Intel QX9770 Design Guidelines - Page 65
Table 10. Board Deflection Configuration Definitions, Board Deflection Definition
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LGA775 Socket Heatsink Loading Table 10. Board Deflection Configuration Definitions Configuration Parameter d_ref Processor + Socket load plate yes Heatsink no d_BOL yes yes d_EOL yes yes BOL: Beginning of Life EOL: End of Life Figure 26. Board Deflection Definition d1 d'1 Parameter Name BOL deflection, no preload BOL deflection with preload EOL deflection d2 d'2 Thermal and Mechanical Design Guidelines 65
LGA775 Socket Heatsink Loading
Thermal and Mechanical Design Guidelines
65
Table 10. Board Deflection Configuration Definitions
Configuration
Parameter
Processor + Socket
load plate
Heatsink
Parameter Name
d_ref
yes
no
BOL deflection, no
preload
d_BOL
yes
yes
BOL deflection with
preload
d_EOL
yes
yes
EOL deflection
BOL: Beginning of Life
EOL: End of Life
Figure 26. Board Deflection Definition
d1
d2
d’1
d’2