PCI Express 4 vs PCIe 3: Is there a performance improvement?

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pcie 4 gpu in pcie 3 slot After a quick Google search, I found this article which explains that: a PCIe x16 slot can theoretically hit approximately 32 gigabytes  It should be backward compatible, but you will see less performance than if you had it in a PCIe slot since it runs at PCIe x8 instead  As with previous generations, the standard simply doubles the speed that the PCIe slot runs at It now provides about 2GBs per lane

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