Yes, with the right bios file: http://www.msi.com/product/mb/P67A-G45--B3-.html#/?div=CPUSupport.
At the post screen, check your bios file number at the top. Then select the ivy bridge cpu you desire and check the "cpu support" section for the bios file required. Newer files cover all previous bios versions plus whatever update is listed. "live update" is msi's windows bios flash program. Download it, install it, reboot, and get online. Then select the icon for the program and you can select individual files or all and it will check and update the ones you selected. Give it time to finish before touching any keys. It will tell when it's done and if you need to reboot your system.