William A. Mahaffey III wrote: > Monarch lists 3 1U all-copper-no-fan heat sinks that I bet would work. > Please note the speculative nature of that recommendation !!!! I have > been aiming for an Opteron based system for a while now, that's why I > joined this list :-). I didn't find anything on NewEgg. I'll see what Monarch has. AMD's stock fan and heat sink is about 50mm high. If I can get it down to about 25mm I should be good to go. Does anyone have any notes on heat sink-only cooling. I'm sure it depends on airflow in the case (which is good in my case) but I'd like to hear any experiences.