I loved my 680i, it was a great overclocker and had TONS of features, from virtually anything you want to tweak, can be done, and it was also future proof for a while.
It is really overated, I got my box for my 965WH and it said Intel Clear Video Tech. was a feature, I looked it up on Intel's website and it said it had Pixel Shader Model 3.0. Then I tried playing a simple game that required pixel shaders and it said my video card didn't support pixel shaders. I did have the appropriate drivers installed.