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Solved Overclocking On Asus M4A79XTD EVO

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This BIOS is just about the most confusing monster that I have ever had the displeasure of navigating. does everything mean? And what does it do? And how does it effect overclocking? What should stay on auto or locked to a certain voltage, etc? I am currently not overclocking at all because I’m so perplexed by the plethora of confusing technical acronyms. And I’m tech savvy, this is unnecessary lol.

The main part of the BIOS that is confusing is the JumperFree Configuration.

They have like twenty different voltages and I’m afraid to touch anything lol.

So far I have:

CPU base clock set to 200 default

VCore set to 1.4v per specs

VDDNB set to auto, I now know that it is for the On-die Memory Controller/Bridge voltage, but do I set it to? I don’t want to mess something up.

NB Freq set to 2000mhz
NB set to 1.1v, per specs for all 7xx chipsets if I’m not mistaken

HT set to 2000MHz
HT Voltage set to Auto, not sure what it should be but changing this and the VDDNB to the “standard” option (I forget the recommended voltages) led to a 4 degree temperature spike in my idle temps, so I set them both back to auto.
HT width set to 16 bit

DRAM set to 1333mhz @ 7-7-7-21, 1.5v

Some weird setting with 1.2v in the title, and another with 1.8v, I set them to what their names are, figured that was obvious.

C1E disabled
PCIE Spread Spectrum Disabled
Cool N Quiet Enabled
ACC disabled

There are more settings I’m sure I’m missing but that isn’t bad from memory after setting the settings last week and not looking at them since..

Anyways, does anyone have this board and processor and is overclocking on it? If so, suggestions are more than welcome, they’re a must. 🙂


1 Answer

  1. You have a Black Edition CPU so all you need to do is increase the multiplier & possibly the CPU voltage to stabilize the overclock. That’s the whole idea behind the BE CPUs. There’s really no need to mess with any of the other settings.

    AMD systems have no FSB. The CPU & memory controller communicate at full processor speed, so the higher you clock the CPU, the faster the CPU-memory communication. Increasing the RAM speed will have very little effect on performance. In the Tom’s article I linked to in your other thread, it mentions that an overclocked CPU with DDR3-800 will perform better than a non-overclocked CPU with DDR3-1333. The key is to run the CPU as fast as possible, while keeping the HT & memory buses at their defaults speeds. Even so, the X4 965 BE is already near the upper limit of what the X4 is capable of. You’ll be lucky if you can hit 3.8GHz & remain stable. Hopefully you have a decent PSU because your CPU is rated at 140W. Overclocking will increase the wattage.

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