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HP Z4 G4 tower workstation, silver finish, front panel with DVD drive bay

HP

HP Z4 G4 CAD Workstation Xeon W-2135 3.7GHz 16GB DDR4 1TB NVMe Quadro P1000 Windows 11

SKU CH-ZZKR-67S9T

Tower workstation with a 3.7GHz Xeon W-2135, 16GB DDR4, 1TB NVMe, and Quadro P1000 for CAD and rendering

  • TypeTower
  • Redundant Hot-swap PowerNo
  • CPU TypeIntel Xeon
  • MAX Processors1
  • Chipset465W
  • Installed Memory Size16GB

Installed Memory Size 16GB

SSD (Installed) 1TB

HDD None

  • 6-core Xeon W-2135 at 3.7GHz powers professional CAD and rendering workloads
  • 16GB DDR4 ECC memory with four-channel architecture supports smooth multitasking on large projects
  • 1TB NVMe SSD delivers fast application and file access for daily professional use
  • Quadro P1000 with 4GB GDDR5 drives multi-display CAD, content creation and rendering
  • Windows 11 pre-installed for immediate out-of-box setup and productivity

Professional CAD workstation

The HP Z4 G4 tower delivers a six-core Xeon W-2135 processor at 3.7GHz with 16GB of DDR4 ECC memory. A 1TB NVMe drive holds the operating system and active project files. The NVIDIA Quadro P1000 with 4GB GDDR5 drives professional visual applications and multi-display workflows. Windows 11 is preinstalled for immediate deployment.

Thermals and power profile

A 465W power supply feeds the single-socket platform without redundant hot-swap capability. The tower chassis uses acoustic dampening rails on the internal 3.5-inch bays to reduce vibration from spinning drives. Dual LAN ports handle network traffic without adding significant thermal load. Typical office workloads keep fan noise at a low, consistent level.

Build and connectivity

Eight DIMM slots support four-channel DDR4 up to 2666MHz, although the installed configuration reaches a 16GB limit. Expansion includes two internal 3.5-inch bays, two external 5.25-inch bays and a dedicated 9.5mm slim optical bay. The Quadro P1000 provides four Mini DP 1.4 outputs. Front and rear ports cover USB 2.0, USB 3.1 Gen 1 and Gen 2, with optional Thunderbolt 3. Buyers needing more than 16GB memory or additional GPU power connectors should verify upgrade paths before purchase.

Highlights

  • 6-core Xeon W-2135 at 3.7GHz powers professional CAD and rendering workloads
  • 16GB DDR4 ECC memory with four-channel architecture supports smooth multitasking on large projects
  • 1TB NVMe SSD delivers fast application and file access for daily professional use
  • Quadro P1000 with 4GB GDDR5 drives multi-display CAD, content creation and rendering
  • Windows 11 pre-installed for immediate out-of-box setup and productivity

Specifications

BrandHP
SeriesZ Series
ModelZ4 G4
TypeTower
Redundant Hot-swap PowerNo
CPU TypeIntel Xeon
MAX Processors1
Chipset465W
Installed Memory Size16GB
Memory TypeDDR4
Max Memory Capacity16GB
Memory FeaturesFour channel memory up to 2666MHz DDR4 ECC memory, 2 DIMMs per Channel, 8 DIMM Slots.
Number of Memory Slots8
SSD (Installed)1TB
Raid LevelRAID 0/1/5/10
Max HDD Capacity1
Media DrivesDVD +/- RW
GPU TypeNVIDIA Quadro P1000
Video Memory4GB
LAN Ports2 x Ports
Expansion SlotsSlot 1: PCI Express Gen3 x16 (from CPU), Slot 2: PCI Express Gen3 x4 (from PCH) with open-ended connector*, Slot 3: PCI Express Gen3 x16 (from CPU), Slot 4: PCI Express Gen3 x4 (from PCH) with open-ended connector*, Slot 5: PCI Express Gen3 x8 (from CPU) with open-ended
connector*, , and M.2 Slot 1: M.2 PCIe Gen 3 x4 (from CPU) up to 80mm storage devices
Operating SystemWindows 11 Pro
Weight45.0000LBS

Other versions of this model

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Questions about this item

How do I install extra DDR4 ECC memory in the eight DIMM slots and which step do people get wrong?

Populate the four-channel DDR4 slots in matched pairs per channel up to the 512 GB maximum using 2666 MHz ECC modules; the common mistake is mixing capacities or leaving a channel half-filled, which disables quad-channel bandwidth.

What maintenance or replacement will the NVIDIA Quadro P1000 4 GB GDDR5 card need later?

The Quadro P1000 is a discrete PCIe card, so the only likely service is cleaning its heatsink or swapping the card itself if a future workload demands more than 4 GB of video memory.

What limit appears first when the Xeon W-2135 runs sustained multi-core loads?

The six-core Xeon W-2135 will reach its thermal ceiling before the 465 W power supply saturates, so the firmware reduces clock speeds to stay within the processor's thermal envelope.

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