another tip for mounting the cheepo HSF. I would use 4/32 bolts. I used this on my F5200 with a stock AMD HSF and now, with no fan, i can overclock from 250 core to 350 core. I do have a case fan blowing on it. If i added a fan i am sure it would help ALOT. The bolt on method adds more security and also the option of removal. when i did mine, i used rubber bands to place the sink where i wanted it on the card, a thin felt tip pen (i used Sharpie tm) to mark on the base of the HS from the back of the card thru the mounting holes.
Then i got a nice drill bit that was about 1/4" wide. I drilled on each of the holes- Al and Cu are both easy to drill through.
After that i lapped the HS/F. to mount i simply used my nuts to force the bolt all the way through the fins. After the bolt was reting on the base i inserted the HSF onto the card with ceramique. I put in 1/2" nylon spacers to protect against shorting and tightened the bolts. You can alwase use a lock washer if you want a little more security.
*Note: if i could have found nylon bolts that were thin enough, i would ahve used them - they are very strong and remove all risk of shorting the card although the metal bolts shouldnt short the card as there are no traes passing along the inside of the mounting hole.