Updated to Mountain Lion 10.8.3 without any significant problems. Check bottom of the post for detailed info!
Gigabyte GA P41T-D3P is very cheap motherboard and it’s perfect solution if you wanna use your older socket 775 CPU with a newer DDR3 memory to build a low budget hackintosh. Actually its cheaper to buy new motherboard + 2x4GB DDR3 memory modules than just 2x4GB DDR2 memory modules which are very expensive this days. This tutorial will show you how to setup your BIOS, and install OS X 10.8.2 Mountain Lion on this specific motherboard, but it should work for most intel based Gigabyte main boards and core2duo or later processors. You just need to find exact hardware you use, and than select specific drivers and (if u use) DSDT.aml for your main board.