Articles: Mainboards

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Next we see subsection dealing with voltage adjustment. The supported intervals and increments are the following:

  • CPU Voltage: 0.85V - 2.1V with 0.00625V increment, the nominal voltage will be unique for each particular processor sample;
  • CPU PLL Voltage: 1.5V - 2.78V with 0.02V increment, 1.5V nominal setting;
  • FSB Termination Voltage: 1.1V - 1.5V with 0.02V increment, 1.2V nominal setting (1.1V for 45nm processors);
  • Memory Voltage: 1.8V - 3.08V with 0.02V increment, 1.8V nominal setting;
  • NB Voltage: 1.1V - 2.16V with 0.02V increment, 1.1V nominal setting;
  • SB Voltage: 1.1V - 1.4V with 0.1V increment, 1.1V nominal setting;
  • PCIE SATA Voltage: 1.5V - 1.8V with 0.1V increment, 1.5V nominal setting.

Slightly increased voltages will be highlighted regular blue color, the warning is indicated by yellow, the next warning stage by purple and at last the extremely high voltage settings are highlighted red.

I have to say a few words about the processor core and chipset North Bridge voltages. The thing is that only if you have previously reset the corresponding mainboard jumpers, you will be able to set them to their maximum values. By default, the processor Vcore may be raised to 1.7V, and North Bridge voltage – to 1.9V.

I have my doubts about the need for these jumpers. I could probably imagine that someone may want to use Asus P5QL-E mainboard for CPU overclocking experiments involving extreme cooling and the available 1.7V will not be enough in this case. But can you think of a situation when extremely high 1.9V on the chipset North Bridge may not be sufficient?

Load-Line Calibration parameter will allow overclocking fans to avoid modifying processor voltage regulator system called VDroop mod. When the processor workload increases and so does the corresponding power consumption, processor voltage drops. However, voltage drop causes system instability and overclockers have to increase processor Vcore in advance, to limit their overclocking, or to perform a special modification that will keep the voltage at a certain preset rate. Asus P5QL-E owners will not need to do it, because they can lock this voltage by setting Load-Line Calibration to Enabled. Finally, fine tuning of the Ai Tweaker parameter called CPU GTL Reference may be very helpful during quad-core processor overclocking.

The next section called Advanced includes a number of sub-sections:

Here we should first of all check out the CPU Configuration section that reports the CPU specifications, allows adjusting the clock frequency multiplier, supported functions and technologies.

Other sub-sections provide access to configuration parameters for the chipset, integrated controllers, USB and Plug and Play.

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