The Dell Intel Xeon Silver 4309Y is a refurbished server processor for adding compute capacity to a server system. The exact part number is 338-CBXY-RFB.
It has 8 cores and a 2.80 GHz base frequency, with hyper-threading support for up to 16 threads. The listing also specifies support for DDR4 memory.
This processor is intended for server environments, including data-centre and virtualisation workloads. Its refurbished condition and core specifications are stated on the product listing.