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PCI-E x16 slot compatibility?

Hello. I purchased this socket 478 mobo to upgrade my dead system: http://www.newegg.com/Product/Product.aspx?Item=N82E16813138174&Tpk=Biostar%20478

I can't seem to get the mobo to detect my ATI 5770. I talked to Biostar support and they said that because my card is pcie 2.0 it isn't compatible with the x16 slot I have. I know that I've heard otherwise on toms and elsewhere. I need to know if I can get my card working in this mobo.

Thanks,

Chris
9 answers Last reply Best Answer
More about slot compatibility
  1. 2.0 is backwards compatible with 1.0

    is you power supply up to spec? its not unheard of for older boards having issues with new cards though.
  2. My psu is 700w. The card works fine in my other system. Is there a way I can update the mobo to fix the issue? I have the latest bios and drivers.
  3. sounds like its up to date already then
  4. So the mobo is just too old then? :(
  5. Best answer
    The card is PCIe 2.1, not 2.0. Unless Biostar has an update to provide PCIe 2.1 compatibility, it will not work on that motherboard.

    Consult these two other threads wherein the same situation was experienced and the same conclusion was drawn.

    http://www.tomshardware.com/forum/285668-33-problem-radeon-5670

    http://www.tomshardware.com/forum/285613-33-radeon-5770-displaying

    The simple fact is that PCIe 1.0 and 1.0a need a proper update from the motherboard manufacturer to provide compatibility support for PCIe 2.1 cards. If they don't have such an update, then that's that. Per my discussion with a representative from XFX:

    "That is just the way that it is. The motherboard manufacturer didn't implement the proper support before discontinuing support for the product. Some of them did and some did not. It happens when new standards come out."

    My advice: Get a 4000-series card or something from the nVidia camp.
  6. Ok, that sucks. Thanks Raz.
  7. Best answer selected by Cgintz.
  8. It does suck, and I'm sorry I was the bearer of bad news.

    I went back and forth with XFX for 3 days trying to get to the root of the issue on behalf of the OP's of the two threads I linked, only to end up with a truly disappointing outcome.
  9. Luckily I didn't buy the 5770 for this build. It is gonna go towards my next higher end build. I wonder if anyone knows a decent PCIE x16 1.0 card I could pick up cheap.

    Thanks Raz :)
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