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Black mid-tower workstation chassis with front I/O panel and side venting

HP

HP Z4 G4 Mid-Tower Workstation Xeon W-2235 256GB DDR4 4TB NVMe RTX 5000 16GB Windows 11 Pro

SKU CH-HKPJ-HHD1Q

Mid-tower workstation with Xeon W-2235 6-core processor, 256GB DDR4 ECC memory, 4TB NVMe SSD and RTX 5000 16GB graphics

  • Screen sizeNo Screen
  • ProcessorIntel Xeon
  • RAM capacity256 GB DDR4
  • SSD storage4 TB PCIe
  • GraphicsNVIDIA Quadro RTX 5000
  • Operating systemWindows 11 Pro
  • Intel Xeon W-2235 6-core processor reaches 4.6GHz turbo for compute-intensive workloads
  • 256GB DDR4 2933 ECC registered memory handles large datasets with error correction
  • 4TB NVMe SSD provides fast system responsiveness and high-capacity project storage
  • NVIDIA Quadro RTX 5000 16GB GDDR6 graphics certified for 3D CAD and rendering
  • 1000W 80 Plus Gold power supply delivers 90% efficient power for expandable configurations

Workstation for Demanding Professional Workflows

The HP Z4 G4 is a mid-tower business desktop built for compute-intensive applications. It ships with an Intel Xeon W-2235 processor, 256GB of DDR4 2933 ECC registered memory and an Nvidia Quadro RTX 5000 graphics adapter with 16GB GDDR6. Windows 11 Pro is pre-installed and digitally activated.

Memory Capacity and Storage Headroom

The system provides 256GB of DDR4 2933 ECC memory across eight 32GB modules, with the platform supporting up to 512GB for larger datasets. A 4TB M.2 NVMe solid-state drive delivers fast system responsiveness and high-capacity project storage. Internal bays and additional M.2 slots allow further expansion with SATA or PCIe NVMe drives.

Thermals Noise and Power Delivery

A 1000W 80 Plus Gold power supply rated at 90% efficiency delivers stable power to the Xeon processor and RTX 5000 graphics card. The mid-tower chassis is engineered for professional reliability with toolless access to internal components. Integrated Gigabit Ethernet and high-definition audio handle connectivity without add-in cards.

How it compares

Measured against everything we stock in Business & Office Desktops, at today’s prices. Recalculated every night.

Price $3,864.99
Cheaper than about 59% of the 2,161 comparable items (median $5,687.99).
RAM capacity 256 GB DDR4
Higher than about 90% of the 2,095 comparable items (median 64 GB).
SSD storage 4 TB PCIe
Higher than about 70% of the 2,058 comparable items (median 2 TB).

Specifications

Product
Product lineZ4
Model nameG4
Product typeBusiness Desktops & Workstations
Recommended useBusiness
Product colorBlack
Processor
ProcessorIntel Xeon
CPU socketLGA 2066
Memory
RAM capacity256 GB DDR4
RAM type and speedDDR4 2933
Max supported RAM512 GB
Storage
SSD storage4 TB PCIe
Display
Screen sizeNo Screen
Graphics
GraphicsNVIDIA Quadro RTX 5000
Size & build
Form factorMid Tower
In the box
Included monitorNot included
Software
Operating systemWindows 11 Pro

Questions about this item

Will my existing DDR4 2933 ECC registered modules work with the 8x 32GB configuration already installed?

The workstation ships with 256GB across eight 32GB DDR4 2933 ECC registered DIMMs. The board supports up to 512GB, so matching modules can be added to the remaining slots.

How can I verify the Quadro RTX 5000 16GB is running at full PCIe bandwidth after installation?

Open GPU-Z or NVIDIA Control Panel and confirm the bus interface shows x16 Gen 3 or higher with 16GB GDDR6 detected and all four DisplayPort 1.4 outputs active.

Which cables and adapters are included for the 4TB NVMe drive and the RTX 5000 graphics card?

The 4TB M.2 NVMe SSD is pre-installed. The RTX 5000 includes four DisplayPort 1.4 connectors and a VirtualLink port; no video cables or drive brackets are supplied.

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