just be slightly careful when putting the HS back on,

here is a thread i did about the 6100 cpu easily breaking in half:

viewtopic.php?f=11&t=19313&p=184092&hilit=6100#p184092

if you just put a small fan inside (close to the top) of the HS,

get power from the Molex right there form the hd, wire it up to the 5v side,

It will take that HS down to just warm to the touch. Also the 12v cpu fan running at 5v is whisper quiet