I have had my mbp 2008 unibody for quite a while now, and it has always annoyed me that I could not use my Samsung 233RZ 120hz properly with it, since I only had a DVI-D Single link adapter. The reason behind this is I think that paying 100 for a dual link adapter is a little bit over the edge. So now I tried this product instead that claim it is a Mini display to DVI-D Dual link cable, but it still doesn't work for me. And I even read on the apple website from users that their dual link adapter doesn't even ensure 120hz capability. Is this really true? I don't want to discuss wether my eye can even see the difference between 60hz and 120hz, because I can. It is very noticeable.