LGA 3647 is an
Intel
Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California, Santa Clara, California. It is the world's largest semiconductor chip manufacturer by revenue, and is one of the devel ...
microprocessor
A microprocessor is a computer processor where the data processing logic and control is included on a single integrated circuit, or a small number of integrated circuits. The microprocessor contains the arithmetic, logic, and control circu ...
compatible
socket used by
Xeon Phi x200 ("Knights Landing"),
("Knights Mill"),
Skylake-SP,
Cascade Lake-SP/AP, and
Cascade Lake-W microprocessors.
The socket supports a 6-channel memory controller, non-volatile
3D XPoint
3D XPoint (pronounced ''three-D cross point'') is a discontinued non-volatile memory (NVM) technology developed jointly by Intel and Micron Technology. It was announced in July 2015 and is available on the open market under the brand name Optane ...
memory DIMMs,
Intel Ultra Path Interconnect
The Intel Ultra Path Interconnect (UPI) is a point-to-point processor interconnect developed by Intel which replaced the Intel QuickPath Interconnect (QPI) in Xeon Skylake-SP platforms starting in 2017.
Interconnect
UPI is a low-latency c ...
(UPI), as a replacement for
QPI, and 100G
Omni-Path interconnect and also has a new mounting mechanism which does not use a lever to secure it in place but the CPU cooler's pressure and its screws to secure it in place.
Variants
There are two sub-versions of this socket with differences also in the ILM (
Independent Loading Mechanism, pitch of center screws changed slightly and a more visible one being that the guiding pins are in other corners). The processor socket and the matching notches on the processor are at different location, preventing insertion of an incompatible processor and preventing use of the wrong heatsink in a system. The more common P0 variant has two sub-options for heatsink mounting - designated as square ILM and narrow ILM, choice of which depends on the server and mainboard design (likely based on space constraints).
* LGA3647-0 (socket P0) used for
Skylake-SP and
Cascade Lake-SP/AP processors
* LGA3647-1 (socket P1) used for
Xeon Phi x200 processors
References
Intel CPU sockets
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