i have 2 cards with the dcu ii coolers and unless you either brace them so they dont sag or have a silverstone (inverted mobo)case,,, your temps will not be anything special....
however....
if properly installed....(asus' fault not toms) you'll have a hard time hitting 60c even cf-sli'd and oc'd....
idle temps are a pedestrian 30-33c but thats idle
just my exp...
bTx