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Internet speed

post #1 of 11
Thread Starter 
I am getting very fast internet speed with Comcast and my Ncard equipped laptop---like about

60Mbs---but when I plug the laptop into my N Airport Express, my speed is only 18-20Mbs--

Is speed limited on the Express---I have it set up to do iTunes and to join the network---

Thanks for your help
post #2 of 11
Quote:
Originally Posted by sammick View Post

I am getting very fast internet speed with Comcast and my Ncard equipped laptop---like about

60Mbs---but when I plug the laptop into my N Airport Express, my speed is only 18-20Mbs--

Is speed limited on the Express---I have it set up to do iTunes and to join the network---

I think that there are a few things going on here:

1) You have to differentiate between Mb (megabits, or 1000 * 1000 bits) from MiB (megabytes, or 1024 * 1024 * 8 bits). Networking speed is always measured in Mb, but most Mac programs measure downloads in MiB. Make sure that your two measurements are using the same measuring system.

2) 802.11n's top theoretical speed is 300 Mb/sec, or about 35 MiB/sec ( that is 300*1000*1000/8*1024*1024). Then you need to take at least 10-15% off the top for protocol overhead (both WiFi and download protocol such as http and IP), and then some more for non-perfect radio environment.

Given all that you are not doing so badly. And if you are using an environment with both 802.11g and 802.11n deices, then you are also losing some speed to maintaining backwards compatibility.
post #3 of 11
In fact, there is a standard covering all units.
Correct units would be:

Mbit/s - megabits per second
MB/s - megabytes per second
where M is power of ten, one thousand times.

or:

Mibit/s - mebibits per second
MiB/s - mebibytes per second
where Mi is power of two.

Please see http://physics.nist.gov/cuu/Units/binary.html
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post #4 of 11
Isn't that, like crazy fast?

Quote:
Originally Posted by sammick View Post

I am getting very fast internet speed with Comcast and my Ncard equipped laptop---like about

60Mbs---but when I plug the laptop into my N Airport Express, my speed is only 18-20Mbs--

Is speed limited on the Express---I have it set up to do iTunes and to join the network---

Thanks for your help
post #5 of 11
Quote:
Originally Posted by Fosters View Post

Hey Dude.... How to check the internet speed.......?

Try an internet speedometer, bro!
post #6 of 11
Thread Starter 
Quote:
Originally Posted by EmelineAdkinsons View Post

This might help lots of people find out about this matter.

There are several sites that you can use to test your speed---one is put on by Speakeasy another

is called Pingtest.net
post #7 of 11
This is the speed I am getting from my hard wired Mac Mini tonight.



My MBP on my N network has never passed about 26Mbps download and 4Mbps download.
post #8 of 11
Quote:
Originally Posted by Hammie View Post

This is the speed I am getting from my hard wired Mac Mini tonight.




HOW.

Originally posted by Relic

...those little naked weirdos are going to get me investigated.
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Originally posted by Relic

...those little naked weirdos are going to get me investigated.
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post #9 of 11
Do you have it set to 5GHz spectrum only?
Have you tried changing the broadcast channels?
Do you have robustness turned on?
You will always get slower performance wirelessly.

Open up /Applications/Utilities/Network Utility.
What is the link speed on en1 or Airport? 130Mb would be mixed and 320Mb would be 5GHz, roughly.
What's your vector Victor?
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What's your vector Victor?
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post #10 of 11
Quote:
Originally Posted by zarishpk View Post

it is not compatible for this.

Please stop posting. You don't know anything about what you're saying, if your sentence makes any sense in context at all.

Originally posted by Relic

...those little naked weirdos are going to get me investigated.
Reply

Originally posted by Relic

...those little naked weirdos are going to get me investigated.
Reply
post #11 of 11
Quote:
Originally Posted by hammie View Post

this is the speed i am getting from my hard wired mac mini tonight.



my mbp on my n network has never passed about 26mbps download and 4mbps download.


lan party at your house!!!!!!

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"I just got lost in thought. It was unfamiliar territory." - proverb
RepairZoom.com Best Apple fix around!
Best Buy - Special Agent 5 Years
Apple - Specialist 1 1/2 Years
Best Years of my LIFE!

Reply
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