ASUS P5QL-E Reviewgotdamojo06 - July 24, 2008
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With not only the rising price of energy out there but also with more and more of the general public being aware of their "footprint" they are going to leave behind on the Earth after they leave, many are wanting to save as much energy as they possibly can to help keep our planet cleaner. This is where ASUS has zoned in on these concerns and added an EPU chip on the ASUS P5QL-E that will help control how much energy is being used, not only during idle times by backing down the amount of energy going through the board, but also by turning features off as they are not needed. Let's take a closer look at this software that was bundled up with the P5QL-E as ASUS's way of "Going Green!"
When you first go to start the EPU Six Engine, if you are like me and have your computer overclocked, you are given a warning saying that you are unable to start the EPU Six Engine with your overclocked settings enabled - you must disable them and restart the system.
When you restart your system, get into the BIOS and disable your overclock and all your CPU configuration settings, get back into Windows and restart the EPU Six Engine, you are going to be hit with another message. This time it is saying that to begin, the EPU Six Engine must be calibrated before you can get into it. Well, thats fine - whatever it needs to do. When you click the Calibrate button, it will bring up a progress bar that does not take that long to calibrate.
Once it has been calibrated, you must again restart your system. When you get back into Windows, you are finally able to launch the EPU Six Engine for the last time. The first screen you are going to see is nice and neat and very "Techy" feeling as some may call it. This screen is where you are going to find all the information about how "green" you are and how much CO2 emissions you have prevented by reducing the power your computer has used. When you click the picture button of the CPU, a window to the left will pop up showing you how much power your processor is currently drawing and how much you are saving just by your processor alone. All of this information is in real-time.
Well you know that I am going to want to test to see if this real time is actually going to do anything, so I opened up the task manager, the resource manager, as well as OCCT:PK to begin a little stress test to see if the wattage usage and the CPU energy savings are going to fluctuate, which they did end up changing. After one and a half quick minutes, the CPU wattage usage had gone up from around 17Watts to over 40Watts while the CPU Energy Savings dropped to 0.
Well let's get down and see what settings we can change, which is where all of the fun is, seeing how much power you can save...or not save. By clicking the button at the bottom labeled "setting" you are able to bring up the four different pre-set settings. The first one you have is a slider bar that you are able to change, that will control how much your CPU Frequency is reduced by. This is from -10% to -30% with the stock setting at -10%. There are also Turn off hard drive and AI Nap times that you can control here which, by default, are set at never. The next auto setting you are only able to change the hard drive and AI Nap time settings. The next two auto settings you are able to change all of the different options. The CPU Frequency slider bar goes all the way from -1% to -50% on these two pages. You can also change the voltage settings for both the CPU as well as the chipset and have them use reduced power during down time. You can set the software to control your fans that are attached to the fan headers on the motherboard here as well. The CPU Loadline can also be altered on these two settings.
I wanted to see how much CO2 Emission I would be able to prevent in a 3 minute time period with all of the settings set to high. I have the CPU Frequency set at -50%, the Loadline Calibration at High, the CPU Voltage Decrease at High, etc. In these three minutes, I was able to save 70.664mg of CO2.
If you were to leave your computer on, like we all know we do, in a 24 hour period with these settings, I would be able to save 33918.72mg of CO2, just by tweaking a few settings on my computer!