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Black mid-tower workstation chassis, plain front panel with subtle HP branding

HP

HP Z4 G4 Business Desktop Xeon W-2225 64GB DDR4 4TB NVMe RTX 5000 16GB

SKU CH-A8J5-5JFSN

Mid-tower workstation with Xeon W-2225 4.1 GHz processor, 64 GB DDR4 ECC memory, 4 TB NVMe SSD and Nvidia Quadro RTX 5000 16 GB graphics for professional compute workloads

  • Screen sizeNo Screen
  • ProcessorIntel Xeon
  • RAM capacity64 GB DDR4
  • SSD storage4 TB PCIe
  • GraphicsNVIDIA Quadro RTX 5000
  • Operating systemWindows 11 Pro
  • Intel Xeon W-2225 at 4.1 GHz base and 4.6 GHz turbo drives compute-heavy workloads
  • 64 GB DDR4-2933 ECC memory handles large datasets with error correction
  • 4 TB NVMe SSD provides fast system responsiveness and high-capacity project storage
  • NVIDIA Quadro RTX 5000 with 16 GB GDDR6 delivers certified performance for 3D CAD and rendering
  • 1000 W 80 Plus Gold power supply runs at 90 % efficiency for reliable operation

Professional single-processor workstation

The HP Z4 G4 is a mid-tower business desktop built around an Intel Xeon W-2225 processor running at 4.1GHz with a 4.6GHz turbo frequency across four cores. It ships with 64GB of DDR4 2933 ECC registered memory in a four-module configuration and a 4TB PCIe NVMe solid-state drive. Windows 11 Pro is pre-installed for immediate deployment.

Sustained compute and GPU acceleration

The Nvidia Quadro RTX 5000 provides 16GB of GDDR6 memory on a 256-bit bus and four DisplayPort 1.4 outputs plus VirtualLink for professional visualisation. ISV certification ensures stable performance in 3D CAD, rendering and GPU-accelerated workloads over long sessions. The platform supports up to 512GB of DDR42933 ECC SDRAM for datasets that exceed the factory configuration.

Thermals noise and power efficiency

A 1000W 80 Plus Gold power supply rated at 90% efficiency delivers headroom for the CPU and graphics card under continuous load. Tool-less internal access simplifies maintenance and airflow management during extended operation. Integrated Gigabit Ethernet and high-definition audio handle connectivity without additional expansion cards.

How it compares

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

Price $1,892.99
Cheaper than about 68% of the 2,161 comparable items (median $5,687.99).
RAM capacity 64 GB DDR4
Typical for this category: the median of 2,095 items is 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 capacity64 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

How loud does the 1000W 80 Plus Gold power supply run under sustained load?

The 1000W 80 Plus Gold unit operates at 90% efficiency, reducing waste heat and keeping fan speeds lower during long render jobs.

Which display connectors must my monitors provide for the Quadro RTX 5000?

The card offers four DisplayPort 1.4 outputs and one VirtualLink port, so each monitor needs a DP 1.4 input or a USB-C alt-mode adapter.

Will my existing DDR4 2933 ECC registered modules work alongside the installed 64GB kit?

Yes, the four populated slots use DDR4 2933 ECC registered DIMMs; any matching spec modules can fill the remaining slots up to 512GB total.

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