@felix-mostly just a good feeling lol. seriously, some raid controllers will throttle if they overheat, so yes there are a few advantages, key being less forced air needed and no throttling. any evidence of endurance increases would be anecdotal at best.
@Tutto- hit it with a hairdryer, on LOW first. they use a thermal glue that is sticky as hell. so warm the Heatsink up a bit with a hairdryer to loosen it, then slide it off, do not pull straight off. so you would just slide it off the edge of the chip.