--------------------------------------------------------------------------------Would someone tell me if there is a way to lock the 2D clocks on the ATI 3870 ?I have rivatuner and there is no selection to fix the 2D Clocks. The problem is I play FSX and FS9 and use the window mode due to using a second monitor and the clocks keep jumping from 2d which is only a core clock of 300 to 3d which is 777 by default. Fsx frames crawl when 2d kicks in which is crazy. I want to just fix the card to run 800 core and 2400 memory all the time.Would some smart Soul out there tell me how to do this please !!!!Frames are great when running the 800-1200 but when running 300-1126 Frames suck!

Interesting questionIm reading this posting: http://www.pcper.com/article.php?type=expert&aid=482hoping to find something about this.There are other forum sites better suited to such a deep question.On about the fourth page it talks about the "ATI Overdrive" page of the CatalystControlCenter (see attached pic while it lasts)and yes I see that 300 as current clock setting, mine has that too....allen

I use 'ATI Tray Tools' by Ray Adams, and it works great switching back and forth between 2D and 3D. Of course, I have a X1900XT (until my 8800GT arrives) and not sure if that makes any difference.