Swiftech recently launched the Apogee GTZ. The sucessor of the Apogee GTX has an improved attachment system so that the cooling block can be installed without requiring additional tools. 

Swiftech's Apogee GTZ

The Apogee GTZ has a higher cooling capacity than the GTX. According to Swiftech, this is because of the new coldplate design. It has a copper structure with 225 µm small pins. The bottom of the block is also polished. The Apogee GTZ comes with an attachment kit for Socket 775. Similar kits for socket 771, 603, 604, AM2, F, 754, 939 and 940 can be purchased seperately.

  The coldplate with 225 µm small pins

Swiftech's Apogee GTZ will become available by the end of August, additional information can be found here.