HP Z4 G4 Workstation Tower - Xeon 6-Core, 64GB Memory

Our review of the HP Z4 G4 Workstation finds a purpose-built desktop for professionals who need sustained compute power rather than ultraportability. This tower centers on an Intel Xeon W-2133 6-core processor and a large 64GB DDR4 memory pool, which together make it well suited to rendering, simulation and data-heavy engineering workflows. The single biggest reason to consider this system is its balanced combination of a fast NVMe boot drive, roomy 2TB storage, and a professional Nvidia Quadro P400 GPU - a configuration that prioritizes reliability and expandability over flash consumer styling.

Key Features

• Xeon W-2133 6-core: Delivers consistent multi-threaded performance for compute tasks, simulations and complex builds without aggressive thermal throttling.
• 64GB DDR4 memory: Large memory capacity lets users keep multiple large datasets, virtual machines or complex project files open simultaneously with minimal swapping.
• 512GB NVMe M.2 SSD: Fast NVMe boot and application drive that reduces load and project open times compared with traditional drives.
• 2TB HDD storage: Provides ample on-device capacity for archival project files, media libraries and local backups without immediate need for external drives.
• Nvidia Quadro P400 2GB: A workstation-class GPU with three mini DisplayPort outputs, tuned for stability in CAD and professional visualization applications.
• Windows 11 Pro 64-bit (renewed): Familiar workstation OS with professional features like BitLocker and domain join for workplace integration.

Who It's For

The HP Z4 G4 is aimed at engineers, 3D artists, data analysts and professionals who need a desktop that can run multi-threaded compute jobs and render tasks reliably. The combination of a Xeon processor and 64GB of RAM makes it especially useful for CAD assemblies, medium-scale render farms, and machine learning experimentation that benefit from large memory and CPU cores.

It is less appropriate for users who require a high-end GPU for VR or very large GPU compute workloads, since the Quadro P400 is entry-level for graphics-accelerated tasks. Casual users who want a thin, silent or portable machine should also look elsewhere; this is a performance-focused tower intended for a desktop environment.

Pros & Cons

Pros

• Plenty of system memory and Xeon multi-core CPU provide steady performance for heavy multitasking and compute jobs.
• Fast NVMe boot drive reduces OS and application load times while the 2TB HDD handles bulk storage affordably.
• Workstation-grade Quadro GPU and three display outputs improve compatibility and stability with professional apps.
• Windows 11 Pro offers workplace features useful to IT-managed environments.

Cons

• The Quadro P400 is modest in GPU memory and compute power, so very GPU-intensive workloads may be limited.
• As a renewed unit, it may not include the original packaging or have the same warranty length as new systems.

Specifications

Model	HP Z4 G4 Workstation Tower
Processor	Intel Xeon W-2133 6-Core (3.6GHz, up to 3.9GHz Turbo)
Memory	64GB DDR4
Primary Storage	512GB NVMe M.2 SSD (boot)
Secondary Storage	2TB HDD
Graphics	Nvidia Quadro P400 2GB (3x Mini DisplayPort)
Operating System	Windows 11 Pro 64-bit (Renewed)

Our Verdict

The HP Z4 G4 is a sensible value for professionals who need dependable CPU performance, large memory capacity and fast local storage in a desktop tower. It is a good buy for CAD users, engineers and content creators who prioritize stability and expandability; however, those requiring high-end GPU acceleration or a portable workstation should evaluate alternatives with stronger graphics or mobile form factors.

Frequently Asked Questions

Is this workstation suitable for CAD and rendering?
Yes, the Xeon processor and 64GB of RAM handle CAD and many rendering tasks well, though very GPU-heavy renders will be limited by the Quadro P400's 2GB of memory.

Can the storage be expanded?
Yes, the system includes both an NVMe M.2 boot drive and a 2TB HDD, and the tower design allows additional drives to be added for more capacity.

Does it come with Windows 11 Pro?
Yes, this renewed unit ships with Windows 11 Pro 64-bit installed.