| Model | HP Z8 G4 Workstation |
| Operating System | Windows 10 Pro 64 for Workstations – HP recommends Windows 10 Pro. 1,21,22 |
| HP Installer Kit for Linux® | |
| Red Hat® Enterprise Linux® | |
| (HP Linux® Installer Kit includes drivers for 64-bit versions of Red Hat® Enterprise Linux® 7.4, | |
| SUSE Linux® Enterprise Desktop 12 and Ubuntu 16.04. Red Hat® Enterprise Linux® | |
| (1-year paper license only) is available as a second operating system.) | |
| Processor Family | Intel® Xeon® Scalable processor |
| Chipset | Intel® C622 |
| Maximum Memory | 3 TB DDR4-2666 ECC SDRAM 20 (Transfer rates up to 2666 MT/s.) |
| Memory Slots | 24 DIMM |
| Drive Controllers | Integrated SATA 6.0 Gb/s |
| Internal Storage | 300 GB SAS (15000 rpm) 4 |
| 500 GB up to 2 TB SATA (7200 rpm) 4 | |
| 500 GB SATA SED (7200 rpm) 4 | |
| 1 TB up to 4 TB 7200 rpm SATA Enterprise 4 | |
| 256 GB up to 2 TB SATA SSD 4 | |
| 256 GB up to 512 GB SATA SED Opal 2 SSD 4 | |
| 240 GB up to 480 GB SATA Enterprise SSD 4 | |
| 256 GB up to 1 TB HP Z Turbo Drive PCIe® NVMe™ SSD 4 | |
| 256 GB up to 1 TB HP Z Turbo Drive PCIe® NVMe™ SSD M.2 4 | |
| 256 GB up to 512 GB HP Z Turbo Drive PCIe® NVMe™ SED SSD M.2 4 | |
| 256 GB up to 4 TB HP Z Turbo Drive Quad Pro PCIe® SSD 4 | |
| Optical Storage | HP Slim DVD-ROM; HP Slim Blu-ray Writer; HP Slim DVD-Writer 5,6 |
| Drive Bays (Internal) | Four 2.5" or 3.5"16 |
| Drive Bays (External) | Two 5.25" |
| Expansion Slots | 2 PCIe x4; 3 PCIe x8; 4 PCIe x16 |
| (1 PCIe x8 has rear bulkhead access and 2 PCIe x8 are internal access only. Slot 1: | |
| Transforms to PCIe x8 when 2nd CPU is installed Slots 3 and 6: are available only | |
| are available only when 2nd processor is installed. PCIe x16 - Available only when | |
| 2nd processor is installed.) | |
| Networking | LAN: Integrated Intel® I219-LM PCIe® GbE; Integrated Intel® X722 PCIe® GbE; |
| Intel® I350-T2 dual-port GbE NIC;Intel® I350-T4 dual-port GbE NIC; | |
| Intel® I210-T1 PCIe® GbE; Intel® X550-T2 dual-port GbE NIC; Intel® | |
| X710-DA2 dual-port GbE NIC;Intel®10 GbE SFP+ SR transceiver; | |
| HP dual-port 10GBase-T NIC 19 WLAN: Intel® Dual Band Wireless-AC | |
| 8265 802.11a/b/g/n/ac (2x2) Wi-Fi® and Bluetooth® 4.2 Combo, non-vPro™ | |
| Power | 1700 W internal power supply, up to 90% efficiency, active PFC; 1450 W internal power supply, |
| up to 90% efficiency active PFC; 1125 W internal power supply, up to 90% efficiency, active PFC | |
| Dimensions | 8.5 x 21.7 x 17.5 in |
| 21.59 x 55.12 x 44.45 cm | |
| Weight | Starting at 49.4 lb |
| Starting at 22.4 kg | |
