I'm nowhere near an expert in this, but I've heard that electromigration in the really thin wires can cause wearout over time. I imagine that this is probably n

I'm nowhere near an expert in this, but I've heard that electromigration in the really thin wires can cause wearout over time. I imagine that this is probably near-negligible in the micrometer-sized interconnect layers in the 286 but a non-negligible issue in 14nm.