Manual
Page 27
... and hold the key during system start-up until you hear three beeps. CrossFireXTM: CrossFireX delivers exceptional performance on a single display by combining the processing power of two or more Graphics Processing Units (GPUs). Configure When an AMD CrossFireX configuration is not enabled, select the Enable CrossFireXTM check box. ... clock. Note: If your computer has full booted, disable Preserve AMD Overdrive settings at logon. Use the Automated clock configuration utility to maximize your specific requirements.
... and hold the key during system start-up until you hear three beeps. CrossFireXTM: CrossFireX delivers exceptional performance on a single display by combining the processing power of two or more Graphics Processing Units (GPUs). Configure When an AMD CrossFireX configuration is not enabled, select the Enable CrossFireXTM check box. ... clock. Note: If your computer has full booted, disable Preserve AMD Overdrive settings at logon. Use the Automated clock configuration utility to maximize your specific requirements.