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Just realized why those old thermal pads dry out so fast
Pulled apart a 2019 Dell XPS last week and the factory thermal pads had turned to chalk. Looked up the spec sheet, they were 6 W/mK silicone pads, rated for 5 years but these died in 4. The kicker is the aluminum heatsink alloy, it reacts with the pad's oil over time and sucks it dry. Has anyone else seen this pattern on specific models, or is it just Dell's cheap sourcing?
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val94913d ago
The real killer might be the pad's mounting pressure, not just the oil reaction. Those XPS boards use a stiff bracket that holds the heatsink down tighter than most laptops. High pressure squeezes the oil out faster, like wringing a sponge. The pad gets thin and hard long before the chemical breakdown starts. I have seen the same thing on some Lenovo ThinkPads from the same year, they use similar clamp designs. Thermal paste lasts longer there because it does not rely on oil to stay soft. Nobody checks the mounting torque specs, but that is half the battle.
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