BIOS Features
The Asus P5B Deluxe motherboard came to us a while ago, but by the time the review was getting completed, we’d seen nearly a half dozen new BIOS files for it. The final revision we show here was changed just recently to allow CrossFire support — though no other overclocking features or settings were really changed with it.
Here we see that adjusting the CPU frequency up to 650 MHz is possible! Good luck on that one, but its nice to see all the options available to the user.
The DDR speed settings are shown here in terms of memory speeds — though really we are seeing memory ratios. For example, the DDR2-800 MHz setting will set memort at 800 MHz when the FSB is set at 266 MHz, but if you overclock the CPU frequency, then your memory speed will increase as well.
PCIe frequencies can be raised to 150 MHz.
Memory voltage adjustments are avaiable up to 2.45v and should be high enough for nearly all overclockers to get the most out of their memory.
The processor voltages are quite as flexible, going up to 1.7v.
The FSB termination voltage (which can effect overclocking performance) can be raised up to 1.45v…
… and the Intel 965 chipset voltage can be raised up to 1.65v…
… while the ICH8R south bridge voltage goes up to 1.8v.
A seperate portion of the south bridge that controls the media and USB features, can be controlled with a couple of voltage options.
