The Tech Report found out that Intel's new Xeon processors with the new G stepping use much less power at idle. Power consumption at idle drops by as much as 25W on some models with this new stepping!
The bigger news that you may hear less about is the advent of the new G stepping of chips across the Xeon lineup. These chips are still manufactured using a 65nm fabrication process, but a combination of changes—including the ability to reach lower CPU multipliers and thus lower clock speeds—leads to much lower power consumption at idle for many Xeon models. Here are the numbers Intel presented to us on the reduction in idle power use for its quad-core Xeons.