HP Z240 Workstation
The HP Z240 is an entry workstation on Xeon E3-1200 v5/v6 or 6th/7th-gen Core — ISV-certified basics in tower or SFF form at desktop-level prices.
HP Z240 Tower Workstation — Refurbished Entry Workstations
The Z240 is HP’s entry Z-series tower: a single LGA-1151 socket on the C236 chipset, four DDR4 slots, a 92%-efficient 400 W supply and a chassis you can open without tools. It is deliberately modest hardware — and that is the point. For a CAD seat, a control-room PC, a lab machine, a point-of-sale back office or a first workstation, a refurbished Z240 costs less than a new consumer desktop and is built to a far higher standard. Every unit is configured, tested and shipped with a free 1-year warranty on parts, labor and shipping.
HP Z240 Tower Specs
| Form factor | Minitower — 399 × 170 × 442 mm (15.7 × 6.7 × 17.4 in), 19–26 lb |
|---|---|
| Socket / chipset | Single LGA-1151, Intel C236 |
| Processors | Intel Xeon E3-1200 v5 and v6, or 6th and 7th generation Intel Core i3, i5 and i7 |
| Memory | 4 DDR4 slots, unbuffered ECC or non-ECC, 64 GB maximum, 2133 or 2400 MT/s depending on processor. ECC and non-ECC cannot be mixed |
| Expansion slots | One PCIe Gen3 x16 (full electrical), one x16 mechanical wired at x4, one x4, one x1, optional 32-bit PCI, plus one M.2 PCIe Gen3 x4 (up to 110 mm) |
| Drive bays | Two internal 3.5″, one internal 2.5″, two external half-height 5.25″, one 9.5 mm slim optical bay |
| Integrated display outputs | Two DisplayPort 1.2 and one DVI-D single-link from Intel HD Graphics, on processors that include it |
| Rear I/O | Four USB 3.0, two USB 2.0, two PS/2, RJ-45, audio in/out; serial and parallel optional |
| Front I/O | Two USB 3.0, one USB 2.0, one USB 2.0 charging port, headphone and microphone |
| Power supply | 400 W wide-ranging with active power factor correction, 92% efficient |
Source: HP Z240 Tower Workstation QuickSpecs (linked below).
What the Z240 is and is not
- It is a 64 GB machine, and the memory is unbuffered. Four slots, no registered DIMMs. That is plenty for drafting, office work, light 3D and virtualisation of a VM or two — and a hard stop if you need more.
- There is exactly one full-width graphics slot. The second x16 connector is wired at x4. Combined with the 400 W supply, this is a chassis for a slot-powered professional card — a Quadro P620, P1000, K2200 or P2000 — rather than a large multi-connector GPU. Tell us the card you have in mind and we will confirm it fits before shipping.
- ECC is available, but only in matched form. The board accepts unbuffered ECC or non-ECC DDR4, never both together. If error-correcting memory matters for your work, say so when ordering and we will pair the processor and modules correctly.
- This page is the tower. HP also built a small form factor Z240; it is a different chassis with its own expansion limits. Ask us if that is what you need.
Typical stock
Z240s reach us mainly as Core i5-6500, i7-6700 and i7-7700 builds with 8–32 GB of DDR4, plus occasional Xeon E3-1230 v5 machines. Graphics are split between integrated Intel HD output for office and terminal use and NVIDIA Quadro K2200, M2000 or P2000 cards for CAD and design. Windows 10 or 11 Pro is the usual image. Volumes on this model are smaller than on the bigger Z towers, so if you need several matched units, tell us the quantity and spec and we will source and build them together.
Where to go if the Z240 is too small
- HP Z2 G4 — the direct successor in the entry tower slot, with newer processors and a higher memory ceiling.
- HP Z440 — a real step up: single Xeon E5, eight registered ECC slots to 128 GB, two full x16 slots and a 700 W supply option.
- HP Z4 G4 — Xeon W with 512 GB support, if the workload has genuinely outgrown a four-slot desktop platform.
The full catalogue is on the refurbished HP workstations hub, and we sell DDR4 memory, processors, drives and graphics cards separately for upgrades.
HP Z240 Documentation
HP Z240 Tower Workstation QuickSpecs.pdf
HP Z240 SFF and Tower User Guide.pdf
HP Z240 Tower Maintenance and Service Guide.pdf
HP Z240 — Specs and Buying Questions
What are the HP Z240 specs in short?
One LGA-1151 socket on the Intel C236 chipset, Xeon E3-1200 v5/v6 or 6th/7th generation Core processors, four DDR4 slots capped at 64 GB, one full x16 PCIe Gen3 slot plus an M.2 socket, two internal 3.5″ bays and a 400 W 92%-efficient power supply. HP’s own QuickSpecs document is linked above the FAQ.
How much RAM can a Z240 take?
64 GB across four unbuffered DDR4 slots, running at 2133 or 2400 MT/s depending on the installed processor. It does not accept registered server memory, and ECC and non-ECC modules must never be mixed in the same machine.
Can I fit a graphics card?
Yes, in the one full-electrical x16 slot. Keep to cards the slot can power on its own, given the 400 W supply — the Quadro P620, P1000, K2200 and P2000 class are the natural fit, and we build Z240s with them regularly. If you want something larger, a Z440 with the 700 W supply is the better base.
Is there a small form factor version?
HP built the Z240 in both tower and SFF chassis. Everything listed on this page is the tower. The SFF variant trades expansion room for desk space and has its own graphics and drive limits — if you specifically need one, contact us rather than assuming a tower listing will fit.
Is a used Z240 worth it in 2026?
As a cheap, quiet, well-built desktop for drafting, office, control-room and lab duty, it is very good value — you get workstation build quality and optional ECC for less than a new consumer tower. It is not a rendering or simulation machine, and 64 GB is the ceiling, so match it to the job.
What cover comes with it?
A free 1-year warranty on every configured unit, covering parts, labor and shipping, extendable to five years at checkout. Returns are accepted within 90 days of purchase (RMA and restocking terms), and in-stock configurations ordered before 1:00 pm EST ship the same business day.