PCI-E 2.0 Video card in PCI-E 1.0 Slot?

Will a PCI-E 2.0 Video Card run in a PCI-E 1.0 slot?

If so, what would be the drawback of such an arrangement?
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  1. Upon further review, I noticed the card says it supports "PCI Express® 2.0 / 1.1 Support".

    My mobo is just PCI Express 1.0, so does that mean I'm out of luck?
  2. Yes it will run fine. Only the highest end video cards even come close to needing PCI Express 2.0. It was developed to be futureproof.
  3. Everything should be backwards compatable but if you will post a link to your motherboard and the card we can be more sure.
  4. Graphics Card:

    Motherboard: MS-7046 Version 1 <-- which doesn't appear on Microstar's site, even under the archives. All I know, is that it's PCI-e 1.0.

    I'm limited by the Power Supply only being 350 Watts.
  5. Best answer
    It should work....all PCI Express is supposed to be backwards compatible. There were some early issues though if I remember right. If it does not work you can always RMA it.

    I am pretty sure you could go with an ATI HD 4650 or HD 4670 with that power supply. Either would be faster than the 9500GT and should be close in price. Also look for DDR3 if you can find it since it is faster. These lower end cards can not make use of 1gb of memory either...just not enough processing power. They put 1gb on them as a marketing gimmick so 512mb would be fine.

    Here is what I would get its even $10 cheaper

    Check out the hierarchy chart,2491-7.html
  6. It will work for Sure.
  7. An HD5870 (the current fastest single-GPU card) does not max out a PCIe 2.0 x8 slot. This slot is identical to a PCIe 1.0 x16 slot. They did a test by modifying a x16 PCIe 2.0 slot to run in x8 mode and the benchmarks were identical so it didn't need the extra bandwidth.

    It appears that the HD5870 is likely close to maxing out these slots but anyone with such cards would have a x16 slot.
  8. There were a few issues with some of the first PCIe 2.0 graphic cards working correctly with the original PCIe 1.0 slots. These slots were quickly revised to 1.0a version slots though, and the graphic cards that had problems were also quickly revised.
    In short, you would have to have one of the very first PCIe 1.0 motherboards ever made, and one of the very first PCIe 2.0 graphic cards ever made to even set up the circumstances that even maybe, might cause a problem.
  9. Thanks for all the information guys, appreciate it.

    I think I'm going to go with anort3's suggestion for a card.
  10. templetonpeck said:
    Thanks for all the information guys, appreciate it.

    I think I'm going to go with anort3's suggestion for a card.

    Glad to help. That 4670 should be a pretty good card. Good deal too especially being cheaper than the 5 generations older 9500GT.
  11. It didn`t work for me.
    HP MIS AMETHYST-M with 2006 3.47 BIOS (updated)

    Kicking up a dead thread I know; but I don`t like to leave other peole reading persistently false information.

    So I have a `HP` PCI-e 1.0 x16 Motherboard (Old Athlon x64 chip), and I have bought TWO HD7770`s over the months (PCI-e 3.0 x16) and NEITHER Work in the motherboard, no matter which drivers I try and use; after I read dozens of threads telling me thyat I could as all graphics cards are backwards compatible.

    You can only use up to a PCI-e 2.0 (NOT 2.1) x16 graphics card in a PCI-e x16 1.0 motherboard.

    So; anyone want two HD7770`s barely touched.
    The rig works perfect using an old X1950 XTX 512.
    But I wanted 1Gb.

    The best many people in a similar situation can hope for a up to a HD 4970 x2 or something.

    After; the 5000 series you need a slot 1.1 or 2.0 or 2.1 Mo-bo

    Kill the thread now?
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