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Can two 9800GT cards with different memory be SLI configured?

By hatman3345
Jul 26, 2010
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  1. Dear SLI tech people,

    I have 2 Inno3d 9800 GT cards in my computer. The only difference is one is a 512Mb and one is a 1Gb card. I only got the 1Gb because it was given to me. Now with them being slightly different spec I dont get a box to tick in the 3d settings of my NVIDIA control panel to enable SLI. That I get cos the cards need syncing if thats the term.

    Now once upon a time, NVIDIA wrote on their website that Coolbits could be used (set to value 18) to make my two cards work together so I did the following:

    Enabling CoolBits;

    Step 1. Click on your Start Menu in the Windows Task Bar and select Run. When the command box opens, type "regedit" (without the quotes) and press OK. With the registry editor open, go to HKEY_LOCAL_MACHINE \SOFTWARE \NVIDIA Corporation \Global \NVTweak (expand the menu using the "+" expansion buttons to locate this menu item). Click on "NVTweak" in the menu. Next, right-click on the empty space inside right window and choose "New>DWORD value". Name the value "Coolbits" (without the quotes).

    Step 2. Within the Registry Editor, right click on Coolbits and choose Modify. Change the Value data to "18" (without the quotes) and click OK. Exit the Registry Editor.


    Nothing has changed and with the newest drivers and software from NVIDIA their System Tools addon still nothing.

    My ASUS motherboard must be sli-ready because it came with the bridge which i have slotted in as required.

    The 2 cards are recognised but I just cant get them into SLI. Any ideas?

    Oh, and do I have to watch which way round the cards are slotted in my PC and with my bridge not indicating which way round it should go am I ok to just put it on any which way?

    Please help because I like games.
  2. raybay

    raybay TS Evangelist Posts: 10,716   +6

    Yes they can... Look at the site of the cards.
  3. hatman3345

    hatman3345 TS Rookie Topic Starter Posts: 25

    No luck

    I have looked and no directly relative questions have been answered. All driver links go to NVIDIA. Am I looking in the wrong place at Inno3D's site?
  4. red1776

    red1776 Omnipotent Ruler of the Universe Posts: 5,896   +88

    Are you sure that the second, or third PCIE slot on your MB does not have a jumper or BIOS setting that needs to be adjusted when running it in SLI ?
    Secondly, I have not run into myself, but I have heard of cards flashed with a different bios version/revision not allowing SLI.
  5. hatman3345

    hatman3345 TS Rookie Topic Starter Posts: 25

    Ive not touched on BIOS stuff. What would i be lookin out for and where?
  6. hatman3345

    hatman3345 TS Rookie Topic Starter Posts: 25

    By the way, does Coolbits even work anymore? Or does the new NVIDIA software not allow for tweaks like that. Im not even sure what creating a coolbits reg file would have done had it worked. There;s hardly anything about it on the web
  7. hatman3345

    hatman3345 TS Rookie Topic Starter Posts: 25

    Im running out of ideas though guys. Please walk me through if you have any ideas
  8. Ritwik7

    Ritwik7 TechSpot Chancellor Posts: 2,288   +7

  9. hatman3345

    hatman3345 TS Rookie Topic Starter Posts: 25

    Well, Ive done everything I can on this. Activating coolbits hasn't worked (I think because the nature of the nvidia software has changed since coolbits was introduced a few years back). My motherboard is definitely set properly as Ive followed the instructions in my manual. Here is the latest system report:


    Processor: AMD Athlon(tm) 64 X2 Dual Core Processor 4400+ (2211 MHz)
    Operating System: Microsoft Windows XP, 32-bit (Service Pack 3)
    DirectX version: 9.0
    GPU processor: GeForce 9800 GT
    Driver version: 258.96
    CUDA Cores: 112
    Core clock: 600 MHz
    Shader clock: 1500 MHz
    Memory clock: 900 MHz (1800 MHz data rate)
    Memory interface: 256-bit
    Memory: 512 MB
    Memory type: GDDR3
    Video BIOS version: 62.92.3A.00.00
    IRQ: 18
    Bus: PCI Express x8
    GPU processor: GeForce 9800 GT
    Driver version: 258.96
    CUDA Cores: 112
    Core clock: 600 MHz
    Shader clock: 1500 MHz
    Memory clock: 900 MHz (1800 MHz data rate)
    Memory interface: 256-bit
    Memory: 1024 MB
    Memory type: GDDR3
    Video BIOS version: 62.92.24.00.00
    IRQ: 19
    Bus: PCI Express x8

    [Components]

    nvCplUIR.dll 3.3.532.01 NVIDIA Control Panel
    nvCplUI.exe 3.3.532.01 NVIDIA Control Panel
    nvWSSR.dll 6.14.12.5896 NVIDIA Workstation Server
    nvWSS.dll 6.14.12.5896 NVIDIA Workstation Server
    nvViTvSR.dll 6.14.12.5896 NVIDIA Video Server
    nvViTvS.dll 6.14.12.5896 NVIDIA Video Server
    nvMoblSR.dll 6.14.12.5896 NVIDIA Mobile Server
    nvMoblS.dll 6.14.12.5896 NVIDIA Mobile Server
    nvDispSR.dll 6.14.12.5896 NVIDIA Display Server
    NVMCTRAY.DLL 6.14.12.5896 NVIDIA Media Center Library
    NVOGLNT.DLL 6.14.12.5896 NVIDIA Compatible OpenGL ICD
    nvDispS.dll 6.14.12.5896 NVIDIA Display Server
    NVCPL.DLL 6.14.12.5896 NVIDIA Compatible Windows 2000 Display driver, Version 258.96
    NV4_MINI.SYS 6.14.12.5896 NVIDIA Compatible Windows 2000 Miniport Driver, Version 258.96
    NV4_DISP.DLL 6.14.12.5896 NVIDIA Compatible Windows 2000 Display driver, Version 258.96
    PhysX 09.10.0224 NVIDIA PhysX
    NVCUDA.DLL 6.14.12.5896 NVIDIA CUDA 3.1.1 driver
    nvGameSR.dll 6.14.12.5896 NVIDIA 3D Settings Server
    nvGameS.dll 6.14.12.5896 NVIDIA 3D Settings Server


    Notably the PCI Express section says PCI-E x8 which is odd. My motherboard is an Asus A8N-SLI Deluxe so it should be fine. The other thing is the video bios is very slightly different for each card along with the IRQ

    Please help guys. Im really struggling on this.
  10. avenom

    avenom TS Rookie

    Inno3d 9800GT 1024MB BIOS

    Hello hatman3345. I was searching for inno3d 9800GT origional bios as mine is currupted and cant boot now. i saw your post of having two inno3d 9800GT with one 1gb. PLease can you upload your inno3d 9800GT 1GB bios file it will help me get my vga working i will be very greatfull to you.

    Please help me out. you can use gpu-z to extract bios its completely safe. i am really hoping to hear from you soon.

    thanks for your time
  11. dividebyzero

    dividebyzero trainee n00b Posts: 4,848   +679

    @avenom
    If you don't have any luck with contact from hatman3345, you can always flash your BIOS with one of these
     
  12. avenom

    avenom TS Rookie

    i tried but nothing works it gives me mismatch error...vendor mismatch, boeard type mismatch etc. Now he's the only hope or else i have to buy new one


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