De Heatsink Guide heeft nog wat info over electromigration en overgeklokte Celerons die er plotseling mee kappen:
In the past time, I've heard some reports from people who had sucessfully overclocked their Celeron CPUs for a few months, and suddenly started having frequent crashes, even though the system was stable before.
The problem you are having is electromigration, which is - to put it into simple words - deterioration of the CPU core.The electromigration process occurs at a much faster rate if the CPU temperature is higher. Thus, the only way to avoid electromigration is to cool your CPU more efficiently.
[...]The statement "My overclocked system runs perfectly stable, so why should I care about better cooling?" is pointless. If your CPU runs too hot, then you need additional cooling - even if everything runs stable right now.
Koelen die zooi dus!