The IHS (Integrated Heat Spreader) is a copper plate that is tinned and placed on the CPU's Core to do two functions:
1. Spread the heat and take it away from the Core an on to the heatsink.
2. Protect the core from uneven clamping pressures of heatsinks that are not mounted correctly.
IHSs are found on older processors (PIIs), Pentium 4 processors and the newest offering from AMD (64bit XT right?)
Someone correct me if I have been misinformed...
