Guys, check this out! I hope it's not old news

A new useful feature from GIGABYTE that will benefit users who leave their comps on almost 24/7, me included! An ASUS EPU equivalent if not better
Introducing...
GIGABYTE's Dynamic Energy Saver (DES)http://www.giga-byte.com/FileList/WebPage/...es-overview.htm» Click to show Spoiler - click again to hide... «
GIGABYTE Dynamic Energy SaverGIGABYTE Dynamic Energy Saver is a revolutionary technology that delivers unparalleled power savings with the simple click of a button. Featuring an advanced proprietary hardware and software design, GIGABYTE Dynamic Energy Saver is able to provide exceptional power savings of up to 70% and up to 20% improved power efficiency without sacrificing computing performance.
How Does GIGABYTE Dynamic Energy Saver Work?The unique multi-gear power phase design of GIGABYTE's Dynamic Energy Saver allows for the most efficient switching of power phases depending on CPU workload. When the CPU workload is light or at idle, the Dynamic Energy Saver downshifts gears and only allows the minimum required power phases needed to accomplish the task to operate. By turning off the power phases that are not need, GIGABYTE's Dynamic Energy Saver is able to dramatically save power, up to 70% that would normally have been wasted. As soon as the workload increases, Dynamic Energy Saver recognizes that more power is needed and is able to shift into higher gear, turning on power phases as they are needed.
Unlike some power saving designs that only offer 2 gears, GIGABYTE's Dynamic Energy Saver features multiple gears, allowing the CPU to maintain optimum power efficiency from light all the way to heavy loading. In a 2 gear only design, each gear needs to operate longer at less than optimum efficiency, causing gaps in power efficiency. With the ability to switch on and off gears before they start to loose efficiency, GIGABYTE's Dynamic Energy Saver is able to provide up to 20% improved power efficiency.
One-Click Power SavingsGIGABYTE's user-friendly Dynamic Energy Saver interface allows you to turn on and off the power saving features with a simple click of the Dynamic Energy Saver button. Not only can users see real-time CPU power consumption in Watts, but once Dynamic Energy Saver is enabled, users can also see how much power they are actually saving.

Dynamic LED DisplayGIGABYTE Dynamic Energy Saver enabled motherboards feature an LED display located directly on the motherboard, allowing users to see the dynamic gear shifting in real-time. As each gear is activated, a color-coded LED representing the gear lights up.

Etc. etc., details can be found on the link provided
I bought a DS3R (Was considering the DS3L but later decided not to) last month because most of the shops here in Penang were out of stock for the DS3, paid more for the RAID feature which I do not need but got something back in return. Hehe... Only
revision 2.1 boards support DES, and mine is one of them. No wonder I can see LEDs in between the RAM slots lighting up when I power on my computer, I initially thought it was a debugger of some sort
The following motherboards can be upgraded to enable Dynamic Energy Saver:
GA-P35-DS4 rev. 2.1 / GA-P35-DS3P rev. 2.1 / GA-P35C-DS3R rev. 2.1 / GA-P35-DS3R rev. 2.1 / GA-P35-DS3 rev. 2.1
Seems like anything below the DS3 will not have DES

Added on January 10, 2008, 11:38 pmP/s: Read the 3rd paragraph "Unlike some power saving designs that only offer 2 gears..." GIGABYTE is refering to ASUS EPU