OCC has published a review on the Inno3D GTX 470 Hawk

One look at the Hawk's cooling solution tells you that this is not your standard GTX 470. This large cooling solution looks like it came straight out of the Arctic Cooling catalog with its three fans, heatpipe construction and massive fin array. This large cooling solution is built to tame the immense heat generated by the large die size. It will also take up in excess of two expansion slots, making it a 3 slot solution. Hope you have room!

Inno3D GTX 470 Hawk Review - Overclockers Club