I have the 9700 and its a great HSF. Very comparable to the Thermalright Ultra 120 if you read some reviews you will see they are very close together. I wrote this a while back it was a review and instal tips on the 9700. Average temp drops after AC5 got settled in are around 13C drop. If you buy it I do recommend you take off the fan when installing it makes it much easier.
Heres a couple of shots when I was installing it on my board just to give you a idea of the size. Freestyle is right after the brackets in place it has no problem being supported.