Pci 3.0

what is advantage the of pcie 3.0 over 2.0 and wheather pci 3.0 is backward compatible with 2.0
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  1. You can mix&match PCIe 1.1 to PCIe3.0. You're only as fast as your weakest link.
  2. The only advantage that I know of is that bandwidth is doubled. Then again, I'm not in the market for a new video card so I haven't really bothered researching the improvements.

    A PCI-e 3.0 card will be backwards compatible with PCI-e 2.0 slot. The PCI-e 2.0 slot still has enough bandwidth to any Radeon HD 7xxx series and Geforce GTX 6xx series card and most likely their immediate successors.

    Similarly, a PCI-e 2.0 card will work in a PCI-e 3.0 slot.
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