« Reply #1 on: January 04, 2015, 07:17:15 pm »
They are all backward compatible so you can run a 2.0 or 3.0 you just wont get the full effect out of them. But they will run. The only thing you have to worry about is that newer cards sometimes need a bios update to make them run.
In that case email gigabyte support and see if they have a bios update for your board for the card you want to run. I would email them before buying the card.
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