Manuals, verified specifications and troubleshooting answers for the HP Z440 Workstation — HP's single-socket Xeon E5 tower (2014–2018 generation). Everything on this page is taken from HP's own documentation, which we host and link below. Looking to buy or configure one? Go to the HP Z440 Workstation category.
Overview & key specifications
Written from HP's Z440 QuickSpecs and Technical White Paper — the two documents linked further down
The Z440 is the mid-range member of HP's 2014 Z-series: one LGA2011-3 socket on an Intel C612 chipset, eight DDR4 registered slots, six expansion slots and a tool-less minitower chassis that is 4U-convertible for rack use. It is a single-processor machine — although the Xeon E5-2600 family it accepts is a dual-socket part family, HP's documentation states plainly that the Z440 does not support dual-processor configurations.
431.8 × 168.9 × 444.7 mm
Expansion slot layout
| Slot | Interface | Physical |
|---|---|---|
| 1 (top) | PCIe Gen2 x1 | Open-ended, full height, half length |
| 2 | PCIe Gen3 x16 | Retention latch, full height, full length (with extender) |
| 3 | PCIe Gen2 x4 | Open-ended, full height, full length (with extender) |
| 4 | PCIe Gen3 x8 | Open-ended, full height, full length (with extender) |
| 5 | PCIe Gen3 x16 | Retention latch, full height, full length (with extender) |
| 6 | PCI 32-bit / 33 MHz | Full height, full length (with extender) |
The two Gen3 x16 slots (2 and 5) are the graphics slots. The 700 W supply ships with two graphics power cables and supports up to 225 W of graphics; the 525 W supply has no 6-pin graphics cable at all.
Ports
- Front: 4 × USB 3.0 (the topmost is a charging port), 1 headset, 1 microphone.
- Rear: 4 × USB 3.0, 2 × USB 2.0, 2 × PS/2, 1 × RJ-45 GbE, audio line-in, audio line-out, rear power button. Serial is available with an optional bracket connector cabled to the board header.
- Internal: one 2×5 header carrying 2 × USB 2.0 (also feeds an optional 15-in-1 media card reader) and one 2×10 header carrying 1 × USB 3.0.
Supported processors
HP's factory-orderable CPU list for the Z440, from the QuickSpecs processor table
Platform-wide, the Z440 supports the Intel Xeon E5-1600 v3/v4 and E5-2600 v3/v4 product families on its single LGA2011-3 socket. The table below is the narrower list HP actually sold the machine with — it is the right list to check against if you are matching a CPU to a BIOS revision. Memory runs at the speed of the slowest installed processor or DIMM, so the CPU also caps your RAM speed.
| Processor | Cores | Base clock | Cache | Max memory speed | HT | TDP |
|---|---|---|---|---|---|---|
| Xeon E5-1680 v4 | 8 | 3.4 GHz | 20 MB | 2400 MT/s | Yes | 140 W |
| Xeon E5-1660 v4 | 8 | 3.2 GHz | 20 MB | 2400 MT/s | Yes | 140 W |
| Xeon E5-1650 v4 | 6 | 3.6 GHz | 15 MB | 2400 MT/s | Yes | 140 W |
| Xeon E5-1630 v4 | 4 | 3.7 GHz | 10 MB | 2400 MT/s | Yes | 140 W |
| Xeon E5-1620 v4 | 4 | 3.5 GHz | 10 MB | 2400 MT/s | Yes | 140 W |
| Xeon E5-1607 v4 | 4 | 3.1 GHz | 10 MB | 2133 MT/s | No | 140 W |
| Xeon E5-1603 v4 | 4 | 2.8 GHz | 10 MB | 2133 MT/s | No | 140 W |
| Xeon E5-2637 v4 | 4 | 3.5 GHz | 15 MB | 2400 MT/s | Yes | 135 W |
| Xeon E5-2623 v4 | 4 | 2.6 GHz | 10 MB | 2133 MT/s | Yes | 85 W |
| Xeon E5-1680 v3 | 8 | 3.2 GHz | 20 MB | 2133 MT/s | Yes | 140 W |
| Xeon E5-1660 v3 | 8 | 3.0 GHz | 20 MB | 2133 MT/s | Yes | 140 W |
| Xeon E5-1650 v3 | 6 | 3.5 GHz | 15 MB | 2133 MT/s | Yes | 140 W |
| Xeon E5-1630 v3 | 4 | 3.7 GHz | 10 MB | 2133 MT/s | Yes | 140 W |
| Xeon E5-1620 v3 | 4 | 3.5 GHz | 10 MB | 2133 MT/s | Yes | 140 W |
| Xeon E5-1607 v3 | 4 | 3.1 GHz | 10 MB | 1866 MT/s | No | 140 W |
| Xeon E5-1603 v3 | 4 | 2.8 GHz | 10 MB | 1866 MT/s | No | 140 W |
| Xeon E5-2630 v3 | 8 | 2.4 GHz | 20 MB | 1866 MT/s | Yes | 85 W |
Higher-core E5-2600 v3/v4 parts (for example the 8-core E5-2667 v4 and the 10-core E5-2687W v3) are outside HP's factory list but are within the family the platform supports — several of the machines we ship use them. If you need a specific SKU verified before you buy, ask us and we will confirm it against the exact BIOS revision on the unit.
Memory: what fits and how to load it
From the memory chapter of HP's Z440 Technical White Paper
Not supported: unbuffered DIMMs, non-ECC DIMMs, load-reduced (LRDIMM) modules, and any DDR, DDR2 or DDR3 memory.
- Broadwell (v4) CPUs take PC4-2400R modules; Haswell (v3) CPUs take PC4-2133R. The system runs at the speed of the slowest installed processor or DIMM.
- Load largest modules first, smallest last. Each channel has a black and a white socket — fill the black sockets first, then the white ones, starting with the socket furthest from the CPU and alternating sides.
- HP's documented population order across the eight sockets is DIMM1, 5, 3, 7, 8, 4, 6, 2.
- Balanced four- and eight-module configurations are the ones HP rates "Best": 4 × 4 GB (16 GB), 4 × 8 GB (32 GB), 8 × 8 GB (64 GB), 4 × 16 GB (64 GB), 8 × 16 GB (128 GB).
- ECC corrects single-bit errors automatically. A multi-bit error, or a command/address parity error, reboots the system and halts it with an F1 prompt.
Need modules? Our tested DDR4 ECC registered server memory is stocked in the 4/8/16 GB sizes this machine takes.
Documentation & manuals
Original HP documents, hosted on our servers so the links do not rot. Unmodified vendor PDFs — HP holds the copyright.
More PCSP resources: all hosted spec sheets · troubleshooting guides · store FAQ.
Common tasks & troubleshooting
The questions we are actually asked about this machine
Which key opens the BIOS on an HP Z440?
What do the beep codes and blinking power LED mean?
The Z440 has no video output on the motherboard — is that normal?
Where do I find the motherboard diagram and connector layout?
What RAID does the Z440 support, and where is the driver?
How much RAM can a Z440 take, and what type?
Which power supply do I need — 525 W or 700 W?
Can the Z440 be rack-mounted?
How many drives fit, and can I add more?
Is a refurbished Z440 worth buying in 2026?
HP Z440 workstations in stock now
Built, tested and warrantied by PCSP — a sample of what is on the shelf today
See every HP Z440 configuration in stock → · Need a spec we do not have listed? Request a quote and we will build it.
Buy a refurbished HP Z440 — built and warrantied by PCSP
Configure the CPU, memory, GPU and storage; we assemble it, burn-in test it, and ship it with a free 1-year warranty, extendable to 5 years. 90-day returns on anything dead-on-arrival or non-conforming.