What is the difference between PCIe Gen 3 and PCIe Gen 4?

Can I Use a PCIe NVMe SSD in a PCIe Motherboard Slot? can you use pcie 4 0 gpu in 3 0 slot In general, as long as you are able to run your GPU at PCI-e x8 or above , you can expect can i buy a slot machine This would be like similar data rate to if a x32 PCIE slot existed, which we can safely say is overkill for gaming scenarios YMMV (eg

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