PCI express question

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  • rowan
    Too lazy to set a custom title
    • Mar 2002
    • 17393
    #1

    PCI express question

    Can you use a 1X card (with the small number of connectors) in a 4X or 16X slot?
    Tags: None
    • Yngwie
      I am an Alien from space
      • May 2003
      • 11118
      #2
      I'm not 100% sure, but I don't think you can. Might still work, but why would you waste a 16x slot for a 1x card? doesn't your motherboard have 1 or 2 1x slots?
      ICQ: 16544251 - Skype: gator37 @ eastlink.ca - email: yngwie @ isys.ca

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        • rowan
          Too lazy to set a custom title
          • Mar 2002
          • 17393
          #3
          Originally posted by Yngwie
          I'm not 100% sure, but I don't think you can. Might still work, but why would you waste a 16x slot for a 1x card? doesn't your motherboard have 1 or 2 1x slots?
          It does, but not enough of them

          one 16X
          one 4X
          one 1X
          three legacy PCI

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            • Yngwie
              I am an Alien from space
              • May 2003
              • 11118
              #4
              Originally posted by rowan
              It does, but not enough of them

              one 16X
              one 4X
              one 1X
              three legacy PCI
              ah ok.. my motherboard has 3 pice 1x and 1 pcie 16x

              of course there are the 3 PCI slots, but I'm not counting those. I still don't think that a 1x card would work properly in a 16x slot.
              ICQ: 16544251 - Skype: gator37 @ eastlink.ca - email: yngwie @ isys.ca

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                • Yngwie
                  I am an Alien from space
                  • May 2003
                  • 11118
                  #5
                  I would have to assume that you only have the 4x one free since the 16x one is used up by a video card. I don't know much about 4x ones though.
                  ICQ: 16544251 - Skype: gator37 @ eastlink.ca - email: yngwie @ isys.ca

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                    • rowan
                      Too lazy to set a custom title
                      • Mar 2002
                      • 17393
                      #6
                      Hmm looks like I may be able to after all...

                      Yes you can, PCIe is compatable as long as the co-efficent of the x is lower on the card then the co-efficent of x on the slot you wish to use. Thus a 1x card would fit in a 1x, 4x, 8x, or 16x slot.

                      A 1x slot will fit only 1x cards
                      A 4x slot will fit only 1x, and 4x cards
                      A 8x Slot will fit only 1x, 4x, and 8x cards
                      A 16x slot will fit only 1x, 4x, 8x, and 16x cards

                      The 16X slot will be used for a video card, the 4X slot will (hopefully) be used for a 1X ethernet card.

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                        • Yngwie
                          I am an Alien from space
                          • May 2003
                          • 11118
                          #7
                          ah cool.. I didn't know that so it's nice to learn news things.
                          ICQ: 16544251 - Skype: gator37 @ eastlink.ca - email: yngwie @ isys.ca

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                            • rowan
                              Too lazy to set a custom title
                              • Mar 2002
                              • 17393
                              #8
                              Originally posted by Yngwie
                              ah cool.. I didn't know that so it's nice to learn news things.
                              From my limited understanding of PCI/x it looks like it's just a bunch of repeated connections, so 16X has 16 of the 1X channel connections, and the card negotiates how many channels it needs/supports.

                              I found a site where someone taped up the connectors to turn their 16X GFX card into a 1X card and it still worked.

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