Intel confirmed our earlier reports of 2MB L2 cache 6XX desktop processors. These also have power saving Speedstep stuff built in, and provide "headroom" for the future. They come out at the end of the month, it appears.
In a conference call for analysts and the press, the firm said that the NX flag provided better security and the 6XX series even saved on electricity. Heck, a power cut saves on electricity.