Nvidia 9400M in new Apple notebooks

Discussion in 'Architecture and Products' started by Zengar, Oct 15, 2008.

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  1. INKster

    INKster
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    You are confusing the discrete 9400 GS/GT GPU core (G96) with the motherboard chipset/IGP called 9300M/9400M G/9400M GS (MCP79).
    The later have dual-channel (128bit) memory support for either DDR2 or DDR3 memory.
     
    #21 INKster, Oct 16, 2008
  2. Zengar

    Zengar
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    I was refering to the information provided on the nvidia website.

    9400M – http://www.nvidia.com/object/product_geforce_9400m_g_us.html
    9300M – http://www.nvidia.com/object/product_geforce_9300m_g.html

    The bus width is supposed to mean the GPU memory interface width.

    I am unsure what the performance relation to the desktop IGP will be.
     
    #22 Zengar, Oct 16, 2008
  3. INKster

    INKster
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    Nope, look closer:

    9400M G - "Memory Interface: 128bit"
    9300M mGPU - "DDR Support: Dual DDR3-1333"

    Nvidia giving two different looking spec sheets for basically the same chip donned with different clocks and product numbers is a mystery to me, but the essential info is there nevertheless.
     
    #23 INKster, Oct 16, 2008
  4. Zengar

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    I am not convinced. I think the info only concerns the GPU part. But the pages are really strange: 9300M spec sheet has no info about the chipset features whatsoever, while 9400M spec sheet is silent about GPU clocks...
     
    #24 Zengar, Oct 16, 2008
  5. INKster

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    The 9400M doesn't have dedicated memory or "Sideport Memory" schemes like AMD's 780G/790GX, so any it uses must come from main system RAM.
    The spec is correct, both the 9300M and the 9400M support Dual-channel RAM (a.k.a., "128bit" memory bus), because actual differences between them are their respective clockspeeds.
    Nothing else.
     
    #25 INKster, Oct 16, 2008
  6. Zengar

    Zengar
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    #26 Zengar, Oct 16, 2008
  7. INKster

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    Look at the maximum amount of RAM (256MB) and speed (600MHz-> 1200MHz GDDR3, instead of DDR3-1066/1333), shader clock (800MHz, while the 9300M IGP runs them at 1.2GHz), etc.
    That's the page of a discrete GPU called "9300M G" (G98, i believe), not of the IGP with -almost- the same name (9300M mGPU).

    Nvidia should have gone with "9100" and "9200" for the naming scheme of these new IGP's, this is just too confusing for those not in the know...
     
    #27 INKster, Oct 16, 2008
  8. Zengar

    Zengar
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    Ohhh, now I get it... sorry for being so stupid. I really got lost at that website...
     
    #28 Zengar, Oct 16, 2008
  9. AnarchX

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    #29 AnarchX, Oct 16, 2008
  10. DegustatoR

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    #30 DegustatoR, Oct 16, 2008
  11. emacs

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    the latest MacBook Pro has caught my attention because i'm in the market to purchase a notebook within the next three months. i'm keen to see real-world benchmarks of the 9400M. after more than six (6) years away from software development i'm looking forward to getting back 'to the editor' amd see how things have changed since the turn of century.
     
    #31 emacs, Oct 19, 2008
  12. Pressure

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    BareFeats have several mini-reviews up comparing the new MacBook Pro with the Geforce 9400M and the Geforce 9600M GT.

    3D Graphics Benchmarks
    CPU Crunch Benchmarks
    GPU Comparison
     
    #32 Pressure, Oct 23, 2008
  13. Pete

    Pete Moderate Nuisance
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    #33 Pete, Oct 24, 2008
  14. shiznit

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    Lenovo T400 or T500 are a much much better value, outstanding battery life on the 400 and LED screen option, and both have hybrid switchable graphics (runs intel x4500 by default and you can enable ATI when you need it in real time). The radeon 3670 in the t500 is one of the faster gpus in sub-17'' laptops, I prefer nvidia but apparently they weren't compatible with the hybrid graphics. Search for the CPP (contractor purchase program) code and you will get a massive discount, a fully pimped out T series can be bought for ~$1000
     
    #34 shiznit, Oct 27, 2008
    Last edited by a moderator: Oct 29, 2008
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