PCIe2.1x16 card on PCIex16 slot HELP NEEDED !!!!!!

Has anyone ever managed to fix a PCIe 2.1 video card in a PCIe1. x16 slot ?
If yes , was there any good amount of performance degradation for a $200 graphics card ?
I m desperate to find a solution and the fact that i m from India makes it even worse since the graphic card vendors over here dont know s*** about computers :pfff:
Please guys , throw me some light on this issue :??:
Anyways , thanks in advance .
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More about pcie2 1x16 card pciex16 slot needed
  1. There should be no noticable performance decrease, but not all 2.1 cards work in 1.0 PCIe slots. Try to find a 2.0 card instead.
  2. hang-the-9 said:
    There should be no noticable performance decrease, but not all 2.1 cards work in 1.0 PCIe slots. Try to find a 2.0 card instead.

    I searched for PCIe2.0 cards in AMD s website and it looks like they got rid of all the PCIe2.0 version cards and they roll out their new cards as PCIe2.1 version cards . I planned to get the HD 6850 and my mobo is a DG35EC . Can you help me ????
  3. Yes it will !! But i guess you may have to upgrade your Psu .
  4. gauravtushir said:
    Yes it will !! But i guess you may have to upgrade your Psu .

    Yeah i m going to get a new PSU ... but wat do you think abt the PCIe compatibility ?
  5. The slot revision compatability is a bit touchy, there is not a set issue with 2.1 on a 1.0 slot, it depends on the card / motherboard.
  6. Very hard to find a definative answer. Also some dif between ver 1.0 and ver 1.1. Also verify your Bios Version, MB manuf. may have a Bios update so that it will work. Look at latest bios update and what was "fix" by it.

    Ref: cheesesubs comments
    sadly it won't support pcie 1.0 or pcie 1.0a. a pcie 2.1 card would require newer chipset after g31/q965 and require pcie 1.1(at least) to run pcie 2.1 card. even so it is still having issue with some after market card and some certain amd model like 5670/5570. so called the backward compatibility is only applies to reference model in most case(nvidia) or limited to some model(amd). keep in mind these chipset under the list do not suppose pcie 2.1 despite pcie has backward compatibility. these chipset will not support pcie 2.1

    nforce 4
    nforce 5
    p4m900/800
    661fx
    p865
    915 all series
    925x
    945 all series(some card may work but not all)
    ati rd580/rd600/rs600 or previous series
    nforce 610i/610a/630/650
    amd 690x and previous series

    And from Jaquarkx
    There is a difference with PCI-e 2.0 and PCI-e 2.1 cards. A PCI-e 2.0 card is backwards compatible with a PCI-e 1.0 slot. That is not the case with all PCI-e 2.1 cards. It basically boils down to if the PCI-e 1.x slot in the motherboard is properly configured or supported by the chipset.

    Some motherboard manufacturers have released BIOS updates for older motherboards with PCI-e 1.x slot to be compatible with PCI-e 2.1 cards, but you have to check specifically for your motherboard.
  7. Your motherboard (DG35EC) should work with a current GPU (HD6850). The larger factor will be having a suitable PSU to meet the GPU's power requirements.
  8. It should be backwards compatible. And the performance hit should be minimal.
  9. Thanks guys for your replies . Has any your friends managed to run a HD6xxx card on the DG35EC mobo ? Was it cool ?

    @ RetiredChief
    As far as the BIOS updates go i could not manage to find a new update .
  10. the only problem you may encounter is that the card will fail to run at all, some pcie1.x motherboards dont work with new cards.
  11. iam2thecrowe said:
    the only problem you may encounter is that the card will fail to run at all, some pcie1.x motherboards dont work with new cards.


    Can you suggest me some motherboards that have LGA775 socket ( 45 nm processor core2quad Q8200 2.33 Ghz)
    and PCIe2.x16 graphics connector ?
  12. PLS HELP ASAP !!!
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