Though the M4A89GTD Pro/USB3 has Asus’ excellent TurboV, a hybrid hardware/software feature for overclocking in the Windows environment, I get my overclocking jollies in the BIOS, doing it the ol’ fashioned way. As most Asus motherboards, the board has “Level Up” overclocking, you choose a higher processor in the CPU’s product line and all settings are done automatically. I use it as a starting point, and do my tweaks from there.
The highest choice was 3.4gHz, and that overclock was easily accomplished. The last time I overclocked this processor I attained a clock of 3.8gHz, so I decided to go straight there, adding some CPU voltage in the process, but that clock speed was a little high.
After a significant amount of experimentation, I ended up with a stable clock of 3.63gHz…not quite the highest overclock with this processor, but a little higher than the 3.6gHz I normally got previous to the 3.8gHz one.