HP Z400 review: specs, options & used prices

What this machine is

The HP Z400 is a workstation desktop, and on the used market it is one of the straightforward ways to get a complete, serviceable computer for a modest sum.

Workstation lines exist for sustained professional loads: server-derived CPU options, high memory ceilings, and a chassis designed to run all day rather than all morning.

Across 3 tracked listings, the median asking price is $190.

Configurations you will actually see

The CPU options we track for the Z400 are the Xeon W-3520 and Xeon W-3680. Xeon-branded options are server-derived silicon aimed at sustained, multi-user loads; check the exact model number in each listing.

Memory options run from 6 GB to 24 GB (6 GB, 16 GB, 24 GB). For a current operating system, treat anything below 8 GB as a first upgrade, not a final configuration.

Workstation notes

Workstation configurations target engineering, CAD, rendering and virtualisation workloads that run for hours, not minutes.

Expect higher idle draw and more fan noise than office small-form-factor machines; these were designed to be worked, not to whisper.

Who it fits

It fits engineering, CAD, rendering and pro-workstation roles on a budget — as long as the software tolerates the age of the platform.

Full specifications, current options and tracked prices live on its spec sheet; the desktop catalog and the HP desktops page help place it among the alternatives.

Verdict

The case for the Z400 is simple: standard parts, predictable supply, and a price that leaves room in the budget for upgrades.

Buy it when you need a cheap, repairable machine for its class of work, and verify the configuration before paying — RAM and storage vary widely between listings. Tracked prices span $120 to $249, and most of that spread is configuration, not condition.

Our composite LB Score currently sits at 14/100 — a score that mostly reflects the platform age — use it to compare like with like, not against modern hardware.