If you got patience, you could probably make something out of a cardboard tube so that the airflow would be directed out of the case. Or you could put a fan on the side panel right above the heat sink and have them both exhaust the air out.yup, on the older cpu stuff not needing heatsinks, but power transistors did need some heatsinks havent tested the blowing down vs sucking up heat ... think its sorta the same issue in that the air still has to make a 90degree turn within the heatsink but should work better for exhausting ( less turbulence ) for amd cpu's, i tend to blow air sideways across the heatsink instead of onto the cpu
Calyth