Cleaned my Zalman AlCu and my temps went down 6C under load

Man those tiny fins sure do get clogged up and compressed air wasn't much help because it just jammed the crap down further. Had to use my little finger and a pen cap to scrape the stuff off.

I'm to lazy to remove it for cleaning

Yes Zalman heatsinks, especially the 6000 series because of the radial fins, get very dusty. Can be hard to clean too.

Just a word of caution to everyone

oh better clean mine when i get it