● Covered by 1 source · 1 reportLow impact1 neutral
Athlon XP CPU Damaged During Heatsink Removal, Highlighting Fragility of Flip-Chip Packaging
Key points
- A piece of silicon detached from an Athlon XP CPU during heatsink removal.
- The damaged CPU continued to function despite the missing piece.
- The incident highlights the fragility of flip-chip PGA packaging from the early 2000s.
- Both Intel and AMD moved away from exposed-die packaging due to mechanical damage issues.
Unexpected CPU Damage
During CPU testing, an Athlon XP processor experienced physical damage when its heatsink was removed. A significant piece of the silicon die detached and remained stuck to the heatsink. Despite this visible damage, the processor continued to operate normally.
Fragility of Flip-Chip Packaging
The incident points to a known vulnerability of flip-chip PGA packaging used by AMD and Intel around 2000. This design exposed the silicon die directly, making it susceptible to mechanical stress. Uneven pressure during heatsink installation or removal could lead to cracking or chipping of the die, as seen in this case.
Industry Shift to Lidded CPUs
Both Intel and AMD eventually moved away from exposed-die flip-chip packaging due to these fragility issues. Intel adopted lidded CPUs for its Pentium 4 and later Pentium III-S lines, while AMD used lidded designs for Opteron processors. Lidded packaging provides better protection for the silicon die, making CPUs more robust against mechanical damage, though the motherboard socket became a new point of vulnerability for Intel's LGA designs.
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Primary sources
GitHub raszpl/sigrok-diskReporting from
An Athlon XP processor sustained physical damage, with a piece of silicon detaching during heatsink removal, yet remained functional. This incident illustrates the mechanical fragility of early 2000s flip-chip PGA CPU packaging, which exposed the silicon die directly.