HP Z4 G4 Workstation (9LM42EA)

HP Z4 G4 Workstation (9LM42EA) All tech specs
Operating system

Windows 10 Pro for Workstations

Processor family

Intel® Xeon® W processor


Intel® Xeon® W-2235 (3.8 GHz base frequency, up to 4.6 GHz with Intel® Turbo Boost Technology, 8.25 MB L3 cache, 6 cores)[*,*] (Configurations with the Intel® Core™ X processors support only a subset of the full features of the Z4 G4 system, including, but not limited to: memory type and maximum memory, PCIe slot configurations, M.2 storage capacity, GbE interface and manageability features. Please refer to the product QuickSpecs for complete details.)


Intel® C422; Intel® X299[*,*]



NVIDIA® Quadro RTX™ 4000 (8 GB GDDR6 dedicated)


32 GB DDR4-2933 MHz ECC RAM (2 x 16 GB)

Memory Slots


Internal Storage

512 GB HP Z Turbo Drive PCIe® M.2 SSD

Additional storage

HP SD 4 Media Card Reader (optional)

Minimum dimensions (W x D x H)

38.6 x 16.9 x 44.5 cm


Starting at 10.2 kg (Exact weight depends on configuration.)

Software included

HP ProtectTools Security; ZCentral Remote Boost


HP USB Slim Business Keyboard

Pointing device

HP USB optical mouse

Expansion slots

1 PCIe 3 x16; 2 M.2 PCIe 3 x4


Front 1 headset connector; 4 USB 3.1 (1 charging)

Front (Premium version) 1 headset connector; 2 USB 3.1 Gen 2 Type-C™; 2 USB 3.1 Gen1 (1 charging)




Internal drive bays

Two 2.5" or 3.5"

External drive bays

Two 5.25"

Optical drive

9.5 mm Slim DVD-Writer


1000 W internal power supply, up to 90% efficiency, active PFC[*]

Security management

Full volume encryption; HP Keyed Cable Lock Kit; HP Secure Erase; HP Sure Start Gen3; Kensington lock slot; Secure authentication; TPM 2.0 certified; HP Device Access Manager; HP Sure Click; HP BIOSphere Gen3; HP Client Security Manager Gen3; HP MIK/SCCM Gen2; Self Encrypting Drive (SED)[*,*,*,*,*,*]

Sustainable impact specifications

Low halogen[*]

Manufacturer Warranty

On-site limited warranty and service with 3 year limited warranty and service offering delivers on-site, next business-day service for parts and labor and includes free telephone support 8 am - 5 pm. Global coverage ensures that any product purchased in one country and transferred to another, non-restricted country will remain fully covered under the original warranty and service offering. 24/7 operation will not void the HP warranty.