Details on Intel LGA1700 socket for Alder Lake CPUs have been leaked

Published: 28th Jun 2021, 06:51 GMT   Comments

Intel Alder Lake LGA1700 socket detailed

Igor Wallosek from Igor’sLAB, revealed further details on the new rectangular LGA1700 socket that will debut with the upcoming 12th Gen Core “Alder Lake-S” series later this year.

First and foremost, Igor’s leak finally confirms the shape of the CPU mounted in the socket. The rectangular shape was so far only seen in a very early photograph of the engineering sample that we leaked last year. Newly leaked diagrams also do show this design. More importantly, though, Igor revealed the exact dimensions of the socket. as well as a new thermal solution hole pattern. While the slide featuring the Socket V0 has already been shared by Igor, this time he added the table with socket hole dimensions. It appears that Intel will be going away from a 75×75 mm hole pattern to 78×78. This will definitely render some coolers incompatible, especially since Alder Lake’s new integrated heat spreader can now be installed a bit lower (6.5 mm vs 7.3mm).

Intel LGA1700 socket for Alder Lake CPUs, Source: Igor’sLAB

Furthermore, Igor shared important specifications of the new recommender cooler, including minimum, recommended, and maximum pound forces. This table (shared in exact copy) also mentions the mysterious LGA-18XX cooler that we reported on over the weekend.

Specifications
Intel LGA1700 Socket details
IHS to MB Height (Z-Stack, validated range):6.529 – 7,532 mm
Thermal Solution Hole Pattern:78 x 78 mm
Socket Seating Plane Height:2.7 mm
Maximum Thermal Solution Center of Gravity Height from IHS:25.4 mm
Static Total Compressive Minimum:534N (120 lbf), Beginning of Life 356 N (80 lbf)
End of life maximum:1068 N (240 lbf)
Socket Loading:80-240 lbf
Dynamic Compressive Maximum:489.5 N (110 lbf)
Maximum Thermal Solution Mass:950 gm
Important Note:A Keep In Zone is introduced for LGA17xx-18xx thermal solutions. Two volumes are provided.
The Asymmetric volume provides the maximum available design space. The Symmetric volume
provides for designs to be rotatable on the board. The thermal solution under load should fit within the volume

Intel LGA1700 socket details, Source: Igor’sLAB

An LGA1700 socket render with CPU preinstalled appears to confirm the rectangular shape of the new 12th Gen Core series:

Intel LGA1700 socket, Source: Igor’sLAB

Some diagrams even show a recommended ATX motherboard layout with necessary leave-out areas. This is also important to cooling manufacturers, as they need to ensure their cooler will not touch any other component.

Intel LGA1700 socket, Source: Igor’sLAB

A 3D render of the socket itself has also been shared. This diagram shows how the pins will be position on the socket. It appears that the socket will be split into two L-shaped pin areas. It matches the pad layout on the engineering sample, a photo of it is attached above.

Intel LGA1700 socket, Source: Igor’sLAB

Intel LGA1700 socket, Source: Igor’sLAB

Intel Alder Lake-S series is now set to debut in few months. Intel did not reveal the official launch date yet, but rumors seem to suggest it may arrive in the fourth quarter. Obviously, at this point, we should expect to see 12th Gen Core series performance leaks any moment now. From what we learned, qualification samples have been distributed and are now extensively tested on new 600-series motherboards.

Source: Igor’sLAB




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