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Black mid-tower workstation chassis, front panel with power button and ports

HP

HP Z4 G4 Workstation Xeon W-2225 4.1GHz 128GB DDR4 500GB NVMe Quadro RTX 4000 8GB Win 11 Pro

SKU CH-93GS-B21PE

Mid-tower workstation with Xeon W-2225 4.1GHz, 128GB DDR4 2933 ECC memory, 500GB NVMe SSD and Quadro RTX 4000 8GB GDDR6 graphics for professional 3D and compute workloads

  • Screen sizeNo Screen
  • ProcessorIntel Xeon
  • RAM capacity128 GB DDR4
  • SSD storage500 GB pcie
  • GraphicsNVIDIA Quadro RTX 4000
  • Operating systemWindows 11 Pro
  • Intel Xeon W-2225 4.1 GHz (4.6 GHz Turbo) 4-core CPU drives compute-intensive workloads
  • 128 GB DDR4 2933 ECC registered memory handles large datasets reliably
  • 500 GB PCIe NVMe SSD provides fast system responsiveness
  • NVIDIA Quadro RTX 4000 8 GB GDDR6 with 3× DP 1.4 + USB-C powers professional graphics
  • 1000 W 80 Plus Gold 90 % efficient PSU supports expandable mid-tower configuration

HP Z4 G4 Xeon Workstation

The HP Z4 G4 is a mid-tower workstation built around an Intel Xeon W-2225 processor running at 4.1 GHz with a 4.6 GHz turbo frequency across four cores. It ships with 128 GB of DDR4 2933 ECC registered memory in a four-module configuration and a 500 GB PCIe NVMe solid-state drive. Windows 11 Pro is pre-installed for professional environments.

Memory and Storage Limits

The platform supports up to 512 GB of DDR4 2933 ECC memory, allowing expansion beyond the factory 128 GB. Internal bays and M.2 slots accept combinations of SATA and PCIe NVMe drives for additional capacity. The Nvidia Quadro RTX 4000 provides 8 GB of GDDR6 memory on a 256-bit bus and offers three DisplayPort 1.4 outputs plus one USB-C graphics connector.

Power Supply and Chassis Access

A 1000 W 80 Plus Gold power supply rated at 90 percent efficiency delivers stable power for the processor, memory and professional graphics card. The mid-tower chassis is designed for tool-less access to internal components and includes multiple PCIe slots for future upgrades. Integrated Gigabit Ethernet and high-definition audio are provided on the motherboard.

How it compares

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

Price $1,760.99
Cheaper than about 68% of the 2,161 comparable items (median $5,687.99).
RAM capacity 128 GB DDR4
Higher than about 60% of the 2,095 comparable items (median 64 GB).
SSD storage 500 GB pcie
Lower than about 90% 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 capacity128 GB DDR4
RAM type and speedDDR4 2933
Max supported RAM512 GB
Storage
SSD storage500 GB pcie
Display
Screen sizeNo Screen
Graphics
GraphicsNVIDIA Quadro RTX 4000
Size & build
Form factorMid Tower
In the box
Included monitorNot included
Software
Operating systemWindows 11 Pro

Questions about this item

Should I pick the 128GB DDR4 2933 kit or add more modules up to the 512GB maximum?

The system ships with 128GB as four 32GB DDR4 2933 ECC registered modules. Four slots remain free, so you can expand later to the 512GB ceiling if workloads grow.

What does the Xeon W-2225 4.1GHz base clock with 4.6GHz turbo mean for daily rendering?

The four-core Xeon W-2225 runs at 4.1GHz base and boosts to 4.6GHz under load, giving strong single-thread speed for CAD and responsive viewport performance in professional apps.

Will the Quadro RTX 4000 8GB GDDR6 256-bit drive my three DisplayPort 1.4 monitors and the USB-C display simultaneously?

The card provides three DisplayPort 1.4 outputs and one USB-C connector, all active at once, so four professional displays are supported directly from the GPU.

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