how fast SHOULD 802.11n be?

[brentsg]

I was using SFTP to transfer files around. Activity Monitor, iStat Pro, and the file sizes matched to 48-50 Mbps.

I'm sorry but that is impossible. The theoretical maximum throughput for 802.11g is around 27Mbit/s due to all of the overhead. There is no way to achieve higher than that, and typical throughput is in the 10-20Mbit/s range.

There are many, many studies that can be Googled to explain the details.

Even this IEEE white paper references ~24Mbit/s throughput as a possible benchmark in a perfectly clean environment with no "b" clients and no interference of any kind. http://www.54g.org/pdf/802.11g-WP104-RDS1.pdf

Ugh sorry, I didn't see that I was replying to an ancient post.

 

[Tex-Twil]

Ok I've just tried to switch to 802.11n only @ 5 Ghz and I have a bandwidth of around 4MB/s ... that's better


btw

I'm sorry but that is impossible. The theoretical maximum throughput for 802.11g is around 27Mbit/s due to all of the overhead. There is no way to achieve higher than that, and typical throughput is in the 10-20Mbit/s range.

There are many, many studies that can be Googled to explain the details.

Even this IEEE white paper references ~24Mbit/s throughput as a possible benchmark in a perfectly clean environment with no "b" clients and no interference of any kind. http://www.54g.org/pdf/802.11g-WP104-RDS1.pdf

I totally agree.

 

[eckbert]

If 100 Mbit Ethernet is Faster than 300 Mbit Wlan

Look at this
http://www.dslreports.com/faq/3743
This
http://discussions.apple.com/message.jspa?messageID=8316872
and try Cocktail
http://www.maintain.se/cocktail/index.php

When I change the optimizing settings in Cocktail to CableModem from the default, the performance increases by 2 MB/s from 4 MB/s to 6 MB/s - I am copying a 3.9 GB file from an Airport Extreme attached USB 2.0 drive.

But there shouldn't be anything else interfering e.g. when i fetch my 3000+ Spam Mails at the same time copying time goes up from 8 to 30 minutes.
TCP tuning can be a science but cocktails default work quite good for most situations.

 

[Rlwings]

Totally wrong!

First of all, The N wifi standard runs at 300Mbps...And ALWAYS will run at 300Mbps...The 'overhead' is included in this number, but can be easily removed by disabling the security, which 'steals' almost half of the bandwidth...Most information broadcasted in the home wifi environment is of very little importance to potential hackers, it simply doesn't happen....In fact due to the short range of wifi, the chances that a hacker would be lurking outside your house with the proper equipment is astronomically low.

I easily peak at 300Mbps on my n wifi network. And large files will always transfer at 300Mbps...Unless some other force is acting upon the standard bandwidth of 300Mbps....Like the highly unnecessary security features.

Plus, some routers will allow for streaming...which uses all bandwidth..(The information exchanged to facilitate streaming is done before the transfer...so, during the transfer 300Mbps is FULLY available.

 

[theSeb]

First of all, The N wifi standard runs at 300Mbps...And ALWAYS will run at 300Mbps...The 'overhead' is included in this number, but can be easily removed by disabling the security, which 'steals' almost half of the bandwidth...Most information broadcasted in the home wifi environment is of very little importance to potential hackers, it simply doesn't happen....In fact due to the short range of wifi, the chances that a hacker would be lurking outside your house with the proper equipment is astronomically low.

I easily peak at 300Mbps on my n wifi network. And large files will always transfer at 300Mbps...Unless some other force is acting upon the standard bandwidth of 300Mbps....Like the highly unnecessary security features.

Plus, some routers will allow for streaming...which uses all bandwidth..(The information exchanged to facilitate streaming is done before the transfer...so, during the transfer 300Mbps is FULLY available.

I am actually shocked that you've managed to fit so much misinformation and bs into one post. Kudos sir. Nothing in your post is correct.

 

[Tex-Twil]

i am actually shocked that you've managed to fit so much misinformation and bs into one post. Kudos sir. Nothing in your post is correct.

+1

 

[kilidar]

Using Aaiport extreme the best i was able to get:

802.11g negotiates at 54 mbits/s maximum i got is 24 mbits/s
802.11n negotiates at 300 mbits/s maximum i got is 130 mbits/s
1000BaseT negotiates 1000 mbits/s maximum i got is 220 mbits/s

test using ftp to a server connected to AE with 1 gigethernet and a PC with g, n, and gigethernet.

 

[kilidar]

First of all, The N wifi standard runs at 300Mbps...And ALWAYS will run at 300Mbps...The 'overhead' is included in this number, but can be easily removed by disabling the security, which 'steals' almost half of the bandwidth...Most information broadcasted in the home wifi environment is of very little importance to potential hackers, it simply doesn't happen....In fact due to the short range of wifi, the chances that a hacker would be lurking outside your house with the proper equipment is astronomically low.

I easily peak at 300Mbps on my n wifi network. And large files will always transfer at 300Mbps...Unless some other force is acting upon the standard bandwidth of 300Mbps....Like the highly unnecessary security features.

Plus, some routers will allow for streaming...which uses all bandwidth..(The information exchanged to facilitate streaming is done before the transfer...so, during the transfer 300Mbps is FULLY available.

just disabled security on my extreme and did not see any bandwidth increase.
security back on now, I wouldnt run without, even if you hide your SSID.

 

[Manacit]

First of all, The N wifi standard runs at 300Mbps...And ALWAYS will run at 300Mbps...The 'overhead' is included in this number, but can be easily removed by disabling the security, which 'steals' almost half of the bandwidth...Most information broadcasted in the home wifi environment is of very little importance to potential hackers, it simply doesn't happen....In fact due to the short range of wifi, the chances that a hacker would be lurking outside your house with the proper equipment is astronomically low.

I easily peak at 300Mbps on my n wifi network. And large files will always transfer at 300Mbps...Unless some other force is acting upon the standard bandwidth of 300Mbps....Like the highly unnecessary security features.

Plus, some routers will allow for streaming...which uses all bandwidth..(The information exchanged to facilitate streaming is done before the transfer...so, during the transfer 300Mbps is FULLY available.

Either you're trolling, or just pants on head retarded.

Thanks for the laugh!

Can we have a video of you transferring at 300mbps?

 

[bigjobby]

Yep, its definitely porky pies.

To say 300Mbits/s of throughput was achieved would mean that there were no overhead... not possible.