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Technical News & Discussion => Windows News & Discussion => Topic started by: tehidyman on Aug 28, 2010, 12:25:59

Title: Download units and times query
Post by: tehidyman on Aug 28, 2010, 12:25:59
As download speeds are given in Kbps, I assume that as there are 8bits to 1Byte then a download speed of 1000 kbps is 125KBps and that assuming there are 1024 KB to 1MB, and 1024 MB to 1 GB then it should take 8388 seconds to download 1 GB at 1000kbps.
I then calculate that if I download 1GB a month then seeking to increase my download speed from 2000Kbps to 2500Kbps will save me about 28 seconds a day.  Is it worth it (no answers needed)? I have assumed that IDnet bandwidth figures are in GB.

Are my calculations and assumptions correct though.  Comments appreciated.
Title: Re: Download units and times query
Post by: Rik on Aug 28, 2010, 12:37:40
I think your initial figures are about right, but an increase in speed of 25% should save you 3355 seconds a month, or about 110 seconds a day. However that ignores DNS lookup times, site response times etc. In practice, therefore, I don't think you'd notice the difference. I think.  :stars:
Title: Re: Download units and times query
Post by: tehidyman on Aug 28, 2010, 14:17:50
Thanks Rik, I agree with the  :stars:. I reckon I spent about 25 years worth of potential time-saving checking facts and figures but maybe it will cure me of chasing speed increases.
Title: Re: Download units and times query
Post by: Rik on Aug 28, 2010, 15:29:03
 ;D

We get to the same spot with just a small delay, it's why I've been able to live with a 2.5-3.5M line for so long. Now, if I was downloading movies etc, I'd probably feel different.
Title: Re: Download units and times query
Post by: Technical Ben on Aug 28, 2010, 18:38:32
Great site that helped me (although it took me a good few minuets to figure out) is this one.
http://web.forret.com/tools/bandwidth.asp?speed=3478&unit=MB%2Fs
It does every conversion imaginable. (Although you still need google to know How many unicorns there are on a blue moon (http://www.google.com/search?hl=en&q=number+of+horns+on+a+unicorn+once+in+a+blue+moon&aq=4&aqi=h1g6&aql=&oq=number+of+horns+on+a+unicorn+&gs_rfai=).
Title: Re: Download units and times query
Post by: Rik on Aug 28, 2010, 18:40:06
:rofl:
Title: Re: Download units and times query
Post by: tehidyman on Aug 29, 2010, 17:13:22
Quote from: Technical Ben on Aug 28, 2010, 18:38:32
Great site that helped me (although it took me a good few minuets to figure out) is this one.
:thnks:Interesting site and potentially useful, but it took me a symphony to get my head round it.
Title: Re: Download units and times query
Post by: esh on Aug 31, 2010, 19:00:45

In [1]: gb = 1024 * 1024 * 1024

In [2]: time = lambda rate: gb/((rate*1e3)/8)

In [3] = (time(2000) - time(2500))/31.0
Out[3]: 27.709451612903209


I agree!