Dell Precision 5860 Tower

Dell's mid-size single-socket Xeon W tower on the Intel W790 chipset: 6 to 26-core Xeon w3/w5/w7 CPUs, 8 DDR5 ECC RDIMM slots for up to 2 TB, five PCIe slots (one Gen5 x16), up to two pro GPUs and a 750 W or 1350 W Platinum PSU. For CAD, content creation and single-socket compute that needs more memory and I/O than a desktop CPU gives.

Memory

Slots: 8 DIMM (DIMM1-DIMM8), quad-channel (channels A, B, E, F; 2 DIMMs per channel)
Type: DDR5 ECC RDIMM
Speed: 4800 MT/s; drops to 4400 MT/s when five or more DIMMs are installed. w3-2423/2425/2435/2525/2535 run at up to 4400 MT/s in every configuration. Faster-rated DIMMs (the store lists 5600 MT/s modules) still run at the CPU limit
DIMM sizes: 16, 32, 64, 128, 256 GB (the store also listed 96 GB modules: 4 × 96 GB and 8 × 96 GB)
Minimum: 16 GB (1 × 16 GB)
Maximum: 2 TB (8 × 256 GB)
Population: Dell's memory matrix: a single DIMM goes in DIMM1, two in DIMM1 + DIMM2, four in DIMM1-DIMM4
Cooling: Memory fan module is 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; lockable bezel (included with M.2 NVMe drives, optional with SATA)
Internal bays: 2 × 3.5"/2.5" SATA drive bays
Onboard M.2: 2 × M.2 2230/2280 PCIe NVMe Gen4 slots on the system board (M.2 PCIe SSD-0/SSD-1)
Optical: Slim 9.5 mm 8x DVD-ROM or 8x DVD±RW; spec sheet also lists a 16x DVD±RW half-height drive; the store offered a 5.25" expansion bay with cabling
SATA: SATA 3.0 (6 Gb/s); system board has SATA-0 to SATA-5 data connectors
Drive options: 3.5" SATA HDD 1, 2, 4, 8, 12 TB; 2.5" SATA HDD 500 GB; 2.5" SAS HDD 600 GB 15K, 1.2 and 2.4 TB 10K; 2.5" 1.92 TB SATA mixed-use SSD; M.2 NVMe Gen4 SSD 256 GB-4 TB incl. Opal 2.0/FIPS SEDs; the store later added M.2 Gen5 x4 SSDs (512 GB-4 TB)
Intel RAID: Intel VMD with VROC pass-through built in (JBOD only); optional VROC Standard key (RAID 0/1/10) or VROC Premium (RAID 0/1/5/10); NVMe RAID needs the VROC key. VMD controllers: onboard M.2 PCIE0/1, NVME-0, NVME-1
RAID cards: Broadcom MegaRAID 9540-8i (up to 8 SAS/SATA or 2 NVMe) or MegaRAID 9660-16i (x8 Gen4, up to 16 SAS/SATA or 4 NVMe, 24 Gb/s SAS, CacheVault); SAS drives need a MegaRAID card. Dell validated RAID 0/1/5/10
NVMe add-in: Dell UltraSpeed Duo (2 × M.2) and UltraSpeed Quad (4 × M.2) PCIe cards
Total: Spec sheet: up to 56 TB storage

Graphics

Capacity: Up to 2 AMD or NVIDIA pro graphics cards (spec sheet); the store offered dual cards up to 2 × RTX PRO 6000 Blackwell Max-Q (300 W), and dual NVLink RTX A4500 / A5500
NVIDIA Blackwell: RTX PRO 2000 Blackwell 16 GB, RTX PRO 4000 Blackwell 24 GB, RTX PRO 4500 Blackwell 32 GB, RTX PRO 5000 Blackwell 48 GB (spec sheet and store also 72 GB), RTX PRO 6000 Blackwell Max-Q 96 GB
NVIDIA Ada: RTX 2000 Ada 16 GB, RTX 4000 Ada 20 GB, RTX 4500 Ada 24 GB, RTX 5000 Ada 32 GB, RTX 5880 Ada 48 GB (store), RTX 6000 Ada 48 GB
NVIDIA other: RTX A400 4 GB, RTX A1000 8 GB, RTX A2000 12 GB, RTX A4000 16 GB, RTX A4500 20 GB, RTX A5500 24 GB, RTX A6000 48 GB, T400 4 GB, T1000 8 GB, GV100 32 GB (spec sheet), A800 40 GB HBM2 (compute only, no display outputs)
AMD: Radeon PRO W6300, W6400, W6600, W6800, W7400 (spec sheet/store), W7500, W7600, W7700, W7900; the store also listed a Radeon RX 6900 XT
Aux power: 750 W PSU: 2 × 8-pin (6+2) aux connectors; 1350 W PSU: 4 × 8-pin (6+2)

Expansion

Slot 1: PCIe Gen5 x16, full height (top slot)
Slot 2: PCIe Gen4 x8, full height, open-ended
Slot 3: PCIe Gen4 x8 connector wired x4 (through the PCH), full height, open-ended
Slot 4: PCIe Gen4 x16, full height
Slot 5: PCIe Gen4 x8, full height, open-ended
Headers: TBT header for the Thunderbolt add-in card; VROC key header; internal USB 2.0 and an internal USB 3.2 Gen 1 port (for a USB key)

Networking

Onboard: Intel Ethernet Connection i219-LM 1 GbE + Marvell AQC113 10 GbE, 2 × RJ45
Wireless: Optional Qualcomm WCN6856-DBS Wi-Fi 6E 2x2 (up to 3571 Mbps, 2.4/5/6 GHz; 6 GHz on Windows 11 only), Bluetooth 5.3
Optional NICs: Intel i226 2.5 GbE, Intel X710-T2L dual 10GBASE-T, Intel X710-DA2 dual 10 GbE SFP+, Intel E810-DA2 / E810-XXVDA2 25 GbE SFP28 (transceivers extra)

Power

750 W: Platinum, 90-264 VAC, 47-63 Hz, 10 A max; C14 inlet
1350 W: Platinum, 90-264 VAC, 47-63 Hz, 16 A max; C20 inlet
Rails: 12 VA / 12 VB / 12 VC; 1350 W: 42 / 36 / 72 A; 750 W: 36 / 27 / 36 A
Connectors: 750 W: 2 × 4-pin CPU, 10-pin system board, 2 × 8-pin (6+2) aux; 1350 W: 3 × 4-pin CPU, 12-pin system board, 4 × 8-pin (6+2) aux

Ports

Front: 2 × USB 3.2 Gen 1 Type-A, 1 × USB Type-C with PowerShare (spec sheet: USB 3.2 Gen 2x2, 20 Gb/s; manual: Gen 2), 1 × USB 3.2 Gen 2 Type-C, universal audio jack, SD 4.0 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, optional serial, optional 2 × PS/2
Video: Via discrete graphics only
Optional cards: Thunderbolt 4 PCIe card (2 × Type-C, 2 × DP in), USB4 Type-C card, USB 3.2 card, serial port card
Audio: Realtek ALC3246-CG, one internal speaker (2 W average, 2.5 W peak)

Physical

Form: Mid-size tower; carrying handles at the back
Height: 414 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: Setup and Specifications guide (Rev. A07): 16.95-24.28 kg; spec sheet and store: 14.4-21.7 kg
Environment: Operating 10-35 °C, 20-80% RH non-condensing; up to 3048 m

Management

Security: Discrete TPM 2.0, chassis intrusion switch, coin-lock chassis lock, padlock loop, Kensington slot, lockable FlexBay bezel, SafeBIOS (off-host BIOS verification, BIOS resilience/recovery)
Manageability: Store options: Intel vPro Enterprise, vPro Essentials or Intel Standard Manageability; Dell Trusted Device agent; BIOS Secure Erase; SR-IOV and IOMMU support
Firmware: 32 MB + 16 MB SPI flash

Operating systems

Windows: Windows 11 Pro for Workstations; Windows 11 Pro downgrade (Windows 10 Pro factory image); Windows 10 Pro for Workstations downgrade; Windows 10 CMIT Government Edition (China only)
Linux: Ubuntu 22.04 LTS and 24.04 LTS; Red Hat Enterprise Linux 8.6 and 9.3
Other: Dell NativeEdge OS (store option)

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