Ok listen. Disregard everything that anyone has said in this thread.
It's not necessarily the mobo you have to worry about, it's the chipset on the mobo that you need to look into. Certain chipsets on older AMD boards won't support SLI and only Crossfire so that's a thing. Generally though, as long as there's a PCI x16 slot you'll be fine.
It'd be easier to say what motherboard are you getting instead of telling every single mobo compatibility. Sidenote. If SLI is important to you get a 990x chipset or higher like 990FX.