Manual
Page 28
... recommended speeds for the graphics processor clock and video memory clock. Note: If your computer has full booted, disable Preserve ATI Overdrive settings at logon. GV-R6900 Series Graphics Accelerator - 28 - CrossFireXTM: CrossFireX delivers exceptional performance on a single display by combining the processing power of two or more Graphics Processing Units... Catalyst display driver, ATI CrossFireX support is detected for ATI CrossFireX configuration. If ATI CrossFireX is only for the first time by dynamically and safely overclocking the graphics processor and memory.
... recommended speeds for the graphics processor clock and video memory clock. Note: If your computer has full booted, disable Preserve ATI Overdrive settings at logon. GV-R6900 Series Graphics Accelerator - 28 - CrossFireXTM: CrossFireX delivers exceptional performance on a single display by combining the processing power of two or more Graphics Processing Units... Catalyst display driver, ATI CrossFireX support is detected for ATI CrossFireX configuration. If ATI CrossFireX is only for the first time by dynamically and safely overclocking the graphics processor and memory.