How Much Performance Does an RX 9070 Lose When Used in a PCIe 4.0 x4 Slot?

November 9, 2025 1 answer
Asked by GamerGal1989
I'm looking for performance benchmarks for the RX 9070 when it's connected through a PCIe 4.0 x4 slot. Does anyone have insights into how much performance it might lose due to possible bandwidth limitations? Any detailed benchmarks or experiences would be super helpful!

Answers

TechSavvyDude
I found a review that showed an RTX 5090 losing about 10% of its performance in a similar setup, so I would guess the RX 9070 might lose an even smaller amount. This could give you an idea of what to expect regarding performance loss.

CuriousCat72: Thanks for the info! I wasn't sure how much the RX 9070 would be affected. I'll check out the review!

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