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BIOS Setup

P5Q3 Deluxe mainboard was tested with BIOS version 0704 of June 19, 2008.

We thought that the new ASUS P5Q3 Deluxe mainboard will be very similar to its predecessors based on Intel P35, X38 and X48 chipsets. However, it turned out not quite like that in reality. ASUS engineers did their best to make the new mainboard more attractive than the previous ones, even though the P45 chipset is in fact not so innovative at all. As a result, the BIOS Setup of the new board can offer much more parameters to play with than the BIOS of P5K and P5E mainboard series.

The BIOS of ASUS P5Q3 Deluxe is based on AMI micro-code and has pretty common internal structure, typical of all ASUS boards. However, since it is equipped with Express Gate SSD, you may see Splashtop launching screen instead of the traditional boot-up logo when you turn on your system.

All overclocking friendly features of the BIOS Setup are gathered together in a separate page called Ai Tweaker.

Here you can manually adjust the processor clock frequency multiplier, FSB frequency within 200-800MHz interval, PCI Express bus frequency and FSB Strap. Alternative automatic FSB configuring implies the use of XMP profiles (if your DDR3 supports overclocker profiles in SPD). If it is enabled, the mainboard adjusts the system bus frequency on its own, judging by the most optimal memory work modes.

As for the memory frequency, the mainboard offers you a few options, depending on the FSB:Mem dividers provided by Intel P45 chipset. They are exactly the same as the dividers offered by the previous Intel chipsets, because P45 MCH uses the same memory controller as the previous generation core logic sets. We would like to remind you that far not all dividers ensure the best results during FSB frequency overclocking. Therefore, during overclocking you’d better use only those memory frequency settings that refer to FSB Strap 333MHz or 400MHz. However, these limitations are less serious for ASUS P5Q3 Deluxe mainboard, than for the boards on previous chipsets.

The BIOS of our board offers great functionality when it comes to memory timings adjustment. However, there is still one important option missing: Command Rate adjustment.

The mainboard reports the current timings right next to the adjusted parameters. It can help a lot during timings fine tuning.

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