Dell 804P1 Precision T7820 Tower System Board The Dell 804P1 is the system board (motherboard) for the Dell Precision T7820 Tower workstation. Here's what you should know about it: Key Features and Specifications: Dell Part Number: 804P1 Socket Type: LGA 3647. This socket supports Intel Xeon Scalable processors. The T7820 can be configured with one or two CPUs. The 804P1 board supports a single CPU configuration. For dual CPU configurations, a different system board and potentially a riser card are required. Chipset: Intel C621 (Lewisburg). Memory: Supports DDR4 ECC memory. There are 12 DIMM slots in a dual-CPU configuration (6 per CPU). For a single CPU configuration with the 804P1 board, there will be 6 DIMM slots. Supports six-channel memory architecture when two CPUs are installed. With a single CPU, it will likely operate in a three-channel configuration. Maximum memory capacity depends on the CPU and the type of DIMMs used, but can go up to 768GB or even 1.5TB with two CPUs. Warranty: 60day