About This File
Kexts updated so it now supports OS X 10.8.3
Use the latest version of Chameleon just in case.
Tested on a XFX Radeon HD 677X-ZNLC 850M 1GB GDDR5 connected via VGA port it should work fine on DVI, I haven't tested on HDMI.
It should work on Gigabyte, MSI and Asus models as well, let me know if it doesn't, also provide device IDs so I can add them for future updates.