Navi cards in older motherboard?

i am currently running an asus prime x399-a motherboard with 2 RX 590 STRIX graphic cards.
i am wanting to upgrade both of my graphic cards to the RX 5700.
the RX 5700 states that is uses PCIe 4.0, but my motherboard only supports PCIe 3.0.

will the 5700 still function well in my motherboard? i dont care if i would be bottlenecking the cards, as long as they still outperform my current RX 590.

Yep, it’ll work fine. We have a video in the megathread of testing a b450 board with new ryzen and Navi gpus

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