Can UE4 use different Graphic cards?

Development Rendering
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1

Hi, i got a RTX 2070s and a GTX 1060 6GB, will it provide me some extra power if i use both?

2

I also have an SLI setup and can confirm that UE4 indeed uses both my cards. Although my cards are the same type so your mileage may vary given you’ve different ones. Oh, and make sure you’ve enabled “Maximize 3D Performance” in the nVidia control panel.