1/2 the video memory when using dual displays?

Discussion in 'Macintosh Computers' started by proverbs, Sep 13, 2005.

  1. macrumors 6502

    Joined:
    Mar 15, 2005
    #1
    i noticed that if i am running dual displays on my powerbook and open a game, then my pb lcd goes out and i use my 20" monitor (primary) while i'm playing my game. does this mean i am running the full v-ram on my 20" or is the v-ram still split in half?

    for example, if i bought tiger woods 2005 which requires 64mb v-ram, but i only have 64mb v-ram and would like to use my 20" monitor rather than my pb lcd, will it be using the full 64mb on the 20"?
     
  2. macrumors 6502a

    Joined:
    Jul 29, 2005
    #2
    wow that's a good question, I'd like to know as well. bump.
     
  3. Moderator emeritus

    mad jew

    Joined:
    Apr 3, 2004
    Location:
    Adelaide, Australia
    #3
    To the best of my knowledge, it will divide the VRAM in half unless you put the PowerBook into clamshell mode.
     
  4. thread starter macrumors 6502

    Joined:
    Mar 15, 2005
    #4
    how do i do that?
     
  5. macrumors 65816

    TheMonarch

    Joined:
    May 6, 2005
    Location:
    Bay Area
    #5
    Add KB+Mouse... Then close it... So mac-like :D
     
  6. Moderator emeritus

    mad jew

    Joined:
    Apr 3, 2004
    Location:
    Adelaide, Australia
    #6
    I'm only 99% sure it'll then give you all the VRAM though. Still, it's certainly worth a try. :)
     
  7. thread starter macrumors 6502

    Joined:
    Mar 15, 2005
    #7
    ic...i don't know why i never thought of that!? :)
     
  8. thread starter macrumors 6502

    Joined:
    Mar 15, 2005
    #8
    is there a way to check this - like Ram and CPU usage with Activity Monitor?
     
  9. Moderator emeritus

    mad jew

    Joined:
    Apr 3, 2004
    Location:
    Adelaide, Australia
    #9
    You should be able to see it in System Profiler which can be accessed through the Apple menu - About this Mac and then More Info, under the Graphics/Displays section. :)
     
  10. thread starter macrumors 6502

    Joined:
    Mar 15, 2005
    #10
    on the bottom part it says:

    ViewSonicP810-3:
    Display Type: CRT
    Resolution: 1152 x 870 @ 75 Hz
    Depth: 32-bit Color
    Core Image: Supported
    Main Display: Yes
    Mirror: Off
    Online: Yes
    Quartz Extreme: Supported
    Rotation: Supported
    Display:
    Online: No
    Status: No display connected

    it says that the mirror is off and there is no display connected - so i'm guessing it is getting the full 128mb v-ram on the 20"???
     
  11. Moderator emeritus

    mad jew

    Joined:
    Apr 3, 2004
    Location:
    Adelaide, Australia
    #11
    Yeah, I'm guessing you're right. Sorry, I thought it would have told you the VRAM split. :eek:
     
  12. macrumors 65816

    neocell

    Joined:
    May 23, 2005
    Location:
    Great White North
    #12
    I'm sorry, my ignorance at work here, I have no idea what what this means. I've wanted to try my PB in clamshell mode but never knew how to do it, then someone tells me and I still don't know how to do it.
    Clarification for the idiot please :confused:
     
  13. thread starter macrumors 6502

    Joined:
    Mar 15, 2005
    #13
    just plug-in a keyboard and mouse - when the pb goes to sleep after you close it, awake it from sleep with the keyboard or the mouse.
     
  14. macrumors 65816

    neocell

    Joined:
    May 23, 2005
    Location:
    Great White North
    #14
    Ah so easy and obvious, man I feel like a 3 year old right now. :eek:
     
  15. macrumors regular

    kaylee

    Joined:
    Mar 21, 2004
    Location:
    Australia
    #15
    http://docs.info.apple.com/article.html?artnum=86286 <- how to use powerbook with display closed

    i can't find any articles about video ram with external display, but from memory/experience, it will split the video ram if you are using both displays at once, but not if you put the powerbook into clamshell mode (all video ram should be used for external display).
     

Share This Page