What should I "sink" on my MB?

[freecableguy]

http://home.comcast.net/~kjboughton/DSC00450.JPG

http://home.comcast.net/~kjboughton/DSC00451.JPG

You can see where I plan on placing the small heatsinks on the "blocks." I am not really sure what these are. In fact, I don't even know if they get hot...which is why I am asking. Of course, the PLL chip has a heatsink and the SB will too. The NB will be cooled with the stock unit. AS5 has already been applied.

Is this good? What else should I consider heatsinks? The 16 small MOSFETs?

[Jupiler]

Best thing to do is to try the board outside the case and see if the smaller mosfets get hot or not. Some will get very hot, others won't.
But if you already have the little sinks, then why not put them on the mosfets. Can't harm.