Asus P6X58D Premium ReviewGeekspeak411 -
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On this page, I'm going to give you the low-down on all the nitty-gritty features Asus gives you to overclock with. All these features are found within the AI Tweaker tab of the BIOS. Is it up to spec? Let's find out!
When you first go to the tab, the current CPU clock speeds and DRAM frequencies are displayed. Directly below that are the clock speed adjustments. You can choose to either leave the AI Overclock Tuner on Auto, switch into one of the proprietary optimization states, or switch it into Manual for full control. Once you are in Manual, adjustments are present to change the CPU ratio all the way up to your CPU's 'Turbo' state; in the i7 920's case, 21. Next up is the SpeedStep toggle, which, when enabled, throttles your speeds based on your current usage to save power. For benchmark users and gamers, this feature will generally stay off. For everyone else though, the technology has matured and is easy to recommend in everyday use to save power. The Xtreme Phase Power toggle is next, allowing you to set the program controlling the power system to perma-full power, which is almost always enabled when overclocking. Below that are both the bclock and PCIE controls. The bclock can be cranked all the way to 500, which no current processors will even come close to, and the PCIE clock can be set up to 200. As with all other X58 boards, the DRAM clock is based on the bclock, so this list lets you choose which ratio you want to run your memory at. You can set the uncore clock after that and finally the QPI link speed. Separated from the group is the link to the DRAM timings page. Asus out does themselves here by offering so many timing adjustments beyond the standard x,x,x,xx,1N timings, that the entire list takes up two screens!
Back on the main AI Tweaker tab again, at the bottom this time, all the voltage adjustments are shown. Everything needed for system tweaking is availible. To begin, you set the CPU Voltage Control to Manual, then key in whatever voltages you would like to be served. Overall, there are eight primary adjustments available that you can see in the following pictures, on top of six additional DRAM voltage tuning options. Underneath the voltages, at the very bottom of the page, is where the sections for Load-Line Calibration, Differential Amplitude, and Clock Skewing options are found. Generally speaking, these are set once and then left alone until you get into some more extreme overclocking with the fun stuff.