 256 GB with Xeon W configurations Supports up to 128 GB with Core X configurations NOTE: Maximum memory capacities assume 64-bit operating systems such as Windows 10 Pro 64-bit, Windows 7 Professional 64-bit.

NOTE:

The processor supports up to 4 channels of DDR4 memory. To realize full performance at least one DIMM must be inserted into each channel. The CPUs determine the speed at which the memory is clocked. If an 2400 MT/s capable CPU is used in the system, the maximum speed the memory runs at is 2400 MT/s, regardless of the specified speed of the memory.

Memory configurations using 32 GB DIMMs require the HP Z4 Memory Cooling Solution, which is available both as CTO and AMO.

DDR3 DIMMs are not supported.

Ports/slots/bays

Specifications	Description
Input/output ports	Front I/O (base) (4) USB 3.1 Gen 1 Type-A (1 charging) (1) Headset audio port Front I/O (optional) (1) Optional media card reader Front I/O (optional premium) (2) USB 3.1 Gen 1 Type-A connector (1 charging) (2) USB 3.1 Gen 2 Type-C connector (1) Headset headset (1) Power button with power/fault LED (1) Drive activity LED Internal I/O (1) USB 3.1 Gen 1 (aka USB 3.0) single-port header (1) USB 2.0 single-port header (1) USB 2.0 dual-port header Rear I/O (for Xeon W configurations) (6) USB 3.1 Gen 1 (aka USB 3.0) Type-A ports (2) 1 Gbe LAN ports (1x supporting Intel AMT) Rear I/O (for Core X configurations) (5) USB 3.1 Gen 1 (aka USB 3.0) Type-A ports (1) 1 Gbe LAN ports (1x supporting Intel AMT) Rear I/O (common) (1) Audio line-out (1) Audi line-in (line-in can be retasked as microphone) (1) PS/2 mouse (1) PS/2 keyboard (1) Rear power button (1) serial port (cable up to rear bulkhead)
Expansion slots	Slot 0 (mechanical only) Only for rear bulkhead mounting Slot 1 PCI Express Gen 3 x16 (from CPU) Slot 2 PCI Express Gen 3 x16 (from PCH) with open-ended connector Slot 3 (for Xeon W) PCI Express Gen 3 x16 (from CPU) Slot 3 (for Core i9-X) PCI Express Gen 3 x16 Slot 3 (for Core i7-X) PCI Express Gen 3 x16 (from CPU) mechanical PCI Express Gen 3 x8 (from CPU) electrical Slot 4 PCI Express Gen 3 x16 (from PCH) with open-ended connector Slot 5 PCI Express Gen 3 x8 (from CPU) Slot 5 (for Core i9-X) PCI Express Gen 3 x8 (from CPU) Slot 5 (for Core i7-X) PCI Express Gen 3 x8 (from CPU) mechanical M.2 Slot 1 M.2 PCIe Gen 3 x4 – CPU up to 80 mm (3.15 in) storage devices M.2 Slot 2 (for Xeon W) M.2 PCIe Gen 3 x4 – CPU up to 80 mm (3.15 in) storage devices M.2 Slot 2 (for Core X) M.2 connector/slot not available
Expansion bays	(2) Internal 8.89 cm (3.5 in) bays NOTE: Optional 6.35 cm (2.5 in) adapter available. (2) External 13.33 cm (5.25 in) bays (1) 9.5 mm (0.37 in) slim optical disk drive bay

Audio/multimedia

Feature	Description
Audio	Integrated Realtek HD ALC221 Audio

Keyboard and mouse/other hardware

Feature	Description
Keyboards and mouse	HP Wireless Business Slim Keyboard and Mouse HP PS/2 Slim Business Keyboard HP USB Slim Business Keyboard HP USB Premium Keyboard HP USB SmartCard CCID Keyboard 3Dconnexion CadMouse HP Optical USB Mouse HP PS/2 Mouse HP USB Hardened Mouse
Other hardware	HP Z Premium Front I/O 2xUSB-A 2xUSB-C HP Z4 G4 Memory Cooling Solution NOTE: The HP Z4 G4 Memory Cooling Solution is available to add to any configuration for improved system cooling, but is required for memory configurations using 32 GB DIMMs. HP Z4 G4 Fan and Front Card Guide Kit HP Internal USB Port Kit HP eSATA 2 port PCI Bulkhead Kit HP Serial Port Adapter HP Workstation mouse pad

Networking/communication

Feature	Description
Communications	HP i350-T2 PCIe Dual Port Gigabit NIC Intel i350-T4 PCIe 4-Port Gigabit NIC Intel Ethernet I210-T1 PCIe x1 Gb NIC Aquantia NBASE-T 5GbE PCIe NIC Intel X550-T2 10GbE Dual Port NIC Intel X710-DA2 10GbE SFP+ Dual Port NIC Intel 8265 802.11a/b/g/n/ac with Bluetooth PCIe WLAN HP 10GbE SFP+ SR Transceiver

Software/security

Specification	Description
Software	Sobey video editing software HP Remote Graphics Software
BIOS	Standard BIOS 32-bit Service Directory Proposal v0.4 PCI Local Bus specification, revision 2.3 PCI Power Management specification, revision 1.1 PCI Firmware specification, revision 3.0, draft .7 PCI Express Base specification, revision 2.0 PCI Express Base specification, revision 3.0 POST Memory Manager specification, version 1.01 ATAPI Removable Media Device BIOS specification version 1.0 WMI support BIOS Boot spec 1.01+ (disables the ability to boot from removable media on supported devices) UEFI 2.5 ACPI version 5.0 Enhanced Host Controller Interface for Universal Serial Bus, revision 1.0 LANDesk Management Suite (HP recommended solution) Microsoft System Center Configuration Manager HP Client Automation Enterprise
Security	Software Trusted Computing Group TPM specification version 2.0 Infineon SLB 9665 (Common Criteria EAL4+ certified) Remote wakeup/remote shutdown Memory change alert Thermal alert Hardware Security cable with Kensington lock (optional) HP Z4/Z6 Side panel barrel keylock HP Solenoid Lock/hood Sensor HP Z4/Z6 Depth Adjustable Fixed Rail Rack Kit HP Keyed Cable Lock 10 mm
Workstation ISV certifications	Go to the Workstation ISV certifications webpage to see current certifications

NOTE:

HP Cloud Recovery download tool (Cloud Recovery Client) is available under Software and Drivers section on the support page.

Power

Specifications	Description
Power supply	Entry 750 W/118 V/10 A 90% Efficient wide-ranging, active Power Factor Correction (PFC) High-End 465 W/118 V/6 A 90% Efficient wide-ranging, active Power Factor Correction (PFC)
Buttons	(1) Front power button and LED (1) Rear power button

Physical specifications

Specifications	Description
Dimensions (H x W x D)	38.61 x 16.89 x 44.45 cm (15.2 x 6.65 x 17.5 in)
Rack dimensions	4U
Weight	Minimum 10.2 kg (22.49 lb) Typical 11.3 kg (24.91 lb) Maximum 17.3 kg (38.14 lb) NOTE: Exact weights depend upon configuration.

Environmental specifications

Feature	Description
Certifications	US ENERGY STAR (select models only) Low Halogen NOTE: External power supplies, power cords, cables and peripherals are not low halogen. Service parts obtained after purchase might not be low halogen. US Federal Energy Management Program (FEMP) China Energy Conservation Program The ECO declaration (TED) EPEAT Gold registered where applicable (registration varies by country/region)
Temperature	Operating 5° to 35°C (41° to 95°F) Non-operating -40° to 60°C (40° to 140°F)
Humidity	Operating 10% to 85% (non-condensing, 35° C maximum wet bulb) Non-operating 10% to 90% (non-condensing, 35° C maximum wet bulb)
Altitude (unpressurized)	Operating 3,048 m (10000 ft) Non-operating 9,144 m (30000 ft)

Tech Nuggets How To Order

HP Z4 G4 Series Tower Workstation

HP Z4 G4 Workstation,Intel Xeon W2123 (3.6 GHz,upto 3.9GHz, 4 cores),16GB DDR4-2666, 1TB 7200 rpm, DVD, Windows 10 Pro