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Black mid-tower workstation chassis, matte finish, front I/O panel visible

HP

HP Z4 G4 Workstation Xeon W-2225 16GB 500GB NVMe Quadro RTX 4000 8GB Windows 11 Pro

SKU CH-9R83-PKA0B

Mid-tower workstation with Intel Xeon W-2225 4.1GHz 4-core CPU, 16GB DDR4 ECC memory, 500GB NVMe SSD and Nvidia Quadro RTX 4000 8GB graphics running Windows 11 Pro

  • Screen sizeNo Screen
  • ProcessorIntel Xeon
  • RAM capacity16 GB DDR4
  • SSD storage500 GB pcie
  • GraphicsNVIDIA Quadro RTX 4000
  • Operating systemWindows 11 Pro
  • Intel Xeon W-2225 4-core CPU reaches 4.6 GHz turbo for fast compute
  • 16 GB DDR4 2933 MHz ECC memory ensures data integrity under load
  • 500 GB NVMe SSD delivers rapid boot and project loading
  • Nvidia Quadro RTX 4000 8 GB GDDR6 drives certified 3D and render workflows
  • 1000 W 80 Plus Gold 90 % efficient PSU powers expansion reliably

Single-processor Xeon workstation

The HP Z4 G4 uses an Intel Xeon W-2225 running at 4.1 GHz with a 4.6 GHz turbo frequency across four cores. Sixteen gigabytes of DDR4 2933 ECC registered memory and a 500 GB NVMe drive provide fast, reliable throughput for large datasets. Windows 11 Pro 64-bit is pre-installed and digitally activated.

Sustained load behaviour

A 1000 W power supply rated at 90 percent efficiency delivers stable current during long renders or simulations. The Xeon processor and Quadro RTX 4000 share this headroom so clock speeds hold under continuous multi-threaded demand. ECC memory corrects single-bit errors without interrupting the workload.

Tool-less mid-tower chassis

The mid-tower frame opens without tools for memory, storage or card upgrades. Quadro RTX 4000 adds 8 GB GDDR6 on a 256-bit bus and drives up to four panels through three DisplayPort 1.4 connectors plus one USB-C port. Integrated gigabit Ethernet and high-definition audio handle networking and sound without extra cards.

How it compares

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

Price $645.99
Cheaper than about 78% of the 2,161 comparable items (median $5,687.99).
RAM capacity 16 GB DDR4
Lower than about 80% 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 capacity16 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 does the 1000W 80 Plus Gold power supply run when the Xeon W-2225 hits 4.6GHz Turbo all day?

The 1000W 80 Plus Gold unit is rated 90% efficient, so it generates less waste heat and the fan stays at lower RPM under sustained 4.6GHz loads.

Which display cables do I need for the Quadro RTX 4000's 3x DP 1.4 and 1x USB-C ports?

The card provides three DisplayPort 1.4 outputs and one USB-C connector; bring matching DP or USB-C cables for each monitor you plan to attach.

Can my existing DDR4 2933 ECC modules fill the remaining slots up to the 512GB ceiling?

Yes, the board supports up to 512GB of DDR4 2933 ECC Registered memory, so compatible modules you already own can populate the free DIMM slots.

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