I also covered 6 of mine with 2 heatsinks, I wouldn't stack them because you might be defeating the purpose of the "Passive" cooling effect. Also if you use a cpu cooler like a Zalman or an SLK 800-900 you get the added benefit of some "overflow" cooling , especially if you get a 92mm fan.
PS. Don't forget the 2 smaller chips that are nearby. This link will get you to some thermal images that show the heat. http://homepage.ntlworld.com/bubo/Mosfets/mosfets.html
Bob
__________________ EP-8RDA+ v1.0 3827 bios
XP1700+ JIUHB 175 x 12.5=2187MHz. 1.75v
2 x 512MB Crucial pc3200 10, 2, 2, 2.0
THERMALRIGHT SLK900u 92mm Zalman fan, Enlight 420 watt, AIW 9000 Pro 64mb DDR agp4x, voltage mod 1.85v
Home made NB cooler  |