Intel Core2 Duo Desktop Processor, Intel Pentium Processor, and Intel Pentium 4 Processor 6x1 Sequence

LGA775 Socket Heatsink Loading

Thermal and Mechanical Design Guidelines 73

Figure 29. Board Deflection Definition

d’1

d’2

A.2.3 Board Deflection Limits

Deflection limits for the ATX/µATX form factor are:

d_BOL - d_ref≥ 0.09 mm and d_EOL - d_ref ≥ 0.15 mm

And

d’_BOL – d’_ref≥ 0.09 mm and d_EOL’ – d_ref’ ≥ 0.15 mm

NOTE:

1. The heatsink preload must remain within the static load limits defined in the processor

datasheet at all times.

2. Board deflection should not exceed motherboard manufacturer specifications.