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Gigabyte's latest BIOS update enables PCIe 4.0 support on its AMD X470 and B450 motherboards - NotebookCheck.net News
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Does B450m mobo support PCIE 4.0? I have 2 gigabyte mobo's with the b450m chipset and one supports PCIE4.0 and another 3.0... : r/gigabyte
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