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EVGA GTX 640 + GTX 660 Ti

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veganfanatic
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2016/02/02 00:14:50 (permalink)
On my M5A99FX board I tried to use the GTX 660 Ti in the first slot and I installed the GT 640 in the second slot, machine would not boot.
 
I wonder what is wrong as I was wanting to test the cards with DX12 and the only game I have called Ashes of the Singularity in DX12 mode
 
both cards are UEFI upgraded
 
This appears to be a BIOS problem
 

  


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    veganfanatic
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    Re: EVGA GTX 640 + GTX 660 Ti 2016/02/02 09:36:30 (permalink)
    yes both work individually, tested with many systems

      


    Corsair Obsidian 750D Airflow Edition + Corsair AX1600i PSU
    My desktop uses the ThinkVision 31.5 inch P32p-20 Monitor.
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    veganfanatic
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    Re: EVGA GTX 640 + GTX 660 Ti 2016/02/08 08:24:22 (permalink)
    outside of a PCI Espress Wi-Fi card, no other devices on the slots
     
    Corsair TX850V2 has plenty of power
     

      


    Corsair Obsidian 750D Airflow Edition + Corsair AX1600i PSU
    My desktop uses the ThinkVision 31.5 inch P32p-20 Monitor.
    My sound system is the Edifier B1700BT
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    bob16314
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    Re: EVGA GTX 640 + GTX 660 Ti 2016/02/09 00:39:45 (permalink)
    veganfanatic
    I installed the GT 640 in the second slot, machine would not boot.



    The PCIEX16_2 slot is an x4 mode slot not meant for NVIDIA graphics card configurations..Use the PCIEX16_3 slot.
    post edited by bob16314 - 2016/02/09 00:46:57

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    veganfanatic
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    Re: EVGA GTX 640 + GTX 660 Ti 2016/02/09 04:41:02 (permalink)
    Both cards are installed in the x16 slots, I am aware that NVIDIA cards, unlike AMD, want at least x8 lanes
     
    AMD cards will work in x4 slots, which has some interest for DX12 and swarms of video cards
     

      


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    My desktop uses the ThinkVision 31.5 inch P32p-20 Monitor.
    My sound system is the Edifier B1700BT
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    NO_sauce
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    Re: EVGA GTX 640 + GTX 660 Ti 2016/02/09 07:45:26 (permalink)
    Just curious, I know you have tested the cards individually. Have you tested both slots individually? I've seen some bad slots in my day

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    bob16314
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    Re: EVGA GTX 640 + GTX 660 Ti 2016/02/09 10:16:10 (permalink)
    So if you have them in the 1st and 3rd PCIe_X16 slots and not the 1st and 2nd slots as stated in your first post, I would update the BIOS if you haven't yet and go from there..If no joy, try the cards in the PCIe_X16 3rd slot like NO_sace said..Not sure if that board will boot up with a graphics card only in the 3rd slot though, some will, some won't.

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    veganfanatic
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    Re: EVGA GTX 640 + GTX 660 Ti 2016/02/09 12:23:53 (permalink)
    All slots have been tested and work
     
    To prove an illegal white list
    I remove an NVIDIA card from slot 1, and replace it with a Radeon card, it POSTs fine
     
    this is why i am so cynical 

      


    Corsair Obsidian 750D Airflow Edition + Corsair AX1600i PSU
    My desktop uses the ThinkVision 31.5 inch P32p-20 Monitor.
    My sound system is the Edifier B1700BT
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