Dell Precision 7820 Tower Technical Specifications

System Overview

The Dell Precision 7820 Tower is a highly scalable, dual-socket workstation engineered to tackle multi-threaded compute-intensive workloads such as complex 3D rendering, machine learning inference, scientific simulation, and professional video editing.

1. Processor Options (Intel Xeon Scalable)

Supports one or two processors from the Intel Xeon Scalable family.

• Generation Support:

  • 1st Generation Intel® Xeon® Scalable Processors (Bronze, Silver, Gold, Platinum – e.g., 3100, 4100, 5100, 6100, 8100 series).

  • 2nd Generation Intel® Xeon® Scalable Processors (e.g., 3200, 4200, 5200, 6200, 8200 series, including “R” refresh models).

• Core Count: Up to 28 cores per processor (Maximum of 56 cores total across dual sockets).

2. Core Logic & Memory Architecture

• Chipset: Intel® C621 Chipset (Lewisburg).

• Memory Slots:

  • 6 DIMM slots per processor (Total of 12 DIMM slots in a dual-processor configuration).

• Memory Type:

  • DDR4 2666MHz or 2933MHz ECC Registered (RDIMM) or Load-Reduced (LRDIMM).

  • Note: 2nd Gen CPUs support 2933MHz memory, while 1st Gen CPUs max out at 2666MHz.

  • Supports Intel Optane Persistent Memory (PMem) 100 series modules (on select 2nd Gen Intel Xeon Scalable configurations).

• Maximum RAM: Up to 384GB (using 32GB RDIMMs) or up to 768GB (using 64GB LRDIMMs or select high-capacity modules across 12 slots).

3. Graphics & Expansion Options (GPU)

Supports up to two high-end double-width PCIe x16 graphics cards with dedicated internal power lines.

• NVIDIA RTX / Quadro Professional: NVIDIA Quadro P400, P600, P1000, P2000, P4000, P5000, P6000, GP100, GV100; NVIDIA RTX 4000, 5000, 6000, 8000; NVIDIA RTX A4000, A5000, A6000.

• AMD Radeon Pro: AMD Radeon Pro WX 2100, WX 3100, WX 4100, WX 5100, WX 7100, WX 9100, W5700, W6800.

4. Storage Architecture

Features a modular chassis design with front-accessible, hot-swappable storage options. Supports up to 6x 2.5″ or 5x 3.5″ SATA/SAS drives, and up to 4x M.2/U.2 NVMe PCIe SSDs.

• Front Storage FlexBays: Can be configured to support up to 4x M.2 NVMe PCIe SSDs via hot-swappable carrier bays.

• SATA Ports: Integrated 6Gb/s controllers on-board.

• SAS Support: Optional Broadcom MegaRAID SAS controllers (e.g., 9440-8i or 9460-16i) for SAS HDD/SSD support.

• RAID Configurations: Integrated Intel RSTe (RAID 0, 1, 5, 10).

5. PCIe Expansion Slots

All slots are PCIe Gen 3. Slot layouts depend on single or dual processor installation:

• 2x PCIe x16 Gen 3 slots (Slot 2 and Slot 4 – full height, full length)

• 1x PCIe x16 Gen 3 slot (wired as x8, Slot 1 – full height, full length)

• 1x PCIe x16 Gen 3 slot (wired as x8, Slot 3 – requires CPU 2 to be fully functional)

• 1x PCIe x16 Gen 3 slot (wired as x4, Slot 5 – full height, full length)

• 1x PCI 32-bit legacy slot (Slot 6)

I/O Ports and Connectors

Front Panel Ports

• 2x USB 3.1 Gen 1 Type-A (5Gbps)

• 2x USB 3.1 Gen 1 Type-C (5Gbps, one features Power Delivery/PowerShare)

• 1x 3.5mm Universal Audio Jack

• 1x SD Card Slot (SDXC compatible)

Rear Panel Ports

• 6x USB 3.1 Gen 1 Type-A (5Gbps)

• 1x RJ-45 Gigabit Ethernet port (Intel i219-LM with vPro)

• 1x RJ-45 Gigabit Ethernet port (Intel i210 – standard network port)

• 1x Serial port (DB9)

• 1x PS/2 Keyboard port

• 1x PS/2 Mouse port

• 1x Audio Line-Out port

• 1x Audio Line-In / Microphone port

Dimensions, Weight & Power

Chassis Dimensions

• Height: 16.45 inches (41.79 cm)

• Width: 6.95 inches (17.65 cm)

• Depth: 20.40 inches (51.83 cm)

• Starting Weight: 27.3 lbs (12.4 kg)

Power Supply Unit (PSU)

Toolless, externally removable hot-swap power supply located at the rear bottom of the chassis:

• 950W PSU (90% efficient, 80 Plus Gold, wide-ranging input voltage support).

Software, Manageability & Security

• Operating Systems: Windows 10/11 Pro for Workstations (up to 4 Cores/Plus), Red Hat® Enterprise Linux®, Ubuntu® Linux.

• Dell Optimizer for Precision / DPO: Automatically tunes software configurations for ISV applications (like AutoCAD, SolidWorks, Adobe Premiere).

• Security Features: Trusted Platform Module (TPM 2.0), Lockable front bezel (keyed), Padlock loop, Kensington lock slot, hardware-enforced chassis intrusion sensor.