HP Z4 G4 Workstation Xeon W-2235 3.8GHz 16GB DDR4 1TB NVMe RTX 5000 16GB Windows 11 Pro

HP Z4 G4 Xeon Workstation

The HP Z4 G4 is a mid-tower workstation built around an Intel Xeon W-2235 six-core processor running at 3.8GHz with a 4.6GHz turbo frequency. It ships with 16GB of DDR4 2933MHz ECC registered memory in a dual-channel configuration. A 1TB PCIe NVMe solid-state drive provides the primary boot and application volume. The Nvidia Quadro RTX 5000 graphics card adds 16GB of GDDR6 memory on a 256-bit bus and four DisplayPort 1.4 outputs plus VirtualLink. A 1000W 80 Plus Gold power supply and Windows 11 Pro complete the platform.

Upgrading from consumer desktops

This system replaces consumer desktops that lack ECC memory support, certified driver stacks, or the PCIe bandwidth needed for professional GPU compute. The jump is worth it when workloads such as 3D CAD, rendering, or GPU-accelerated simulation demand ISV-certified stability and the 16GB GDDR6 frame buffer on the Quadro RTX 5000. Builders who need more than 512GB of total system memory or a second full-size GPU should look elsewhere because the single-processor design and chassis layout limit those expansions.

Verify power, memory slots

Confirm that your facility can deliver adequate cooling for a 1000W power supply in a mid-tower form factor. The motherboard uses an LGA 2066 socket and offers eight DDR4 DIMM slots, so plan any memory expansion around the existing 2x 8GB ECC registered modules. Check available M.2 and 2.5-inch bays if you intend to add SATA or additional NVMe storage beyond the factory 1TB drive. Ensure your display cables match the four DisplayPort 1.4 connectors on the graphics card.