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PCI-e 3.0 4x Slot

I have a R9 280x plugged into the PCI-E 3.0 4x slot on the motherboard. There are no other PCI-E/PCI slots used. Am I losing any performance from the card?

Edit: I am using a Gigabyte GA-Z97X-UD3H motherboard
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  1. What make/model of motherboard are you using?
  2. COLGeek said:
    What make/model of motherboard are you using?


    I updated the original post. Gigabyte GA-Z97X-UD3H
  3. Are you sure it is PCI-E 3.0? I have only seen PCI-E 2.0 @4x. I did not even think that would work gaming. I have used a P8Z77 V LX and the Borad does support crossfire but the Second full length slot is PCI-E 2.0@4x. I know that PCI-16x 3.0 is backwards compatible and So a Newer pci-e 16x 3.0 Card would work in an older pci-e16x 2.0 slot or even pci-e16x1.1 and the performance loss is not great. The 3.0 has double the date bandwidth of 2.0 and this does not effect the performance that much. The Different PCI-E slots have different bandwidth for different devices. Like a sound card or raid card would require a certain amount of data bandwidth
  4. mickypheonix said:


    I do not have multiple video cards. I am wondering about performance with one video card.
  5. Vitric9 said:
    Are you sure it is PCI-E 3.0? I have only seen PCI-E 2.0 @4x. I did not even think that would work gaming. I have used a P8Z77 V LX and the Borad does support crossfire but the Second full length slot is PCI-E 2.0@4x. I know that PCI-16x 3.0 is backwards compatible and So a Newer pci-e 16x 3.0 Card would work in an older pci-e16x 2.0 slot or even pci-e16x1.1 and the performance loss is not great. The 3.0 has double the date bandwidth of 2.0 and this does not effect the performance that much. The Different PCI-E slots have different bandwidth for different devices. Like a sound card or raid card would require a certain amount of data bandwidth


    I'm not sure that it is. The board says PCI-E 3.0 on it though. I have been using the graphics card in this configuration for 6 months now.

    Let me change my question then. Is there a difference between having the card in the 8x slot or in the 16x slot?
  6. If you see here, you will see that you have 3 PCI x16 length slots:

    http://www.gigabyte.com/products/product-page.aspx?pid=4960#sp

    For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot.
  7. COLGeek said:
    If you see here, you will see that you have 3 PCI x16 length slots:

    http://www.gigabyte.com/products/product-page.aspx?pid=4960#sp

    For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot.


    Okay. It says it is a PCI-E 16x running at 4x. Does that make a difference?
  8. you will not notice the difference between x16 and x8 realistically , but why with only a single card are you not using the first X16 pcie slot on your board ?
  9. Best answer
    Using the x4 slot will impede performance. Contrary to what was stated earlier, there have been tests/studies that conclude that using a PCIe slot with less bandwidth will indeed lower your video performance. While not necessarily huge, there will be an impact.

    See here for conformation: http://www.maximumpc.com/pc_performance_tested_2014?page=0,2

    Also, as asked earlier, why are you using a less capable PCIe slot when you have an available higher bandwidth slot?
  10. COLGeek said:
    Using the x4 slot will impede performance. Contrary to what was stated earlier, there have been tests/studies that conclude that using a PCIe slot with less bandwidth will indeed lower your video performance. While not necessarily huge, there will be an impact.

    See here for conformation: http://www.maximumpc.com/pc_performance_tested_2014?page=0,2

    Also, as asked earlier, why are you using a less capable PCIe slot when you have an available higher bandwidth slot?


    Didn't realize that was how the board was setup until today.
  11. I am sure it is fine if the Graphics card is in the PCI-E 3.0 or 2.0 at 16x or 8x. z77,z87,z97 are mainstream platforms and you can have multiple graphics card configurations as long as you use the right slots and Have bandwidth utilized across the MOB as the Manual or manufacturers website intends for that particular Chipset. The Z97 chipset would usually share the First PCI-E 16x slot with 2 or 3 ports on the MB anyway. But regardless the the pci-e 16x or 8x would give the same graphical fidelity and performance within margin of error. But with regards to the PCI-E 4x generally that is not for a graphics card. I hope that i made sense as I am quiet tired
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