BIOS Features (cont’d)
For FX processors, you have the option of moving the multiplier UP to 20x or all the way down to 5x making overclocking the HT bus a very viable option for enthusiasts.
Probably the weakest link, the CPU voltage can be pushed only up to 1.65v.
This BIOS feature starts the odd, proprietary features that Asus and other motherboard manufacturers are falling into. From what I can tell, these AI Overclock settings overclock the processor by the 10% shown, all the time when enabled.
The AI N.O.S. feature differs by only overclocking the processor when the system load has reached a certain point. While there is little information on this feature (there are no specifics in the manual and Asus isn’t really giving much information), I’d wager that the feature tests for CPU utilization and when it hits 100%, they up the HT bus by the percentage selected by the user. Otherwise, when the system is not loaded heavily, the processor is not overclocked and remains in its default state.
Here is one of the major players in Asus performance claims over the past few months. PEG Link stands for “PCI Express Graphics Link” and is basically a way for the Asus BIOS to overclock the GPU core and memory speeds just as it does with the processor in the AI Overclock and AI N.O.S. options. That’s right, the Asus board overclocks your video card for you. This is the reason for the increased performance we saw from Asus’ P5AD2 motherboard recently.
This feature in and of itself isn’t enough to cause a stir, but the fact that they didn’t tell anyone what this feature was or what it was doing did cause one. Asus was very quiet about it, and of lot of reviewers, including myself, were left in the dark. Now that it’s in the open, the only thing left for Asus to do is allow users the ability to disable the feature if they wish. From the settings above you wouldn’t be able to tell that it is possible but Asus assures me that turning the setting to “Slow” is the same as turning it off. They really just need to offer a “Disable” option and make it work.
Finally, we have the hardware monitor page to test what your voltage and PSU rails are running at. If you look closely you’ll see the chipset fan is running at over 8000 RPM!!