Pci express 3.0 x 16 on pci express x16

I wonder can we putt a pci e 3.0 on a pci 1.0 x16 cause my computer is old i only need a new video card for my needs ?? thanks
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More about pci express pci express x16
  1. Yes. PCIe is backwards compatible.

  2. This is **sorta-kinda** general performance

    Gen3 has 2X the bandwidth of Gen2
    Gen2 has 2X the bandwidth of Gen1

    PCIe Gen1 x16 (lanes) is roughly similar in bandwidtyh to PCIe Gen3 x4 (lanes)
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