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Wireless Networks Thread, Wireless N Speeds in Technical; Hi Guys and Girls, Looking for some input as to why my Centrino 2 laptop with built in N wireless ...
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    CHR1S's Avatar
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    Wireless N Speeds

    Hi Guys and Girls,

    Looking for some input as to why my Centrino 2 laptop with built in N wireless can only get a maximum of 1.5mbps throughput to and from the Netgear WNR3500. Im pulling files via Gigabit wired PCs so I know its the wireless. Got the latest drivers and firmware etc etc.
    I have a support call open with Netgear but they are morons, the first 3 replys asked me how fast my internet connection should be and who provided it!

    Thanks

    Chris

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    PeterW's Avatar
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    Is it ok connected to other wireless routers/aps ?

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    CHR1S's Avatar
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    In addition, I have used netstumbler to check for other channels interfearing and tried others just incase.

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    CHR1S's Avatar
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    Quote Originally Posted by PeterW View Post
    Is it ok connected to other wireless routers/aps ?
    I had a Linksys N router before and got over 6mbps with the exact same setup (was RMAed tho).

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    CHR1S's Avatar
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    So Netgear seem to think a sustained transfer speed of 1.3MB/sec on a 150+Mbps link speed is VERY FAST! Despite getting 1.6MB/sec sitting here now on an old G AP connected at 38Mbps.

    Does anyone have any calculations to hand for the theoretical maximum link to throughput speeds for N?

    Thanks

    Chris

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    SYNACK's Avatar
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    Theoreicly 300 megabits per second / 8 = 37.5 megabytes per second on a laptop with its antennas directly wired to the AP with no encryption - 20% for TCP/IP overhead = 30 megabytes per second.

    Half it if channel bonding is not used and divide it up among the number of active hosts equaly in a near perfect situation.
    Last edited by SYNACK; 5th March 2009 at 11:22 AM.

  7. Thanks to SYNACK from:

    CHR1S (5th March 2009)

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    CHR1S's Avatar
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    So I should be expecting around 15Mb/sec throughput? And im getting 1.5Mb/sec. Are these the same and im just mixing my mb and mbits or is it way off?

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    SYNACK's Avatar
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    I would be expecting a bit more than that unless you are in a really congested area for wireless or are downloading through a couple of brick walls. The 15MB/s is from a wireless speed of about 150MBits/s. Have you tried looking at the network signal through wireshark to see how strong and stable it is?

    This could interest you:
    http://arstechnica.com/hardware/revi...-roundup.ars/4

    Vs

    http://arstechnica.com/hardware/revi...-roundup.ars/6
    Last edited by SYNACK; 5th March 2009 at 11:37 AM.

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    CHR1S's Avatar
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    Sitting no more than 4 feet from the AP, on a channel with nothing else on it in pure N mode with no other wireless devices with a link speed of around 150Mbps.

    I will get wireshark installed tonight.

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