Dell SYSTEM BOARD for Precision T7820 DDR4 Workstation Motherboard 0804P1 / 0G7W4R

Technical Specifications & Product Data Sheet

1. General Identification

• Part Numbers (DP/N): 0804P1 (Alternative P/N: 0G7W4R)

• Description: Dell Precision Tower 7820 (T7820) Workstation Motherboard

• Manufacturer: Dell Inc.

• Component Classification: System Board / Motherboard Replacement Part

• Condition Compatibility: Fully interchangeable / Form-Function-Fit equivalent (Cross-Reference Parts)

2. Processor / CPU Architecture

• Socket Type: LGA3647 (Socket P)

• Processor Support:

  • Intel® Xeon® Scalable Processors (1st Generation / Skylake-SP)

  • Intel® Xeon® Scalable Processors (2nd Generation / Cascade Lake-SP)

• Multi-Processor Capability: Dual-socket capable.

  • Note: Supports 1st CPU natively on the motherboard. The 2nd CPU requires an optional proprietary CPU/Memory Riser Expansion Card.

3. Chipset & Memory Parameters

• Chipset: Intel® C621 (Lewisburg)

• Memory Type: DDR4 Registered ECC (RDIMM) / Load-Reduced ECC (LRDIMM)

• Memory Speed: Up to 2933 MHz (Depends on CPU capability)

• Onboard Slots: 6 x DIMM slots (Supports up to 192GB RDIMM or 384GB LRDIMM natively)

• Maximum System Capacity: Up to 384GB (with single CPU) or up to 768GB / 1.5TB (with dual CPUs via the expansion riser card)

4. Expansion Slots & I/O Interfaces

• PCIe Slots (Physical Layout):

  • 2 x PCI Express x16 Gen 3 (Slot 2, Slot 4)

  • 1 x PCI Express x16 Gen 3 (wired as x8 mechanical)

  • 1 x PCI Express x16 Gen 3 (wired as x4 mechanical)

  • 1 x PCI Express x4 Gen 3

  • 1 x PCI legacy slot

• Storage Interface:

  • Intel® Rapid Storage Technology enterprise (RSTe) SATA controller

  • Support for PCIe NVMe SSDs via specific M.2 flexbays / PCIe adapters

• Network / LAN: Integrated Intel® i219-LM Gigabit Ethernet controller (10/100/1000 Mbps)

• Audio: Integrated Realtek ALC3234 High Definition Audio

5. Rear Panel I/O Ports

• 1 x RJ-45 Network Gigabit Port

• 6 x USB 3.1 Gen 1 Ports

• 1 x Serial Port (COM)

• 2 x PS/2 Ports (Keyboard & Mouse)

• 1 x Audio Line-Out Port

• 1 x Audio Line-In / Microphone Port