The information in this article applies to the following configuration(s):

• Catalyst Control Center
• Radeonâ„¢ X800 series
• Windows Vista 32-bit Edition
• Windows Vista 64-bit Edition
• Windows XP Professional
• Windows XP Home Edition
• Windows XP Media Center Edition
• Windows XP Professional x64 Edition

Symptoms:
The 60Hz option is listed twice in the Display Option under 3D Refresh Rate Override

The information in this article applies to the following configuration(s):

• Quake 4
• Catalyst Display Driver 7.1 and higher
• Radeonâ„¢ X1950 series
• Radeonâ„¢ X1900 series
• Radeonâ„¢ X1800 series
• Radeonâ„¢ X1650 series
• Radeonâ„¢ X1600 series
• Radeonâ„¢ X1550 series
• Radeonâ„¢ X1300 series
• Radeonâ„¢ X1050 series
• Radeonâ„¢ X850 series
• Radeonâ„¢ X800 series
• Radeonâ„¢ X700 series
• Radeonâ„¢ X600 series
• Radeonâ„¢ X550 series
• Radeonâ„¢ X300 series
• Radeonâ„¢ 9800 series
• Radeonâ„¢ 9700 series
• Radeonâ„¢ 9650 series
• Radeonâ„¢ 9600 series
• Radeonâ„¢ 9550 series
• Radeonâ„¢ 9500 series
• Windows Vista 32-bit Edition
• Windows Vista 64-bit Edition

Symptoms:
Quake4 is always running at 60fps eventhough Vertical Sync is enabled and refresh rate is set to 75Hz in Catalyst Control Center.