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Black mid-tower desktop workstation with matte finish

HP

HP Z2 G4 Mid-Tower Workstation i5-9500 128GB DDR4 4TB NVMe Windows 11 Pro

SKU CH-PMPK-93JK2

Mid-tower workstation with a 6-core Intel Core i5-9500, 128 GB DDR4 memory, 4 TB NVMe SSD and Windows 11 Pro

  • Screen sizeNo Screen
  • ProcessorIntel Core i5
  • RAM capacity128 GB DDR4
  • SSD storage4 TB PCIe
  • GraphicsIntel HD Graphics 630
  • CPU modelIntel Core i5-9500
  • 6-core Intel i5-9500 reaches 4.4 GHz turbo for responsive multitasking
  • 128 GB DDR4 2666 MHz memory handles large datasets without swapping
  • 4 TB NVMe SSD stores massive projects and boots in seconds
  • Dual DisplayPort on Intel UHD 630 drives two monitors from integrated graphics
  • 500 W 90 % efficient power supply delivers stable energy for sustained workloads

Workstation with 128GB DDR4

The HP Z2 G4 Mid-Tower Workstation is built for professionals who need a high-memory desktop for data analysis, virtualization, or multi-application workflows. It ships with a 6-core Intel Core i5-9500 processor and 128GB of DDR4 2666MHz memory installed across four slots. A 4TB NVMe solid-state drive provides the primary storage. Windows 11 Pro is pre-installed and digitally activated.

Sustained load with 500W supply

The integrated 500W power supply operates at 90% efficiency to support continuous operation of the CPU, memory, and NVMe storage during extended rendering or compilation tasks. The Intel Core i5-9500 maintains a 3.0GHz base frequency with a 4.4GHz turbo boost across its six cores under load. Intel HD Graphics 630 handles dual-display output through integrated DisplayPort connections without a discrete graphics card.

128GB maximum memory limit

This system arrives with the maximum supported memory of 128GB already installed in its four DDR4 slots. Buyers who need more than 128GB of RAM cannot expand this unit further and should consider a platform with a higher memory ceiling. The LGA 1151 socket and chipset define this hard limit for the Z2 G4 chassis.

How it compares

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

Price $1,483.99
Pricier than about 88% 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 i5
CPU modelIntel Core i5-9500
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
GraphicsIntel HD Graphics 630
Size & build
Form factorMid Tower
In the box
Included monitorNot included
Software
Operating systemWindows 11 Pro

Questions about this item

How much heat and power does the 500 W 90% efficient supply draw when the i5-9500 runs at 4.4 GHz Turbo all day?

The 500 W unit is rated at 90% efficiency, so sustained full-load draw stays within that envelope while the six-core processor operates at its 4.4 GHz Turbo frequency.

Which display cables must I already own to use the integrated Intel UHD Graphics 630 Dual DisplayPort outputs?

You need two DisplayPort cables; the graphics provide dual DisplayPort connectors and no HDMI or DVI ports are present on this configuration.

Will my existing DDR4 2666 modules work alongside the four 32 GB sticks already installed?

The board accepts DDR4 2666 unbuffered memory up to 128 GB total; the four slots are already populated with 4×32 GB, so no further modules can be added.

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