GTX 780 Ti: BIOS flashing question

Discussion in 'Videocards - NVIDIA GeForce' started by samtroy, May 16, 2014.

  1. samtroy

    samtroy Member

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    GPU:
    Inno3D GTX 780 Ti 3GB
    Hello,

    I own a Inno3D GTX 780 Ti graphics card which is the normal reference design from NVidia (as far as I know). My BIOS version is:

    Inno3D - GTX 780 Ti 3072 MB - 2013-09-30 - 80.80.30.00.01 - 876 / 1750

    Now I found an newer NVIDIA BIOS for the 780 Ti (from techpowerup):

    NVIDIA - GTX 780 Ti 3072 MB - 2013-10-23 - 80.80.34.00.01 - 876 / 1750

    The two card look absolutely the same and also have the exact same technical specs. The device ID is also the same: 10DE-100A-10DE-1051. But what puzzels me a little bit is that the two BIOS files have different sizes:

    My Original Inno3D BIOS: 238.080 KB
    The newer NVIDIA BIOS: 201.728 KB

    Is this a problem? Can I flash that newer NVIDIA 780 Ti BIOS on my Inno3D card (which should be the NVIDIA reference design)?

    Thanks for any help!
     
    Last edited: May 16, 2014
  2. mbk1969

    mbk1969 Ancient Guru

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    If you are not afraid to turn the card into brick or to have BSODs in Windows or to have troubles with new drivers installation, then no problems.

    Edit: I just remembered that the difference in BIOS files sizes can be due to the lack of UEFI boot block. Does your rig boots in UEFI or in legacy mode?
     
    Last edited: May 16, 2014
  3. samtroy

    samtroy Member

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    I have a Z87 Asus mainboard with UEFI BIOS. So yes, I guess I boot in UEFI mode.

    (I just edited my tech specs in my Guru3D profile, that was still my old system... sorry for that.. ;)
     
    Last edited: May 16, 2014
  4. mbk1969

    mbk1969 Ancient Guru

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    Not the presence of UEFI BIOS makes UEFI boot, but the mode of Windows installation. Disk should have GPT layout, Windows should be x64...
     

  5. samtroy

    samtroy Member

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    GPU:
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    Yes, my HDDs are GPT, Windows 8.1 is x64.

    I just can't understand why it shouldn't be possible to flash an original NVIDIA BIOS on a NVIDIA reference design card with the same tech specs, even if its from another company.. Shouldn't this be possible?? But of course I don't wanna risk bricking my card.. :-(
     
    Last edited: May 16, 2014
  6. mbk1969

    mbk1969 Ancient Guru

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    Vendors get either the whole cards (or PCB with all parts except cooler) or GPU chips, and the BIOS images from NVIDIA, I suggest. In case of whole card vendor just prints its logo. Also vendor can test cards and modify tables in BIOS to achieve optimal performance/stability ratio.
     
    Last edited: May 16, 2014
  7. samtroy

    samtroy Member

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    OK, I see. Like I pointed out: Even the device ID is the same (10DE-100A-10DE-1051). So I think my Inno3D 780Ti card might be an 100% unaltered NVIDIA card and the BIOS will work without a problem. But of course I'm not absolutely sure..
     
  8. mbk1969

    mbk1969 Ancient Guru

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    My previous card was Palit GTX 670. They has another version - GTX 670 Steam. Mine was reference one and the Steam version was custom. Palit`s site offered BIOS updates for Steam version and don`t for mine one. So you can check on site of vendor.
    If card works why do you want to flash another BIOS?

    I did modify 670`s BIOS to lower either max boost frequency and min fan percent to lower the noise. But that was modification of original BIOS. I would never flash BIOS if there is no info on compatibility.
     

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