Intel Xeon Gold 5218R Server Processor (SRGZ7) – 20-Core, 40-Thread, Up to 4.0GHz, LGA 3647, 27.5MB L3 (Refurbished)

The Intel Xeon Gold 5218R (SRGZ7) is an LGA 3647 server processor with 20 cores, 40 threads and boost clocks up to 4.0GHz. Built on 2nd Gen Xeon Scalable Refresh (Cascade Lake-R), with 27.5MB L3, it is aimed at IT teams, MSPs and homelab builders upgrading or populating servers.

Data-center core counts at a practical price.

Right-Sizing Server Compute Without Replacing the Platform

When a server runs out of CPU headroom, replacing the whole platform is rarely the cheapest option. Many teams can extend the life of existing hosts by upgrading to a higher-core processor that fits the same socket, or by adding a second matched CPU.

The Intel Xeon Gold 5218R delivers 20 cores and 40 threads on the LGA 3647 platform with 27.5MB L3 and DDR4-2667 ECC, 6-channel memory support. That makes it a practical choice for virtualization, databases, file and web services, and homelab clusters built on 2nd Gen Xeon Scalable Refresh (Cascade Lake-R).

Cores, Clocks and Cache in Practice

With 20 cores, 40 threads, up to 4.0GHz and 27.5MB L3, the Intel Xeon Gold 5218R handles virtual machines, containers and database workloads with headroom. Power is rated at 125W TDP.

Platform and Connectivity

The LGA 3647 socket supports DDR4-2667 ECC, 6-channel and 48 PCIe 3.0 lanes. A discrete graphics card is required for display output.

Setup Instructions

How to Install the Intel Xeon Gold 5218R

1. Confirm your server motherboard supports the Xeon Gold 5218R on the LGA 3647 socket and update BIOS/firmware first.
2. Power down, discharge static and remove the existing heatsink and processor carefully.
3. Align the CPU with the socket key, install it, apply fresh thermal paste and refit the heatsink to the specified torque.
4. Boot to BIOS, confirm cores and memory are detected, then load your hypervisor or OS and verify performance.