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Black mid-tower workstation with front panel vents and HP branding

HP

HP Z4 G4 Workstation Xeon W-2225 4.1GHz 32GB DDR4 500GB NVMe RTX 4000 8GB Win 11 Pro

SKU CH-ACRQ-ZKBN3

Mid-tower workstation with Xeon W-2225 4.1 GHz, 32 GB DDR4 2933 ECC, 500 GB NVMe SSD and Quadro RTX 4000 8 GB for professional 3D and compute workloads

  • Screen sizeNo Screen
  • ProcessorIntel Xeon
  • RAM capacity32 GB DDR4
  • SSD storage500 GB pcie
  • GraphicsNVIDIA Quadro RTX 4000
  • Operating systemWindows 11 Pro
  • Intel Xeon W-2225 4.1GHz (4.6GHz Turbo) 4-core processor accelerates compute-intensive workloads
  • 32GB DDR4 2933MHz ECC registered memory ensures reliable performance for large datasets
  • 500GB M.2 NVMe SSD delivers fast system responsiveness and project storage
  • Nvidia Quadro RTX 4000 8GB GDDR6 graphics certified for professional 3D CAD and rendering
  • HP 1000W 80 Plus Gold 90% efficient power supply supports expandable configurations

Professional Workstation Platform

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 32GB of DDR4 2933 ECC registered memory in a four-module configuration and a 500GB PCIe NVMe solid-state drive. An Nvidia Quadro RTX 4000 graphics card with 8GB GDDR6 memory provides certified visual computing for professional applications.

Sustained Compute Performance

The four-core Xeon W-2225 maintains elevated clock speeds during prolonged workloads thanks to the workstation-class thermal solution and a 1000W 80 Plus Gold power supply rated at 90% efficiency. The 512GB maximum memory capacity across eight slots allows future expansion for larger datasets. ISV certification ensures stability in certified professional applications over extended rendering or simulation sessions.

Thermal Management And Power

The 1000W Gold-rated supply delivers efficient power conversion for the CPU, Quadro RTX 4000 graphics and all installed peripherals under typical professional loads. The mid-tower chassis uses directed airflow paths to cool the processor and graphics card without requiring liquid cooling. Integrated Gigabit Ethernet and high-definition audio operate within the standard thermal envelope of the platform.

How it compares

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

Price $799.99
Cheaper than about 76% of the 2,161 comparable items (median $5,687.99).
RAM capacity 32 GB DDR4
Lower than about 70% 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 capacity32 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

How loud and hot does the 1000W 80 Plus Gold power supply run when the Xeon W-2225 and RTX 4000 are under sustained load all day?

The 1000W 80 Plus Gold unit is rated at 90% efficiency, so less input power becomes waste heat; the mid-tower chassis uses ducted airflow to move that heat across the CPU and GPU heatsinks, keeping fan speeds lower than a lesser supply would require.

Which display cables and monitors must I already own to use the Quadro RTX 4000's three DisplayPort 1.4 and one USB-C outputs?

You need monitors with DisplayPort 1.4 or USB-C inputs and matching cables; the card drives up to four 4K panels simultaneously, so four compatible cables are required for a full four-display setup.

Will my existing DDR4 2933 ECC registered modules work alongside the four 8GB sticks already installed in the eight DIMM slots?

Yes — the board supports up to 512GB of DDR4 2933 ECC registered memory across eight slots, so your current modules can be added to the four populated slots as long as they match the same speed and ECC registered specification.

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