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Solved: Figuring the mathematics of download speeds

Discussion in 'Networking' started by Old_Fart, Feb 9, 2013.

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  1. Old_Fart

    Old_Fart Thread Starter

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    I'm not sure if this is the correct forum to ask this question, or not.

    I'm hoping to find someone who is expert enough in mathematics enough to help me determine the following issue.

    Issue: What download speed should I expect to recieve while downloading a 20GB (GigaByte) update patch while using my AT&T service plan which is: [1.5Mb's/sec (MegaBits) up to 3.0Mb's/sec (MegaBits)]?

    Reason: When downloading update patches for a game I play, its download speed reports an average of 320KB's/sec (KiloBytes). That seems too slow for me. It took me over 18 hours to download 20GB's the other day.

    It reports speeds in KB's/sec (KiloBytes), yet my service plan refers to Mb's/sec. (MegaBits)

    Based upon my plan, what should I expect to see in the download speed reported by the program which is downloading the file? Is 320KB's/sec (Bytes) the proper speed, or should it be higher?

    I must have missed that day at school. I don't know how to determine if my download speed is being THROTTLED, or by whom, if it is.

    Note: During the download, I had already uninstalled my anti-virus program so that it wouldn't conflict. My At&T 2-Wire router/modem Firewall was "On", and it had all the required PORTS Open for the program)s) I was downloading from.

    Your help will be appreciated, greatly!
     
  2. prunejuice

    prunejuice

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    Too many variables...

    - network congestion
    - speed of servers
    - quality of ISP's equipment
    - theoretical speed vs real speed
     
  3. TerryNet

    TerryNet Moderator

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    Eight bits in a Byte. 320 KBps is 2,560 Kbps is 2.56 Mbps. That's good for a service that is "up to" 3.0 Mbps. :)

    The download speed is limited by your service, and may be less 'cause you are also doing other internet activity, a slow or busy server on the other end, or congestion in the network.
     
  4. Old_Fart

    Old_Fart Thread Starter

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    Thanks, TerryNet. You explained it all, and I'm relieved. I'll be happier if only I win a Megalotto and can then upgrade. heh heh. Until then, I'll just have to be more patient for those rediculously slow downloads.

    Thanks for replying with an understandable answer.
     
  5. TerryNet

    TerryNet Moderator

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    You're welcome. :)
     
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