What are the results when using the 50 series graphics cards with a PCIe 4.0 motherboard?
What are the results when using the 50 series graphics cards with a PCIe 4.0 motherboard?
PC Specifications
Processor: AMD RYZEN 7 5800X3D
Cooler: DeepCool AK620 DIGITAL WH
Motherboard: GIGABYTE X570 AORUS MASTER
Memory: 2 x 16GB Corsair Vengeance RGB PRO SL @ 3200Mhz
Graphics: Gigabyte GeForce RTX 4080 Gaming OC 16G
Storage: SSD 1 – Samsung 990 PRO 2To – M.2. NVMe; SSD 2 – Samsung 990 PRO 1To – m.2. NVMe
Case: NZXT H7 FLOW RGB, equipped with 6 140mm fans NZXT RGB
Power Supply: Corsair RM1000x Shift, 1000W
not soon at all, because even the RTX 5090 struggles with PCIe 4.0 x16 connections and only takes minor hits at much slower speeds like x8 4.0 or 16x3.0. The performance drop is mostly seen in unrealistic situations. Nobody would choose the RTX 5090 for an outdated PCIe 2.0 slot or a reduced x4 PCIe 4.0 slot, even if it were only 10%.
But it's worth noting that the 4080 doesn't completely utilize the PCIe port.
when the PCI-E 4.0 slot reaches its limit, a 50 series card will be able to take advantage of it.
not soon at all, because even the RTX 5090 struggles with PCIe 4.0 x16 connections and only takes minor hits at much slower speeds like x8 4.0 or 16x3.0. The performance drop is mostly seen in unrealistic situations. Nobody would choose the RTX 5090 for an outdated PCIe 2.0 slot or a reduced x4 PCIe 4.0 slot, even if it were only 10%.
In brief, the PCI 5.0 for these cards is just extra stuff; it works without affecting performance.
I don't think there are many practical situations where a GPU owner would really need to worry about PCIE bandwidth with a high-end GPU. There might be some unusual cases (like the RX 6400 and 6500 XT, which had issues because they could only use four PCIE 4.0 lanes), but I doubt anyone is pairing an RTX 5090 with an old AMD Phenom II Black CPU for any real reason.
That's all the information you required.
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Appreciate the support. It really helped.
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