Confused about the new MBP video card...

Discussion in 'MacBook Pro' started by marclapierre13, Dec 11, 2008.

  1. marclapierre13 macrumors 6502a

    marclapierre13

    Joined:
    Jul 7, 2005
    #1
    For the stock MBP, it says "NVIDIA GeForce 9400M + 9600M GT with 256MB"
    Now the macbook has the 9400m as well, and it is shared with the motherboard, integrated.
    So is the new MBP have the same 9400m 256MB shared, plus an additional 256mb 9600M dedicated?

    Or what...?
     
  2. Tallest Skil macrumors P6

    Tallest Skil

    Joined:
    Aug 13, 2006
    Location:
    1 Geostationary Tower Plaza
    #2
    Looking at even the Apple site would show you that, yes, it has both.
     
  3. iSpoody 1243 macrumors 6502

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    Jun 29, 2008
    Location:
    Australia
    #3
    yep just as you said, it has the integrated and the dedicated
     
  4. marclapierre13 thread starter macrumors 6502a

    marclapierre13

    Joined:
    Jul 7, 2005
    #4
    Actually that quote in the OP is exactly what the apple website says, and that is very vague...
    "NVIDIA GeForce 9400M + 9600M GT with 256MB" can mean that 256mb is divided between 9400M and 9600m...or it could mean it has 256MB 9600M and an additional 9400M, which only people that do their research and notice the MB has the 9400M, states it is 256Mb shared.

    Thanks iSpoody for confirming this.
     
  5. iSpoody 1243 macrumors 6502

    Joined:
    Jun 29, 2008
    Location:
    Australia
    #5
    okay
    you can only use one graphics card at a time,
    9400 used the ram for its memory
    9600 has its own memory
     
  6. marclapierre13 thread starter macrumors 6502a

    marclapierre13

    Joined:
    Jul 7, 2005
    #6
    Interesting, ive never heard about this before. So do you set which graphicsa card you want to use at what time? Or does it switch automatically when you need more memory? What is the point of this?
     
  7. iSpoody 1243 macrumors 6502

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    Jun 29, 2008
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    Australia
    #7
    you choose, 9600 uses more battery but has more power, 9400 uses less battery but is less powerful, for the system to change between gpu "i think" it needs to reboot
     
  8. marclapierre13 thread starter macrumors 6502a

    marclapierre13

    Joined:
    Jul 7, 2005
    #8
    Wow, very interesting. I suppose its a great feature, for those that need to switch to conserve battery power or need the power on the fly...I know when I take my laptop on the go, I mostly need more battery life, because I am mostly typing or surfing the web, when at home I need the extra power though for CS3 and what not. To bad you have to reboot though, but I guess it needs to be done.
     
  9. Sun Baked macrumors G5

    Sun Baked

    Joined:
    May 19, 2002
    #9
    Basically the 9400 is part of the chipset and the 9600 connected to that through a mux.
    Code:
    MacBook
    
    CPU <---> [Integrated Nvidia N/S w built in 9400] <---> LCD
    
    MacBook Pro
    
    CPU <---> [Integrated Nvidia N/S w built in 9400] <---> [graphics mux] <---> LCD
    [COLOR="White"]CPU <---> [Integrated Nvidia N/S w built in [/COLOR]9600 <--------/
     
  10. darngooddesign macrumors G3

    Joined:
    Jul 4, 2007
    Location:
    Atlanta, GA
    #10
    You don't have to reboot, only logout. Allegedly Snow Leopard will use both cards in tandem and you won't have to logout to switch.
     
  11. kelvin805 macrumors newbie

    Joined:
    Dec 10, 2008
    #11
    The 9400m gfx card draws from your regular ram. The 9600 draws from the discrete ram that's part of the video card. Unless you're playing games of doing intensive editing, you really don't need the 9600. Only a logout is required to switch between the cards. Nvidia pioneered these cards as something that is a hyrbid SLi, but they said that Apple needs to write the coding for that, so it is yet to be seen when we will see a true hybrid sli between the two cards.
     
  12. marclapierre13 thread starter macrumors 6502a

    marclapierre13

    Joined:
    Jul 7, 2005
    #12
    well i do play games, and i play some in boot camp as well, so a dedicated graphics card is useful. As well as some photo editing.

    Will the shared 9400m be enough for that, or no?

    Also, when video game requirements say "minimum 128mb" or "256mb", if it says 256mb, would the 9400m cover that?
     
  13. The Flashing Fi macrumors 6502a

    Joined:
    Sep 23, 2007
    #14
    In Windows, you use the 9600M GT only.
     
  14. marclapierre13 thread starter macrumors 6502a

    marclapierre13

    Joined:
    Jul 7, 2005
    #15
    IC, thanks.
     
  15. kasakka macrumors 68000

    Joined:
    Oct 25, 2008
    #16
    Wouldn't it make more sense that the same 256 MB was employed by whichever video card is in use? And if eventually both can be used then they would share the VRAM.
     
  16. darwinian macrumors 6502a

    darwinian

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    In R4, more or less
    #17
    This is unconfirmed though, right?
     

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