NVIDIA GPU Ex is an NVIDIA chipset-specific BIOS feature. The name is purportedly a truncation of "NVIDIA GPU Extra", hinting that it improves the performance of NVIDIA graphics cards. Find out what you should set it to, and why!
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips