Dell Precision 7865 Tower
Single-socket AMD Ryzen Threadripper PRO 5000 WX-series tower workstation on the AMD WRX80 chipset: up to 64 cores, 1 TB of DDR4-3200 ECC in eight DIMM slots, two 300 W professional GPUs and a 1350 W Platinum PSU. Aimed at heavy CAD, simulation, rendering and AI/VR work.
Memory
- Slots
- 8 DIMM (DIMM1–DIMM8)
- Type
- DDR4 ECC RDIMM (spec sheet: 8x DDR4 RDIMM up to 1 TB at 3200 MHz; ECC with RMT Pro)
- Speed
- 3200 MT/s
- DIMM sizes
- 8, 16, 32, 64 or 128 GB per slot
- Minimum
- 8 GB (1 × 8 GB)
- Maximum
- 1024 GB (8 × 128 GB)
- Factory configs
- 1, 2, 4 or 8 DIMMs of equal size (Dell memory matrix), 8 GB up to 1024 GB
- Mixing rules
- No mixing of DIMM capacities, x4 and x8 DRAM modules, or 3DS and non-3DS RDIMMs
- BIOS option
- 'Limit system memory to less than 1 TB' (disabled by default)
- Cooling
- Memory fan module built into the top air shroud
Storage
- Front flexbays
- 2 externally facing flexbays; each takes a 2.5"/3.5" SATA drive or an M.2 2230/2280 PCIe NVMe Gen4 SSD carrier (NVME0/NVME1 connectors)
- Internal drives
- 2 × 2.5"/3.5" SATA 3.0 in the internal hard-drive cage
- Internal M.2
- 2 × M.2 2230/2280 PCIe NVMe Gen4 x4 slots on the system board (with SSD heat sink)
- SATA ports
- SATA-0 to SATA-4 on the board: 2 for internal HDD / slim ODD, 2 for the front flexbays
- Drive options
- 2.5" 500 GB 7200 rpm HDD; 3.5" 1 TB 7200 rpm HDD; 3.5" Enterprise HDD up to 8 TB; M.2 2230 256 GB Class 35; M.2 2280 Class 40 up to 4 TB; M.2 2280 Opal 2.0 SED (FIPS) up to 1 TB
- Maximum
- Up to 56 TB (spec sheet)
- Optical
- 8x DVD-ROM or 8x DVD+/-RW 9.5 mm slim; 16x DVD+/-RW half-height (takes the lower flexbay)
- RAID
- AMD RAIDXpert2 for SATA and NVMe: RAID 0, 1, 5, 10 (SATA/NVMe Operation defaults to RAID On)
- Add-in storage
- Dell Ultra-Speed Duo and Ultra-Speed Quad cards; Zoom 2 / Zoom 4 Ultra-Speed cards (Ultra-Speed card up to 16 TB)
- Locking
- Lockable flexbay bezel: included with M.2 NVMe flexbays, optional with SATA flexbays
Graphics
- Capacity
- Up to two NVIDIA or AMD professional 300 W graphics cards (spec sheet); no integrated graphics
- NVIDIA pro
- RTX A6000 48 GB, RTX A5500 24 GB, RTX A4500 20 GB, RTX A4000 16 GB, RTX A2000 12 GB, T1000 8 GB, T400 4 GB, Quadro GV100 32 GB HBM2
- NVIDIA GeForce
- GeForce RTX 3090 24 GB, GeForce RTX 3080 10 GB
- AMD
- Radeon Pro W6800 32 GB, W6600 8 GB, W6400 4 GB, W6300 2 GB; Radeon RX 6900 XT 16 GB
- GPU power
- 1350 W PSU: four 8-pin (6+2) auxiliary connectors; 1000 W PSU: two
- Max resolution
- 7680 × 4320 on every listed card (needs DSC and/or multiple DP links)
Expansion
- Slot 1
- PCIe Gen4 x16, full height
- Slot 2
- PCIe Gen4 x8, full height
- Slot 3
- PCIe Gen4 x8, full height
- Slot 4
- PCIe Gen4 x16, full height
- Slot 5
- PCIe Gen4 x8, full height
- Other
- TBT header for a Thunderbolt 3 add-in card; internal USB 3.2 Gen 1 port (for a USB key); BIOS PCIe bifurcation option
- Add-in cards
- Thunderbolt 3 PCIe card, USB 4.0 Type-C card, Intel X710 and i225 NICs, wireless LAN card, Ultra-Speed Duo/Quad and Zoom 2/Zoom 4 storage cards
Networking
- Onboard
- 1 × RJ45 1 GbE + 1 × RJ45 10 GbE (rear)
- Controllers listed
- Realtek RTL8111-EPP (1 Gbps), Marvell AQC113CS / AQC113 (10 Gbps), Intel Ethernet Connection i225 (1 Gbps per manual), Intel Ethernet 10G 2P X710-T2L-t (10 Gbps)
- Optional NIC cards
- Intel Ethernet Network Adapter X710, Intel Ethernet Controller i225 (spec sheet)
- Wireless (optional)
- Qualcomm WCN6856-DBS Wi-Fi 6E 2x2, up to 3571 Mbps, 2.4/5/6 GHz (6 GHz with Windows 11 only), Bluetooth 5.3 (spec sheet says 5.2)
Power
- PSU options
- 1350 W Platinum (C20 inlet) or 1000 W Platinum (C14 inlet); the spec sheet lists only 1350 W
- Input
- 90–264 VAC, 47–63 Hz; 16 A max (1350 W), 12 A max (1000 W)
- 1350 W outputs
- 12 VA 42 A, 12 VB 36 A, 12 VC 72 A; 3 × 4-pin CPU, 1 × 12-pin board, 4 × 8-pin (6+2) PCIe
- 1000 W outputs
- 12 VA 36 A, 12 VB 27 A, 12 VC 36 A; 2 × 4-pin CPU, 1 × 10-pin board, 2 × 8-pin (6+2) PCIe
- Note
- Dell: high-wattage PSU, must be connected to a PDU at all times
- Diagnostics
- Power-supply diagnostics light on the rear
Ports
- Front
- 2 × USB 3.2 Gen 1 Type-A, 1 × USB 3.2 Gen 2 Type-C with PowerShare, 1 × USB 3.2 Gen 2 Type-C, universal audio jack, SD 6.0 card reader
- Rear
- 3 × USB 3.2 Gen 2 Type-C, 2 × USB 3.2 Gen 1 Type-A, 1 × USB 3.2 Gen 1 Type-A with Smart Power On, RJ45 1 GbE, RJ45 10 GbE, line-out, serial (optional), 2 × PS/2 (optional)
- Video
- Via discrete GPU only
- Audio
- Realtek ALC4050-CG; one internal 2 W speaker
- Security
- Kensington slot, padlock loop
Physical
- Height
- 414.0 mm (417.9 mm with feet)
- Width
- 172.6 mm (176.5 mm with feet)
- Depth
- 429.6 mm (452.1 mm with lock structure)
- Weight
- 16.10 kg minimum, 21.90 kg maximum
- Chassis
- Full-size (medium-size) tower; carrying grip; lockable tool-less side panel; optional rail kit screws to the chassis sides
- Cooling
- Front fan, two rear fans, hard-drive fan, CPU fan and heat sink, memory fan in the air shroud
- Operating environment
- 10–35 °C, 20–80% RH non-condensing, up to 3048 m
Management
- Remote management
- AMD Advanced Management with DASH
- TPM
- Discrete TPM 2.0 (firmware TPM when the discrete TPM is disabled)
- Security
- Chassis intrusion switch, coin-lock chassis lock, lockable flexbay bezels, SED (Opal/FIPS) support, BIOS passwords, BIOS Secure Erase
- Software
- Dell Optimizer for Precision, Dell Trusted Device agent (for the intrusion switch)
- Wake
- Wake on LAN/WLAN, Auto On Time (BIOS)
Operating systems
- Windows
- Windows 11 Pro 64-bit; Windows 11 Pro downgrade (Windows 10 Pro factory image); Windows 11 CMIT Government Edition (China only)
- Linux
- Ubuntu 20.04 LTS 64-bit; Red Hat Enterprise Linux 8.6
Processors
- AMD Ryzen Threadripper PRO 5995WX
- AMD Ryzen Threadripper PRO 5975WX
- AMD Ryzen Threadripper PRO 5965WX
- AMD Ryzen Threadripper PRO 5955WX
- AMD Ryzen Threadripper PRO 5945WX