The default speed tests can sometimes be a good place to see how much headroom you will have to work with when overclocking. If a heat sink sucks at default speeds then the odds are that its going to suck even harder when you crank up the juice. The main thing that stands out to me here is the fact that the Crossover kit with ONE fan was able to score 45 degrees when the CPU was at full load and the the same score was made by the Alpha under Idle conditions.