Sudhian Media has posted a review on Gigabyte's 3D1 video card

When it comes to video horsepower, computer enthusiasts are insatiable, demanding, consumers. Give us one video card solution, and a certain stripe of user demands two. Given two, prompt speculation on whether or not those two could be combined into a single card begins. Given dual-GPU / single-card solutions, its inevitable that someone, somewhere will
request a 4-way solution-and they'd like it to be quiet, SFF-compatible, and, of course--affordable.

Two 6600GT's in One: Gigabyte's 3D1