The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    Lenovo Y510/Y500 Nvidia 650M v. 750M BIOS FLASH THEORY

    Discussion in 'Lenovo' started by swoley2k, Jun 17, 2013.

  1. swoley2k

    swoley2k Notebook Deity

    Reputations:
    304
    Messages:
    812
    Likes Received:
    0
    Trophy Points:
    30
    Hello,

    I've been doing the whole GPU mod/bios tweak thing since the radeon 9500 to 9700 days...

    Lately i've been very interested in the Lenovo Y series and currently have a Y410P on the way after giving up on getting a 750m ultrabay for my Y400. However, all this ultrabay mislabelling and unavailability fiasco has me thinking:

    The 650M and the 750M are identical chips (GK107) 28mm die, same memory type. The clock speeds are different however. This is no different than Intel CPUS being the same chip but different speeds having different models. The 'core' of the GPU is the same.

    Given the fact that the Y500 ultrabay fits into the new Y510P, why not purchase a Y500 650M ultrabay and flash it with a 750M bios (using override mismatch ID option)?

    The catch here would be if there are some differences in the way the ultrabay is handled itself. Is the fact that it is an add-in card with its own connector enough to make the bios code significantly different than the already onboard 750m chip in the Y510P? The trick would be to scour both the on board 750m and the ultrabay 650m bios code with a very fine tooth comb and determine the differences other than the usual device ID names, clock speed differences, etc.

    Basically, if the 650M ultrabay is not different in any other ways than the 750M on board, you could simply copy the 750M bios and flash it to the 650M ultrabay, thus creating a 750M ultrabay.

    You would of course save the 650M ultrabay bios for future safety/storage. One question would be is there a nvidia bios program that can detect hardware from whatever internal ultrabay connector the Y series uses? Another question would be are there any nvidia bios reading programs that have been updated to include 7x0M series chips....

    Anyway...you old school bios hacking, copper modding, pencil lead pipeline opening, paper clip solder to solder volt modders know where I am coming from with this. I don't have the resources but i'm sure some real old school grimey people out here can find a way!
     
    swoley2k, Jun 17, 2013
    #1