SPECIFICATIONS & CUSTOM QUOTES

HP Z840

The HP Z840 is the dual-socket tower in HP’s Z440 / Z640 / Z840 workstation series, built around the Intel C612 chipset and the Xeon E5-2600 processor family. It remains a common choice on the used and refurbished market for CAD, simulation, rendering, virtualisation and other multi-threaded technical work where memory capacity and expansion matter more than the newest core architecture.

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Buying the HP Z840

The Z840 is a previous-generation platform and is handled by quote rather than through our CTO configurator. Tell us the configuration you need and we will confirm sourcing, condition, price and lead time before you commit. A quote request does not reserve stock, and your quote will identify the exact condition and complete configuration offered.

If you do not specifically need the Z840 generation, start with the CTO catalogue instead. The HP Z8 G4 is the direct successor in the same dual-socket tower class and is one of the refurbished systems we configure and sell online.

Systems bought from TekBoost carry our standard 3-year warranty with Next Business Day part replacement, subject to the terms, exclusions and conditions on that page. Manufacturer warranty, software licensing and support entitlements are separate and are not included.

Platform specifications

The figures below are platform capabilities taken from HP’s own service documentation for the Z440 / Z640 / Z840 series. They describe what the platform supports, not what any individual used system contains — match the exact processor, memory, chassis and installed components against the manufacturer document before ordering parts.

Form factor	Tower workstation
Chipset	Intel C612
Processor support	Intel Xeon processor E5-2600 series, including processors up to 150 W. One or two processors.
Memory technology	DDR4-2133 DIMMs across eight direct-attach memory channels (four per processor)
Memory slots	Eight DIMM slots with one processor; a second processor adds eight more, for sixteen in total
Maximum memory	Up to 1 TB with one processor and up to 2 TB with a second processor, using 128 GB DIMMs
Storage interfaces	Eight SAS ports (6 Gb/s) and six SATA / AHCI ports (two SATA 6 Gb/s, four sSATA 6 Gb/s)
Power supply	850 W Silver, 88% efficient, or 1125 W Gold, 90% efficient
Chassis dimensions	44.4 cm (17.5 in) high, 20.3 cm (8.0 in) wide, 52.5 cm (20.7 in) deep

MANUFACTURER REFERENCE

HP Z840 documentation

Every specification on this page is drawn from HP’s Maintenance and Service Guide for the HP Z440, Z640 and Z840 Workstation Series. Check the revision inside the document; HP published several editions and later ones cover different processor and memory options.

HP Z440 / Z640 / Z840 service guide (PDF, hp.com)

Plan a complete configuration

Processor & memory

The second processor is what unlocks the second bank of eight DIMM slots, so a single-processor Z840 cannot reach the platform’s full memory capacity no matter which DIMMs are fitted. Decide your memory target first, then the processor count. Confirm DIMM type, rank and population rules before buying memory.

Graphics & expansion

Processor population also affects which PCIe slots are usable. Check card length and width, the free slot count, power-connector type and the power supply fitted — the 850 W and 1125 W units differ in what they will support. Confirm application certification for the specific graphics card.

Condition & delivery

Compare the complete configured price, the warranty term and the lead time rather than the chassis price alone. Include your quantity, destination, preferred condition and any operating-system requirement when you request a quote.

Common questions

Can I configure and buy the Z840 online?

No. The Z840 is a previous-generation platform and is quoted rather than configured online. Send a quote request with the configuration you need and we will confirm what can be sourced, in what condition, at what price and on what lead time.

How does the Z840 compare with the HP Z8 G4?

Both are dual-socket Z-series towers. The Z840 uses the Intel C612 chipset with the Xeon E5-2600 family and eight memory channels; the Z8 G4 is the later platform and is available as a refurbished configure-to-order system. If your requirement is tied to the Z840 specifically — an older PCIe card, an operating system or an application certification — the Z840 is the right platform; otherwise the Z8 G4 is usually the better-supported choice.

Does the service guide describe my exact system?

No. It describes platform options for its document edition. Check the installed processor, memory, chassis, storage controller, power supply and expansion components on the actual machine before selecting parts.