theconnactic reacted to a post in a topic: Working ATI cards with AMD and Mountain Lion/Lion 64-bit
clarusmoof replied to theconnactic's topic in OS X 10.8 (Mountain Lion)Card: XFX Radeon HD 6450 2GB Computer: Mac Pro 3GHz 2xDual Core Xeon (Mac Pro 1,1) Device ID: ???? Ports: DVI - HDMI - VGA System: 10.7.5 Method to get it working: Just plugged it in to PCIe bay 1. At first Mac Pro was sluggish, like it was freezing, and thought there were to displays connected. Removed original nVidia card, rebooted and everything is working properly. System profiler recogonizes video card properly and shows full 2GB of memory. No EFI boot. Will be upgrading OSX and will update this post to include missing data and test results.