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Which Version of DX Is Used When Gaming On Windows 7?

By Ritwik7
Jan 9, 2010
  1. Hi everybody!

    I plan to install Windows 7 within a week on my PC. I play games such as Crysis, Mirror's Edge, Call Of Duty Modern Warfare, etc. Will the games by default use DX10 after installation? Do I have to select any special modes?

    Also, I know that Win 7 comes with DX11. Do I need to install DX10 or DX9 on it?

    Really stupid questions I guess. Awaiting your responses.

    Thanks.
     
  2. captaincranky

    captaincranky TechSpot Addict Posts: 11,706   +1,887

    No, it should be backward compatible. But, Dx-9 and Dx-10 programs won't suddenly become Dx-11 either.
     
  3. Ritwik7

    Ritwik7 TechSpot Chancellor Topic Starter Posts: 1,672   +9

    Thanks there Captain.

    Just wondering, some games seem to have have to "game".exe icons. One for DX10 and one for DX9 when I install them in XP. For example, Assassin's Creed and Devil May Cry 4. But others don't. So will the default operation be DX10 on Win 7?
     
  4. vectorsigma32

    vectorsigma32 TS Rookie Posts: 154

    it should be sw3t backward compatibility
     
  5. captaincranky

    captaincranky TechSpot Addict Posts: 11,706   +1,887

    I guessing that that games have coding to match the DX version of their date of release. Games that you mention were written at the time between XP and Vista, so their coding allows them to run correctly under either OS. It does seem a bit superfluous to allow or permit user intervention, when the game really should be sensing the OS and adjusting. But, I can't write code, so it's easy for me to criticize or speculate.
     
  6. hellokitty[hk]

    hellokitty[hk] Hello, nice to meet you! Posts: 3,435   +145

    Me too, I would just go with the latest version. If it works, good, if it doesn't, try the other one not a problem.
     
  7. dividebyzero

    dividebyzero trainee n00b Posts: 4,891   +1,258

    You can probably load the latest DX- you should be able to force an earlier version in the ATI Control Panel in games that don't normally support it, also disabling Full Dynamic Lighting in games usually drops the DirectX used back to 9.0c
     
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