I have been asked how these two 5970 video cards mine so I've linked a screenshot I took a few weeks ago.
GPU 0 and GPU 3 belong to the 5970 card with the aftermarket cooler. I had them clocked at 770 MHz core, 400 MHz ram.
GPU 1 and GPU 2 belong to the other 5970 card. I had them clocked at 725 MHz core, 400 MHz ram.