New set-up for crossfire 2x 6870?

Hardware Hub GPU
1

i want a new set up because my 6870 going overhitting 95+ my hole game freez got any idee wat to do?

greetz,

step

2

ln2? liqued cooling? don't use crossfire unless you want to see 2 fps while you're producing 80

3

no i got 2 x 6870 air cooled but they got 95+ degree and my game freez i want a new videocard some ideas?