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Black mid-tower workstation chassis with front panel visible

HP

HP Z2 G4 Mid-Tower Workstation i9-9900K 128GB DDR4 4TB NVMe Quadro P600 Windows 11 Pro

SKU CH-9XXD-EP7M6

Mid-tower workstation with an 8-core 3.6 GHz i9, 128 GB DDR4 2666 memory, 4 TB NVMe storage and a Quadro P600 2 GB GDDR5 card, running Windows 11 Pro

  • Screen sizeNo Screen
  • ProcessorIntel Core i9
  • RAM capacity128 GB DDR4
  • SSD storage4 TB PCIe
  • GraphicsNVIDIA Quadro P600
  • CPU modelIntel Core i9-9900K
  • 8-core i9-9900K reaches 5.0 GHz turbo for fast compute
  • 128 GB DDR4 2666 MHz handles large datasets without swapping
  • 4 TB NVMe SSD loads projects and boots in seconds
  • Quadro P600 2 GB GDDR5 drives four 1.4 displays
  • 500 W 90 % efficient PSU delivers stable power to all components

Workstation for professional workloads

The HP Z2 G4 Mid-Tower delivers workstation-class performance with an Intel Core i9-9900K 8-core processor reaching 5.0GHz turbo. 128GB DDR4 2666MHz memory and a 4TB NVMe SSD provide capacity for large datasets. NVIDIA Quadro P600 2GB GDDR5 graphics drive up to four displays via mDP 1.4. Windows 11 Pro 64-bit is pre-installed and digitally activated.

Quadro P600 enables multi-display workflows

The included NVIDIA Quadro P600 adds four mini DisplayPort 1.4 outputs for professional multi-monitor setups. 2GB GDDR5 memory supports hardware-accelerated viewport performance in certified applications. Integrated Intel I219-LM Gigabit Ethernet and 5.1 high-definition audio complete the I/O without extra cards. The 500W 90% efficient power supply runs the configured components.

128GB DDR4 2666MHz memory ceiling

This unit arrives with the maximum supported 128GB DDR4 2666MHz configuration across four 32GB unbuffered modules. No further memory expansion is possible without replacing existing DIMMs. Buyers who need more than 128GB system memory must select a different platform. The LGA 1151 socket and Z2 G4 chassis define the upgrade boundary.

How it compares

Measured against everything we stock in Tower & Compact Desktop PCs, at today’s prices. Recalculated every night.

Price $1,789.99
Pricier than about 90% of the 14,711 comparable items (median $494.99).
RAM capacity 128 GB DDR4
Higher than about 91% of the 13,125 comparable items (median 16 GB).
SSD storage 4 TB PCIe
Higher than about 91% of the 11,342 comparable items (median 512 GB).

Specifications

Product
Product lineZ2
Model nameG4
Product typeBusiness Desktops & Workstations
Recommended useBusiness
Product colorBlack
Processor
ProcessorIntel Core i9
CPU modelIntel Core i9-9900K
CPU socketLGA 1151
Memory
RAM capacity128 GB DDR4
RAM type and speedDDR4 2666
Max supported RAM128 GB
Storage
SSD storage4 TB PCIe
Hard driveNo
Display
Screen sizeNo Screen
Graphics
GraphicsNVIDIA Quadro P600
Size & build
Form factorMid Tower
In the box
Included monitorNot included
Software
Operating systemWindows 11 Pro

Questions about this item

Will the 500 W power supply need replacement if I add more drives or a larger GPU?

The included 500 W unit is rated at 90 % efficiency and powers the i9-9900K, Quadro P600 and 4 TB NVMe SSD as configured; adding components that raise total draw above 500 W would require a higher-capacity PSU.

What thermal limit appears first when the i9-9900K runs at 5.0 GHz turbo across all 8 cores for long periods?

The CPU can reach its 5.0 GHz turbo frequency, but sustained all-core loads at that speed are constrained by the mid-tower cooler and 500 W power budget, so thermal throttling or power limiting will engage before the GPU or memory become bottlenecks.

How loud and hot does the workstation get when the Quadro P600 and i9-9900K run all day?

The 500 W 90 % efficient supply and mid-tower chassis keep noise moderate; under continuous load the i9-9900K and Quadro P600 2 GB GDDR5 generate noticeable heat, so expect warm exhaust and audible fan ramp-up during extended render or compute sessions.

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