Spire SPB601B3 VertiCool II HSF Cooler
 

Spire has stamped arrows in the shroud to remind the user how the air flows
through the cooler, and should be installed with the exhaust directed toward
the rear of the case. As the cooler base is slightly smaller than the I.H.S of
my CPU, I elected to apply the supplied thermal paste to the cooler base,
rather than the CPU itself.