HP Z840 Workstation: CPU Support List
The HP Z640 is a high-performance workstation featuring up to two CPU sockets and support for Intel Xeon E5-2600 v3/v4 series processors. This article provides a comprehensive compatibility list of supported CPUs for the Z840, along with their specifications and upgrade instructions.
Supported Processor Families
Intel Xeon E5-2600 v3 Series (Haswell-EP)
| Feature | Details |
|---|---|
| Socket | LGA2011-3 |
| Core/Thread Count | 4 to 18 cores (8 to 36 threads with Hyper-Threading) |
| Base Clocks | 1.6 GHz – 3.5 GHz |
| Turbo Boost | Up to 3.7 GHz |
| L3 Cache | Up to 45 MB |
| TDP | 55W – 160W |
| Memory Support | Quad-channel DDR4 ECC, 1600–2133 MT/s, up to 768GB per CPU |
| PCIe Lanes | Up to 40 PCIe 3.0 lanes |
| Security | Intel vPro, VT-x, VT-d |
Intel Xeon E5-2600 v4 Series (Broadwell-EP)
| Feature | Details |
|---|---|
| Socket | LGA2011-3 |
| Core/Thread Count | 4 to 22 cores (8 to 44 threads with Hyper-Threading) |
| Base Clocks | 2.0 GHz – 3.5 GHz |
| Turbo Boost | Up to 3.7 GHz |
| L3 Cache | Up to 55 MB |
| TDP | 55W – 145W (some SKUs up to 160W) |
| Memory Support | Quad-channel DDR4 ECC, 1600–2400 MT/s, up to 1.5TB per CPU |
| PCIe Lanes | Up to 40 PCIe 3.0 lanes |
| Security | Intel vPro, VT-x, VT-d |
HP Z840 CPU Support List
The table below lists compatible processors for the HP Z840 Workstation. The links will direct you to the Bargain Hardware listing where you can purchase fully tested, refurbished CPUs (subject to stock availability.)
| Processor Model | Cores / Threads | Base Clock Speed | Max Turbo | Cache | TDP (W) |
|---|---|---|---|---|---|
| Intel Xeon E5-2623 V3 | 4 / 8 | 3.00 GHz | 3.50 GHz | 10 MB | 105W |
| Intel Xeon E5-2637 V3 | 4 / 8 | 3.50 GHz | 3.70 GHz | 10 MB | 135W |
| Intel Xeon E5-2623 V4 | 4 / 8 | 2.60 GHz | 3.20 GHz | 10 MB | 85W |
| Intel Xeon E5-2637 V4 | 4 / 8 | 3.50 GHz | 3.70 GHz | 10 MB | 135W |
| Intel Xeon E5-2603 V3 | 6 / 6 | 1.60 GHz | — | — | 85W |
| Intel Xeon E5-2609 V3 | 6 / 6 | 1.90 GHz | — | — | 85W |
| Intel Xeon E5-2620 V3 | 6 / 12 | 2.40 GHz | 3.20 GHz | 10 MB | 85W |
| Intel Xeon E5-2643 V3 | 6 / 12 | 3.40 GHz | 3.70 GHz | 10 MB | 135W |
| Intel Xeon E5-2603 V4 | 6 / 6 | 1.70 GHz | — | — | 85W |
| Intel Xeon E5-2643 V4 | 6 / 12 | 3.40 GHz | 3.70 GHz | 10 MB | 135W |
| Intel Xeon E5-2630 V3 | 8 / 16 | 2.40 GHz | 3.20 GHz | 10 MB | 85W |
| Intel Xeon E5-2640 V3 | 8 / 16 | 2.60 GHz | 3.40 GHz | 10 MB | 90W |
| Intel Xeon E5-2667 V3 | 8 / 16 | 3.20 GHz | 3.60 GHz | 15 MB | 135W |
| Intel Xeon E5-2609 V4 | 8 / 8 | 1.70 GHz | — | — | 85W |
| Intel Xeon E5-2620 V4 | 8 / 16 | 2.10 GHz | 3.00 GHz | 10 MB | 85W |
| Intel Xeon E5-2667 V4 | 8 / 16 | 3.20 GHz | 3.60 GHz | 15 MB | 135W |
| Intel Xeon E5-2650 V3 | 10 / 20 | 2.30 GHz | 3.00 GHz | 25 MB | 105W |
| Intel Xeon E5-2660 V3 | 10 / 20 | 2.60 GHz | 3.30 GHz | 25 MB | 105W |
| Intel Xeon E5-2687W V3 | 10 / 20 | 3.10 GHz | 3.50 GHz | 25 MB | 160W |
| Intel Xeon E5-2630 V4 | 10 / 20 | 2.20 GHz | 3.10 GHz | 25 MB | 85W |
| Intel Xeon E5-2640 V4 | 10 / 20 | 2.40 GHz | 3.40 GHz | 25 MB | 90W |
| Intel Xeon E5-2670 V3 | 12 / 24 | 2.30 GHz | 3.10 GHz | 30 MB | 120W |
| Intel Xeon E5-2673 V3 | 12 / 24 | 2.40 GHz | 3.20 GHz | 30 MB | 105W |
| Intel Xeon E5-2680 V3 | 12 / 24 | 2.50 GHz | 3.30 GHz | 30 MB | 120W |
| Intel Xeon E5-2690 V3 | 12 / 24 | 2.60 GHz | 3.50 GHz | 30 MB | 135W |
| Intel Xeon E5-2650 V4 | 12 / 24 | 2.20 GHz | 2.90 GHz | 30 MB | 105W |
| Intel Xeon E5-2695 V3 | 14 / 28 | 2.30 GHz | 3.30 GHz | 35 MB | 120W |
| Intel Xeon E5-2697 V3 | 14 / 28 | 2.60 GHz | 3.60 GHz | 35 MB | 145W |
| Intel Xeon E5-2680 V4 | 14 / 28 | 2.40 GHz | 3.30 GHz | 35 MB | 120W |
| Intel Xeon E5-2683 V4 | 16 / 32 | 2.10 GHz | 3.00 GHz | 40 MB | 120W |
| Intel Xeon E5-2699 V3 | 18 / 36 | 2.30 GHz | 3.60 GHz | 45 MB | 145W |
| Intel Xeon E5-2695 V4 | 18 / 36 | 2.10 GHz | 3.30 GHz | 45 MB | 120W |
| Intel Xeon E5-2697 V4 | 18 / 36 | 2.30 GHz | 3.60 GHz | 45 MB | 145W |
| Intel Xeon E5-2699 V4 | 22 / 44 | 2.20 GHz | 3.60 GHz | 55 MB | 145W |
How to Replace or Upgrade Your CPU
Follow these step-by-step instructions to safely replace or upgrade the CPU in your HP Z840 workstation. For safety purposes, Bargain Hardware advises that you consult the HP Z840 User Guide (found on the Z840 Model Homepage) before replacing any components in your machine.
- Power off your workstation and disconnect all cables.
- Discharge static electricity using an anti-static wrist strap or by touching a grounded metal object.
- Open the workstation case to access the motherboard.
- Locate the CPU socket and carefully remove the heatsink.
- Unlock the CPU socket lever and remove the current CPU.
- Install the new CPU, ensuring proper alignment with the socket.
- Apply thermal paste and reattach the heatsink securely.
- Reconnect all cables, close the case, and power on the workstation.
Upgrade Tips
- Ensure your BIOS is updated to the latest version to support newer processors.
- Use a cooling solution rated for the processor's TDP to avoid overheating.
- Pair your processor with compatible ECC memory for maximum stability and performance.
Configure the HP Z840 Online
Customise the HP Z840 Workstation using our industry-leading online configurator. Each component is professionally refurbished and rigorously tested to meet the highest standards. With fast shipping available across the UK, EU and worldwide, plus an included 3-year RTB warranty, you can deploy your workstation quickly and with complete confidence.
Configure the HP Z840