X850 Pro MOD to X850XT/XT PE

Discussion in 'Links' started by jblade, Aug 21, 2005.

  1. jblade

    jblade Member

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    GPU:
    ATI X850 Pro Flashed to X850XT PE
    This mod works just like the X800 one, (you gotta download the modded flashrom)
    (My card has 1.6 NS memmory, and is AGP, from what I understand, PCI-E CAN't be flashed.

    Completing this mod successfully will unlock all of the 16 pipelines your X850 Pro has.

    In order to have a moddable card you just need to have the 1.6ns memmory (I do not think 2.0ns works) and the yellow VIVO thingy next to your purple power input.

    All credit goes towards W1zzard from forums.techpowerup.com
    all I did was change the guide from X800 to X850

    Performing the Mod:


    Download modified flashrom.
    Download Bios from here.
    I suggest the latest X850XT PE Bios.
    A little sidenote: Many people complain that they get a "file not found" error when trying to flash the bios under DOS. The problem is that DOS does not know long filenames, so all files are truncated to some funky names like Powerco~1.bin. Either use the dir command, when in DOS, to find out the short filename or rename the file to something shorter while still in Windows.
    Make sure the card can reliably run at the clock speeds of the new bios (with ATITool, for example).
    Use the modified flashrom to flash the Bios to the card. More extensive flashing instructions can be found here. They talk about atiflash - you use the modified flashrom, usage is the same.
    After bootup Windows should automatically install the X800 XT PE driver.
    Verify the number of active pipelines using ATITool. Go to Settings -> Overclocking. The list there shows the number of pipelines the card is running with.

    If you want to remove all traces of previous Bios flashes (for example if you flashed the Gigabyte Bios):
    Use modified flashrom to flash empty.bin (use "Save as..." if weird characters appear when clicking the link) to your video card, then flash the new Bios without rebooting. Be careful - if you don't flash a real Bios after flashing the empty Bios, your card will not work properly.

    Note:

    If your going to use the stock cooler from the X850 Pro, I suggest that you downclock your card back to the 500 1000 speeds, or just dont do the mod , until you buy a cooler like this one, or this one. Otherwise you will certainly get errors and artifacts (The stock cooler on the XT's and XT PE's is a lot better then the Pro one

    Extra Info:
    The card I have is a X850 PRo AGP with the little yellow VIVO thingy. I am preaty sure that has a huge difference on the ability to flash or not. Since the core of the AGP is different from te PCI-E

    Edit:
    - I highly suggest this way of doing the mod, as far as the bios is concerned. As the X850 Pro AGP are not really supposed to be clocked higher then the default of 500/500, unless you have a custom fan, and even then the speeds exceeding that of a X850 XT are dangerous to your card. This bios is clocked at normal Pro speeds and thus ensures your cards safety.
     
    Last edited: Jan 1, 2006
  2. gobbles

    gobbles Member Guru

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    GPU:
    x800 -> x800 xt pe 526/570
    What is the benefit of flashing an x850 pro to xt pe?
     
    Last edited: Aug 21, 2005
  3. scatman839

    scatman839 Ancient Guru

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    GPU:
    7970m/970 Mini, KD55XD800
    faster speeds, and maybe a temp controlled fan
     
  4. jblade

    jblade Member

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    GPU:
    ATI X850 Pro Flashed to X850XT PE
    It enables all 16 pipelines, instead of just 12. Also, in The CCC Overdrive is enabled.
     

  5. Ehecu

    Ehecu Maha Guru

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    GPU:
    Sapphire Vapor-X HD 5750
    I was under the impression that X850 Pro cores were laser cut, making a soft-mod impossible...
    The only proven case I've seen is an X800 Pro --> XT.
     
  6. jblade

    jblade Member

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    GPU:
    ATI X850 Pro Flashed to X850XT PE
    I have a X850 Pro and its flashed to a X850XT PE, although I am only running it at X850 Pro speeds until I get my Zalman VGA Cooler.
     
  7. FreakyMe

    FreakyMe Member

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    GPU:
    ATI RADEON x850xt 256mb @600/617
    I was wondering would this work with putting a 850xt to 850xt PE? for those of us who got a cheaper XT but want PE performance :p
     
  8. jblade

    jblade Member

    Messages:
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    GPU:
    ATI X850 Pro Flashed to X850XT PE
    Theres no difference that I know of, the BIOS might allow the RAM to run cooler, but yes it would work 100%. All XT's can be flashed to XT PE. Although I am not sure what it would do. The Pro only has 12 pipelines, while the XT and XT PE has 16, thats the reason I flashed.
     
  9. reflex

    reflex Ancient Guru

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    GPU:
    BFG 8800GT 725/1800/2000
    Just OC the x850xt to x850xt pe speeds, its not a huge overclock at all, only a increase of 20mhz on the core and 40mhz on the memory or something
     
  10. clawhamer

    clawhamer Ancient Guru

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    GPU:
    EVGA 780 Classified
    I agree with reflex, if you have the xt, it already has 16 pipes so there really is no need to risk flashing it.
     

  11. jblade

    jblade Member

    Messages:
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    GPU:
    ATI X850 Pro Flashed to X850XT PE
    Well if someone has a X850XT and wants to test it out, go for it. The risk is very low. All you gotta do is OC it to PE, run the fan at a constant speed, record temps load and idle, then flash it, and do the same thing. i just know from experience with ATI, that the tend to have more then the just the OC, and its that it has a improved BIOS.
     
  12. dedmonds12

    dedmonds12 New Member

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    jblade, can you confirm this works with the x850 pro and it unlocks pipelines? I too was under the impression unlocking was impossible with the x850. Do you have an screenshots of this working? thanks
     
  13. jblade

    jblade Member

    Messages:
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    GPU:
    ATI X850 Pro Flashed to X850XT PE
    I dont have a screenshot, because my card was getting too hot (80degrees) cause I was using stock cooler. I will probally get my Zalman VGa fanheatsink by tomorrow, then I will take pics, or try to at least.

    Just check if your memmory ends with a 16, and has the Yellow vivo thingy, and your good to go. However, I do not recommened doing this until you get a new cooler.

    oh its important to know
    My card is AGP and I think that is what cause the difference in flashability.
     
  14. sean478

    sean478 Active Member

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    GPU:
    X850 XT Platinum Edition
    guys i stress dont get a x850 under the impression that it will unlock to 16 pipes jblade is the only one i have ever heard of who actualy did it and ive heard of at least 10 trying it personaly

    its just best to asume that it wont mod :(
     
  15. jblade

    jblade Member

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    GPU:
    ATI X850 Pro Flashed to X850XT PE
    IS yours AGP? Does it have 1.6 ns memmory?
     

  16. sean478

    sean478 Active Member

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    GPU:
    X850 XT Platinum Edition
    mine? its pcie with 1.6 :)

    but i bought it as a xt and flashed to a pe :) not from a pro :)
     
  17. Salem13

    Salem13 Master Guru

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    GPU:
    EVGA 1070 FTW DT
    *boohoo*

    Got the sucker flashed, running at XT speed no problem, only 12 pipes showing with ATITool. :(
     
  18. sean478

    sean478 Active Member

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    GPU:
    X850 XT Platinum Edition
    leave it like that it wont hurt it :)
     
  19. ehren13

    ehren13 New Member

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    I'd just like to state that this mod worked COMPLETED as described by the OP. I had an ATI x850 Pro, WITH the yellow VIVO connector, and 1.6ns Samsung Memory Modules.

    After flashing the BIOS, ATITool reported 16 pipes, and I was off and running.

    Now I just need to hook it into my water loop via my Maze4GPU block, and we'll see how high I can overclock this sucker ;D

    Thanks!!!!


    EDIT ---

    Oops! Forgot to note that I had the AGP version of the card... =)
     
  20. sean478

    sean478 Active Member

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    GPU:
    X850 XT Platinum Edition
    intersting... that makes 3 sucess stories... out of 4 this past week congrats dudes :)

    all seem to be with the (agp) x850 pro (vivo)
     

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