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CoderDevo t1_j8dkgha wrote

Reply to comment by YouJustSaidButFuck in Motherboard Shipments Plummet by Ten Million Units in 2022 by Avieshek

This is it. The 4090 can use those faster PCIe lanes.

Edit: I concede that this is not it. Looked at others' demos and none showed more that a 5% improvement with a 4090 on PCIE 3 vs. 4.

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Backlit_keys t1_j8edtrs wrote

The 4090 actually only supports PCIE Gen 4.0, so those getting fancy PCIE 5.0 motherboards will not gain any performance over the GPU. That, and I believe (really not sure on this) 4090 is not capable of saturating the 4.0 bandwidth. OP could’ve had his 5600X in a PCIE 3.0 build, though.

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