I just wanted to share a tip with you PowerPC enthusiasts. Apple and other OS manufacturers use a technology called V-Sync which essentially vertically refreshes the screen. It is mainly designed for CRT displays rather than LCDs, so we can safely disable it. Anyone who has used Tiger knows how smooth the dock can be on opening applications, minimizing windows, and magnification. Unfortunately, many late PowerPC Macs like my PowerMac G5 and early Intel Macs are slowed by BeamSync (Apple's term for V-Sync). I am not sure of the root cause of the slowness, but it is rather disappointing to see choppy opening animations. To try this out, you are going to want either TextWrangler or Property List Editor which is included in the Xcode tools, a free download. Please note that I do not know if this will work on Tiger or earlier versions. Begin by navigating to /Macintosh HD/Library/Preferences and open the file "com.apple.windowserver.plist". If using Property List Editor, go to the Compositor section and set "Deferred Updates" to 0. You may need to change the file to read and write under "Get Info" before saving. Once complete save the file and reboot. If using TextWrangler, simply set the "Deferred Updates" to zero as well. It is normally located at the top of the file. Save and reboot and give it a shot! I tried this strictly on 10.5.8 and it worked well. I am not sure if it is going to work even on earlier versions of Leopard. Note that opening QuartzDebug does reset the file and you will need to repeat my steps. Try to avoid opening QuartzDebug. Do not do this with a CRT or you will experience mouse tearing and other UI lag. My specs for reference are: PowerMac G5 Dual 1.8 GHz PowerPC G5 2 GB RAM ATI Radeon 9600 XT (128 MB) with HP S2031 and Apple Studio Display (17") 2 TB Hard Drive Leopard 10.5.8 ---------- You maybe able to boost your graphics performance a little bit more by enabling OpenGL. In my tests, graphical applications performed smoother and faster. To do this simply open a new Terminal session and enter this command. Code: sudo defaults write /Library/Preferences/com.apple.windowserver \QuartzGLEnabled -boolean YES A way to speed up the Finder is to speed up the Finder's UI performance is to use OnyX to speed up the display of sheets. To do so, simply download and install the last version of OnyX for Leopard (2.0.6). Open OnyX and go to the "Parameters" section and set the "Speed of Display of Sheets" to "Very Fast". NOTE: THIS TIP'S CREDIT GOES TO eyoungren FOR TELLING ME ABOUT THIS IN ANOTHER THREAD... Continue replying with any tweaks you do to speed up graphics performance on Leopard.