Using PCIe 4x instead of 16x

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Using PCIe 4x instead of 16x
Fri Jun 28, 2013 7:48 pm
  • Long story short, I busted my PCIe 16x slot. Will using the 4x slot cause any problems/decrease in performance?

    I currently am using a Radeon HD 7950
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    fenderbender123
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Re: Using PCIe 4x instead of 16x
Mon Jul 01, 2013 7:05 pm
  • erm.. you cant use a video card in anything but x16.
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    KitsapHawk
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Re: Using PCIe 4x instead of 16x
Mon Jul 01, 2013 10:08 pm
  • KitsapHawk wrote:erm.. you cant use a video card in anything but x16.

    Not true. If you can fit a PCI-Express card into a PCI-Express slot, it'll work. You can even put an x1 sound card into an x16 slot.

    However, fender, you're going to likely have poor performance. The bandwidth on an x4 lane is a fraction of an x16 lane; even x8 is way more capable than an x4 lane. Many motherboards, if the primary x16 slot isn't in use, will reassign that power to a slot that IS in use. In other words, your motherboard might very well give x8 or x16 power to your x4 slot if your x16 one's empty. Refer to your motherboard manual to see for sure.
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