Probably not. There will be someone who usually posts a very long and complicated process that will give you slight chance of saving the data by just moving the array, (at least that is what I have seen in the past when someone asks this question)
But moving arrays from 1 controller to another is iffy at best even on identical motherboards and controllers, and near impossible to move between different motherboards with different controllers.
Buy or borrow a large external drive and back it all up before you try to do it, even when the RAID experts start posting with all the possible ways to make it work.
Fact of the matter is, it seldom turns out the way you hope in these cases, be prepared to completely rebuild the array on the new controller from scratch, with no data intact.
The best advice I can give is when you move it to the Gigabyte board, buy a controller card. That way if you ever move it again, you move the controller with it, and you have a very good chance of saving everything intact without much trouble.