Originally Posted by Diffident
Are heatsinks even necessary? I'm asking since server memory doesn't have heatsinks.
Depends on the environment, a heatsink can make the difference between stability and instability.
I used so-dimms in a laptop with and without heatsinks. it shaved off 5c for the laptop dimms that were overclocked. Without the heatsinks, the dimms couldn't OC as high because the 5c made all the difference between stability. Laptops also have bad airflow.
Server memory isn't overclocked, it runs at jedec. It doesn't run hot, like ever. Server environments also ALWAYS have major airflow throughout the entire chassis, which also cools the dimms and the server room is always blasting with airconditioning, so that makes a HUGE difference. That's why server memory doesn't have heatsinks.
Heatsinks make a difference for negative pressure builds
Heatsinks make a difference for positive pressure builds with low airflow
Heatsinks on overclocked dimms can make the difference between requiring a fan over the dimms and not requiring a fan over the dimms. (meaning without a heatsink, consumers may be forced to spend more, which is no bueno).
Also, naked dimms look stupid/ugly, they are better off in a sleeper build.
Heatsinks are important and are non negotiable for consumer products, with the common sense exception of watercooling the ram
. ln2/exotic cooling is another story obviously.