Atomic? no, Sapphire have a even higher HD3870 for you
Sapphire never let us down, They are now working on another version HD3870. This edition even higher than the Atomic version which just released to reviewers. The card have a dual slot cooler, four heatpipes totally and a very high Frequency.

The GPU frequency is at 904MHz, and core tempature is only 60 centidegree after the card done a 3Dmark05 and 3Dmark06 test. Source said Sapphire did not raise the voltage.
Expreview

Vypada to na chladic podobny tomu ze 7800GTX.