PCIe 5 GPUs in PCIe 4 Slots

[Delta3D]

Given that the 50XX series are rumoured to land with PCIe 5 support, do we expect there will actually be much benefit to swapping to a PCIe 5 board?

As far as I'm aware, current GPU's aren't really maxing PCIe 4 slots? With that, my presumption is that the 50XX series will likely (although obviously unconfirmable) suffer no issues in a PCIe 4.0 slot.

 

[Delta3D]

If it's anything like a 4090 in a pci-e 3.0 slot, then it's likely a 2% loss at most

NVIDIA GeForce RTX 4090 PCI-Express Scaling

The new NVIDIA GeForce RTX 4090 is a graphics card powerhouse, but what happens when you run it on a PCI-Express 4.0 x8 bus? In our mini-review we've also tested various PCI-Express 3.0, 2.0 and 1.1 configs to get a feel for how FPS scales with bandwidth.

www.techpowerup.com

Interesting, didn't realise it'd be that little for PCIe 3.0!

 

[Delta3D]

As a Asus motherboard manufacturer employee on commission yes you have to upgrade, buy the most Asus expensive model and several spare just in case they're selling fast only a few left.

Discount code?

Yes, because many GPUs are going to be x8 cards.

All the leaks/rumours are pointing to 50 series being x16 cards. Curious to see if AMD follow suit!

 

[Delta3D]

On my old setup my 7900XT would only connect at PCIe 4.0 x4. I can't tell ANY difference with PCIe 4.0 x16 now I've changed motherboard, either with my eyes or with synthetic benchmarks.

Interesting, I would have thought that would have noticeable impact on GPU bandwidth! Although I think that gives around 8GBPS bandwidth for Gen 4.0 x4.