OCZ announced a new kit that is made just for AMD AM2 socket. The new kit uses the AM2 processors memory controler, as it has an extended column address range.
The new modules works at 667 MHz at 5-5-5-15 latencies and are cooled with OCZ's Titanium XTC Heatspreaders. This 4GB kit works at 1.8-2.0 Volts but this can be raised to 2.1V without invalidating OCZ Lifetime Warranty, thanks to OCZ's EVP (Extended Voltage Protection).
With 11 column address bit support by the AM2 memory controller, the number of addresses in each row or page can be as high as 2048 individual entries for a page size of 16kbit. Unlike modules based on standard 10-bit column address chips with an "8k" page size, the new Titanium AM2 Special Edition modules takes advantage of the AM2 controller’s feature set and provide a single rank solution with 2GB density using "16k" pages.
This allows the controller to stay "in page" twice as long compared to standard memory architecture, thereby achieving unparalleled performance.
You can check out more information on OCZ.