I saw a picture of the Zalman VF3000a on a 6870 and it didn't look bad but it hung off of the back of the card quite a bit. The heatsink on this model looks like it's more in the center of the cooler. It looks great on that 5850 as if it was made for it. I want one of these for my 6870. Hopefully it comes out looking half as good as yours. You sold me. Crap, doesn't look like this model would fit a reference card it looks a lot better than the vf3000a too.