However, the most important change for the LGA-1700 socket might be the Z-stack, i.e. the distance between the top edge of the IHS and the top of the motherboard. Here, the distance shrinks by more than a millimeter and the graph clearly shows that you could not generate enough contact pressure with the old mounting kits to cool the CPU accordingly well. To avoid the temptation to mount the old cooler anyway, the hole spacing of the holes for the fasteners has also been increased by 3 mm each – better safe than sorry.
The following table shows again the relevant details and also the specifications that are really important for the cooler manufacturers:
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 |
The following two drawings now show the implementation on a normal ATX board for the top and the bottom side (with the backplate) including the important leave-out areas:
On the next pages I have added the most important drawings for the mechanical mounting and the socket as such. Here the interested reader can now simply browse through and rummage in the details. There is no more accompanying text necessary from my side.
- 1 - Introduction and Socket Comparison
- 2 - All Data for the Perfect Mounting
- 3 - Keep-In Volume (1 / 2)
- 4 - Keep-In Volume (2 / 2)
- 5 - Mechanical Details (1 / 5)
- 6 - Mechanical Details (2 / 5)
- 7 - Mechanical Details (3 / 5)
- 8 - Mechanical Details (4 / 5)
- 9 - Mechanical Details (5 / 5)
- 10 - Boxed Cooler (1 / 3)
- 11 - Boxed Cooler (2 / 3)
- 12 - Boxed Cooler (3 / 3)
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