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Blender 2 GPUs without SLI motherboard

I have a question regarding using 2 GPUs for improving rendering times in Blender. For gaming purposes, I've read that you need a motherboard that is SLI compatible to use 2 GPUs. However, when I read about using 2 GPUs for Blender, it seems that SLI isn't used and actually makes it slower. 

 

So I guess my question is, can I use any motherboard that can plug in two GPUs or would I need a specific one (with SLI)?

 

I am very new to the world of PCs so a detailed answer would be helpful or any extra information you think would be good to know :)

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SLI is only used for games, rendering doesnt use nor care about it.

 

What does matter is PCIe bandwidth to all GPUs, but from what I've heard Blender doesnt benefit much from high PCIe bandwidth either.

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As far as I'm aware, just plug all gpus you want in the slots and you'e good to go. A friend of mine did this a while back with a 780, 770 and 560

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Oh okay. That's what I was hoping for so perfect! 

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