I just purchased on of those Gigabyte boards. It has an updated bios ( rev. 3.3 board and F8 bios ) and you can put a 6 core on it if you want. I wouldn't touch the other one. Even though MSI has come a long ways that board is a little too old and not of the quality that they are now. Overclocking a lot mat be a problem. There are no heat sinks on the mosfets for some reason. Good air flow would be a must.