HP Z4 G5 Workstation
HP's single-socket Xeon W-2400/W-2500 (LGA4677, Intel W790) tower workstation with 8 DDR5 ECC RDIMM slots (up to 512 GB), PCIe Gen5 and up to two double-width professional GPUs. Aimed at CAD, content creation and engineering desks that need more than a Core-based Z2.
Memory
- Slots
- 8 DDR5 DIMM slots
- Type
- DDR5 registered ECC (RDIMM); 16 GB, 32 GB and 64 GB modules; NVDIMM not supported
- Speed
- 4800 MT/s at 1 DIMM per channel, 4400 MT/s at 2 DIMMs per channel; CPU sets the final speed
- Max
- 512 GB (8 × 64 GB)
- Rules
- 64 GB RDIMMs cannot be mixed with other capacities; 8-DIMM configurations (128/256/512 GB) need the 775 W or 1125 W PSU
- Cooling
- 32 GB or larger RDIMMs need the HP Z4 Memory Cooling Solution (56Q81AA) when added after purchase
Storage
- Bays
- 2 internal 3.5" + 2 external 5.25" (only 1 external drive factory-configurable); up to 4 × 3.5" SATA HDD, 48 TB max
- M.2
- 2 onboard M.2 PCIe Gen4 x4 slots (devices up to 80 mm)
- Front NVMe
- 1 SlimSAS PCIe Gen4 x8 connector for the HP CRU QX428 front removable carrier (two x4 M.2, hot-swap)
- PCIe SSD cards
- HP Z Turbo Drive Dual Pro (PCIe 4.0 x4 carrier, 56Q86AA) and Z Turbo Drive Quad Pro (PCIe 4.0 x16 carrier, 7H9Z3AA)
- Z Turbo M.2 drives
- 512 GB to 8 TB PCIe 4.0 x4 TLC, SED OPAL2 versions available
- SATA
- 5 SATA ports; 1/2/4/8/12 TB 7200 rpm enterprise HDDs
- RAID
- RAID 0/1/5/10; Intel VROC Standard (3FJ80AA, RAID 0/1/10) or Premium (3FJ81AA, adds RAID 5) for NVMe
- Removable
- HP DX175 removable HDD carrier (4 TB max); HP CRU secure storage modules 512 GB-4 TB
- Optical
- 9.5 mm slim DVD-ROM, SuperMulti DVD writer or BDXL Blu-ray writer (needs a 5.25" bay carrier)
- Boot drive
- From Nov 2023 HP ships Windows only on an SSD; HDDs are data drives
Graphics
- Integrated
- None
- Ultra high-end
- NVIDIA RTX PRO 6000 Blackwell Max-Q 96 GB (2 max); earlier: NVIDIA RTX A6000, RTX A5000, RTX A5000E, AMD Radeon Pro W7900 (1 max)
- High-end
- NVIDIA RTX 6000 Ada, RTX 5880 Ada, RTX PRO 5000 Blackwell, RTX 5000 Ada, RTX PRO 4500 Blackwell, RTX 4500 Ada, RTX PRO 4000 Blackwell, RTX 4000 Ada; earlier: RTX A4500, RTX A4000/A4000E, AMD Radeon Pro W6800
- Mid-range
- NVIDIA RTX PRO 2000 Blackwell, RTX 2000 Ada, RTX 2000E Ada, RTX A1000, T1000E; AMD Radeon Pro W7600, W7500; earlier: RTX A2000/A2000E, T1000 8 GB/4 GB, Radeon Pro W6600, Radeon RX 6700 XT (1 max)
- Entry
- NVIDIA RTX A400, T400E; AMD Radeon RX 6400 (1 max); Intel Arc Pro A40 (1 max); earlier: NVIDIA T400
- Max cards
- 2 for most cards; NVLink 3-slot bridge and Quadro Sync II / RTX PRO Sync offered
- Required kits
- Most cards (footnoted in QuickSpecs) need the Z4 Fan and Front Card Guide (56Q79AA) in single or dual configurations; dual high-end cards also need the Z4 PCIe Retainer with Fans (56Q84AA). Both are included when factory-configured
Expansion
- Slot 1
- PCIe 5.0 x16 (x16 electrical), full height, full length
- Slot 2
- PCIe 4.0 x4 (x4 mechanical), full height, half length
- Slot 3
- PCIe 4.0 x4 (x4 mechanical), full height, half length
- Slot 4
- PCIe 4.0 x16 (x16 electrical), full height, full length
- Slot 5
- PCIe 4.0 x16 (x16 electrical), full height, full length
- M.2
- 2 × PCIe 4.0 x4 onboard
- Other
- 1 front NVMe SlimSAS PCIe 4.0 x8; Flex I/O module bay on rear; optional HP Dual TBT4 PCIe x4 low-profile card (340L1AA)
Networking
- Onboard
- 1 × 1GbE RJ-45, Intel I219-LM (AMT, DASH, PXE, WOL)
- Flex I/O options
- HP 10GBase-T, 2.5GbE, 1GbE, 1GbE fiber LC, Intel AX210 Wi-Fi 6 + BT 5.2
- Cards
- Intel X550 10GBASE-T dual, Intel I225-T1 2.5GbE, Intel I350-T4, Intel E810-XXVDA2 10/25GbE, NVIDIA Mellanox ConnectX-6 Dx 10/25GbE SFP28, Broadcom 5720, Allied Telesis AT-2914SX/LC and AT-2911Ta/2, Intel AX210 Wi-Fi 6E + BT 5.2 (external antenna)
Power
- 525 W
- 80 PLUS Gold (90% at 50% load); up to 100 W auxiliary graphics power
- 775 W
- 80 PLUS Gold; up to 400 W auxiliary graphics power
- 1125 W
- 80 PLUS Gold; up to 600 W auxiliary graphics power
- Input
- 100-240 VAC rated (90-269 VAC operating), 50-60 Hz
Ports
- Front (Premium)
- 2 × USB-C 20 Gbps (USB PD 3.0), 2 × USB-A 5 Gbps (1 charging), headset jack, optional SD reader
- Front (Entry)
- 4 × USB-A 5 Gbps (1 charging), headset jack, optional SD reader
- Rear
- 6 × USB-A 5 Gbps, 1 × RJ-45, audio in/out
- Optional
- Flex I/O module (serial, dual USB-A 3.2 Gen1, USB-C 3.2 Gen2, NICs, Wi-Fi), internal serial + PS/2 port, USB 2.0 Type-A adapter, dual Thunderbolt 4 card
- Internal
- 5 SATA, 1 USB 3.2 Gen1 header (SD reader), 1 single and 1 dual USB 2.0 header
Physical
- Form factor
- Tower (4U when racked)
- Dimensions (H×W×D)
- 386 × 169 × 445 mm footprint (458.6 mm max depth)
- Weight
- Minimum 10.5 kg, typical 12.6 kg, maximum 19.5 kg
- Operating temp
- 5-40 °C
- Rack
- Z2 Mini/Z2 Tower/Z4/Z6 depth-adjustable fixed rail rack kit (2A8Y5AA)
- Noise
- 3.3-3.4 B idle/active (entry config) to 4.0 B active (high-end, 2 GPUs)
Management
- vPro / AMT
- Intel AMT 16.10 via I219-LM, DASH 1.2
- Remote
- HP Remote System Controller (PCIe or integrated) and main-board adapter
- Security
- TPM 2.0 (Infineon SLB 9672), HP Sure Start Gen7, chassis intrusion sensor, optional solenoid hood lock, padlock and Kensington slot
- BIOS
- UEFI 2.7B, per-slot bifurcation/speed control, HP BIOS Configuration Utility
Operating systems
- Preinstalled
- Windows 11 Pro for Workstations (or Windows 10 Pro for Workstations downgrade), Ubuntu 20.04/22.04/24.04 LTS, HP Linux-ready
- Supported
- Windows 11 23H2/24H2/25H2, RHEL Workstation 8 and 9, SUSE Linux Enterprise Desktop 15, Ubuntu 20.04/22.04/24.04 LTS
- Not supported
- Windows 7 and 8
Processors
- Intel Xeon w7-2595X
- Intel Xeon w7-2575X
- Intel Xeon w5-2565X
- Intel Xeon w5-2555X
- Intel Xeon w5-2545
- Intel Xeon w3-2535
- Intel Xeon w3-2525
- Intel Xeon w7-2495X
- Intel Xeon w7-2475X
- Intel Xeon w5-2465X
- Intel Xeon w5-2455X
- Intel Xeon w5-2445
- Intel Xeon w3-2435
- Intel Xeon w3-2425
- Intel Xeon w3-2423