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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

  • ProcessorIntel Xeon
  • Installed RAM16 GB
  • Video RAM4 GB
  • Installed SSD1 TB
  • Chipset465 W
  • Type of memoryDDR4

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.

How it compares

Measured against everything we stock in Desktop Workstation Computers, at today’s prices. Recalculated every night.

Price $443.99
Cheaper than about 91% of the 1,534 comparable items (median $2,906.49).
Installed RAM 16 GB
Lower than about 96% of the 1,387 comparable items (median 128 GB).
Video RAM 4 GB
Lower than about 70% of the 160 comparable items (median 8 GB).

Specifications

Product
Brand nameHP
Product lineZ Series
Model nameZ4 G4
Product typeTower
Processor
ProcessorIntel Xeon
Chipset465 W
Max supported CPUs1
Memory
Installed RAM16 GB
Type of memoryDDR4
Maximum RAM capacity16 GB
Memory slot count8
Storage
Installed SSD1 TB
Supported RAID levelsRAID 0/1/5/10
Maximum storage1
Optical driveDVD +/- RW
Graphics
Video RAM4 GB
Graphics chipNVIDIA Quadro P1000
Ports & slots
Network ports2 x Ports
Expansion card 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 80 mm storage devices
Power
Hot-swap redundant PSUNo
Size & build
Product weight45 lb (20.4 kg)
Software
Operating systemWindows 11 Pro

Other versions of this model

5 more in the same range

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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