Socket SP6 (LGA 4844) is a zero insertion force land grid array CPU socket designed by AMD supporting its Zen 4c-based Epyc Siena server processors that launched on September 18th, 2023. It is designed for server systems targeting infrastructure and edge computing segments.
History
In November 2022, AMD launched the SP5 socket alongside its Epyc 9004 series of processors, codenamed Genoa. The large physical socket and thermal footprint excluded SP5 from certain edge applications. Socket SP6 was created as a smaller variant of socket SP5 with fewer pins and less memory support, reducing the footprint from 72×75.4 mm to 58.5×75.4 mm, identical to that of Socket SP3.
Socket SP6 will serve segments of the server market where performance is not a priority but cost, value, small footprint, and low power consumption / heat dissipation are. Examples of this are infrastructure computing and edge computing. Currently, it only supports the Epyc "Siena" lineup of processors. It supports processor TDPs up to 225 W.
On October 19th, 2023, AMD released the Theadripper 7000 family, utilizing the sTR5 socket, which is physically identical to the SP6 socket, but not electrically compatible.
Features
Supports 6 channels of DDR5 ECC RAM
Supports 96 lanes of PCIe 5.0
Supports 48 CXL 1.1 lanes (as a subset of the PCIe 5.0 lanes) Single socket only
See also
Socket AM5, contemporary desktop socket from AMD in use since 2022
Socket SP5, server socket for mainstream and high power Genoa and Bergamo series processors