First off, almost everyone here knows more about amd overclocking than I do so I defer what you can achieve with them. A standard hsf should be fine when not ocing but better cooling is necessary when you do oc. (like your fop38). You need some sort of heat conducting pad, paste, silicon grease etc. to fill the air gaps and help transfer the heat away from the chip to the sink. Arctic silver II can be found for about $8.50 plus shipping and gets temps down several deg. over the pads and silicon grease. Probably well worth the $$ if going to push your system hard. The 3 to 4 pin adapter, I only mentioned it cause I read:
"The most powerful 60X60X25mm fan ever created. Spinning at 6800 RPM, this fan provides 38 CFM of airflow. Very powerful indeed. If you want to go to the extreme, this fan is for you. But be aware, this fan is quite noisy so if you don't mind the noise this fan is an excellent choice for high performance. The Delta fan comes in a 3 pin power connector. Since it draws 4 watts of power, it is not recommended for this fan to plug into any motherboards except some of the newer mohterboards from Asus that has 4 watts rating for their fan headers. The fan will burn out the motherboard fan headers because most boards will not handle that kind of power. So a 3 to 4 pin power connector is Highly recommended for this fan." This came from the <A HREF="http://www.inflowdirect.com/" target="_new">inflowdirect.com</A> website. Scary huh? So maybe you won't need the adapter since you have the asus mb but they have it for $2.00 if you do. Hey, thats a nice chip and its better to make sure you are right before you crank it way up. and make sure you monitor your temps. Btw, I heard a guy on tv say he started his chip up for about a second or 2 w/o a sink on and instantly fried it. sorry for the long post, sometimes I run on too much. good luck.
<b><i>"Bad advice is expensive, Good advice is priceless"