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    X200 can utilize full power of intel 5300?

    Discussion in 'Lenovo' started by Kubala, Nov 28, 2008.

  1. Kubala

    Kubala Notebook Enthusiast

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    I see in the specs of the x200 that the screen has a 2x2 antennaes set. If I order the notebook with the Intel 5300, which can support 2x3, it's actually doesn't utilize all it's power.
    Intel claims that with 2x3 and the 5300, you can get up to 450Mbps instead of only 300Mbps.


    *** Edited for clarity ***
     
    Kubala, Nov 28, 2008
    #1
  2. Xirurg

    Xirurg ORLY???

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    em,I don't understand anything...
     
    Xirurg, Nov 28, 2008
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  3. Tinderbox (UK)

    Tinderbox (UK) BAKED BEAN KING

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    Tinderbox (UK), Nov 28, 2008
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  4. cjcerny

    cjcerny Notebook Consultant

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    Yeah...he assumed a few things...I ran it through the universal translator too. :)

    He's asking if he'll get better throughput using "N" wifi if he has all the antennas "N" can possibly support in his laptop. "N" can support up to 2 sets of 3 antennas. Theoretically, your throughput is better if you have all those antennas. I believe the answer is probably "sure, maxing out the number of antennas that the 'N' standard supports certainly couldn't hurt" followed closely by "it's probably too soon to tell (no one has a lot of experience with 'N' yet) if having all those antennas will actually amount to any performance increase at all".
     
    cjcerny, Nov 28, 2008
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  5. dyfrgi

    dyfrgi Notebook Enthusiast

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    Kubala,

    If you look on page 129 of the ThinkPad X200 and X200s Hardware Maintenance Manual, you'll see that it shows four antennas: Wireless LAN AUX, Wireless LAN Main, MIMO, and Wireless USB. Be sure you look at that diagram and not the earlier one for the CFL screen with the WWAN antennas.

    The MIMO antenna is a receive-only antenna used for the "3" in the 2x3 UltraConnect II antenna. 2x3 means 2 transmitters and 3 receivers, in 802.11n MIMO parlance. The 5300 can do 3x3, so it's not quite the full power, but it's still much better than the 1x2 supported by the 5100!
     
    dyfrgi, Nov 28, 2008
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  6. dyfrgi

    dyfrgi Notebook Enthusiast

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    The 5300, with its support for 3x3 antennas, actually only uses 3 antennas. It's just that it can use each antenna either for transmitting or receiving, thus 3x3.
     
    dyfrgi, Nov 28, 2008
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  7. Kubala

    Kubala Notebook Enthusiast

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    Thanks for the explanation.
     
    Kubala, Nov 29, 2008
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