Slow Airport Extreme ?

[BadaBing!!]

Bought an Airport Extreme yesterday after reading mostly excellent user reviews.
I'm just wondering why my WIFI client ( iPhone4, iPad2, Airport Express and IBM T410) won't connect at faster speed though.

Here is my config
(I also tried some other configs but with almost all the same results)

And the reported clients connection speeds (All at 3 ft from the AE):

iPad2, Airport Express and T410 (OK Speed) all connected to the 5Ghz band and sitting few feet from the AE
Why aren't they connected at faster rates ?

Some iPerf performances test from the T410 when within 3ft too

[176] local 192.168.200.50 port 5001 connected with 192.168.200.54 port 63880
[ ID] Interval       Transfer     Bandwidth
[176]  0.0-10.0 sec  65.9 MBytes  55.3 Mbits/sec
[268] local 192.168.200.50 port 5001 connected with 192.168.200.54 port 63885
[ ID] Interval       Transfer     Bandwidth
[268]  0.0-10.0 sec  68.7 MBytes  57.7 Mbits/sec
[256] local 192.168.200.50 port 5001 connected with 192.168.200.54 port 63887
[ ID] Interval       Transfer     Bandwidth
[256]  0.0-10.0 sec  73.7 MBytes  61.9 Mbits/sec
[252] local 192.168.200.50 port 5001 connected with 192.168.200.54 port 63888
[ ID] Interval       Transfer     Bandwidth
[252]  0.0-10.0 sec  65.4 MBytes  54.9 Mbits/sec

And from about 20ft and few walls

[252] local 192.168.200.50 port 5001 connected with 192.168.200.54 port 63941
[ ID] Interval       Transfer     Bandwidth
[252]  0.0-10.0 sec  56.2 MBytes  47.1 Mbits/sec
[256] local 192.168.200.50 port 5001 connected with 192.168.200.54 port 63943
[ ID] Interval       Transfer     Bandwidth
[256]  0.0-10.0 sec  46.5 MBytes  39.0 Mbits/sec
[268] local 192.168.200.50 port 5001 connected with 192.168.200.54 port 63944
[ ID] Interval       Transfer     Bandwidth
[268]  0.0-10.0 sec  47.1 MBytes  39.6 Mbits/sec
[176] local 192.168.200.50 port 5001 connected with 192.168.200.54 port 63946
[ ID] Interval       Transfer     Bandwidth
[176]  0.0-10.0 sec  46.8 MBytes  39.3 Mbits/sec
[260] local 192.168.200.50 port 5001 connected with 192.168.200.54 port 63947
[ ID] Interval       Transfer     Bandwidth
[260]  0.0-10.0 sec  40.5 MBytes  34.0 Mbits/sec

 

[mulo]

could be distance, the 5ghz band weakens a lot faster then the 2.4ghz band when you move away form the router.

 

[BadaBing!!]

could be distance, the 5ghz band weakens a lot faster then the 2.4ghz band when you move away form the router.

I was editing my post when you posted but no, all the devices are within 3-4 feet of the Airport ...

I was wondering if I should by the AEBS or the Netgear WNDR3700 ... I might go and by the Netgear to compare speeds but honestly, I don't really want to take time to do it

 

[BadaBing!!]

I enabled 40Mhz (instead of default 20Mhz) and I'm getting very nice speeds from my T410 (which now shows a connected speed of 270Mbps)

Speed measured few feet from the router:

C:\Users\18225\Documents\My Dropbox>iperf -c 192.168.200.50
------------------------------------------------------------
Client connecting to 192.168.200.50, TCP port 5001
TCP window size: 63.0 KByte (default)
------------------------------------------------------------
[128] local 192.168.200.53 port 49275 connected with 192.168.200.50 port 5001
[ ID] Interval       Transfer     Bandwidth
[128]  0.0-10.0 sec  93.6 MBytes  78.5 Mbits/sec

C:\Users\18225\Documents\My Dropbox>iperf -c 192.168.200.50
------------------------------------------------------------
Client connecting to 192.168.200.50, TCP port 5001
TCP window size: 63.0 KByte (default)
------------------------------------------------------------
[128] local 192.168.200.53 port 49276 connected with 192.168.200.50 port 5001
[ ID] Interval       Transfer     Bandwidth
[128]  0.0-10.0 sec  92.7 MBytes  77.7 Mbits/sec

C:\Users\18225\Documents\My Dropbox>iperf -c 192.168.200.50
------------------------------------------------------------
Client connecting to 192.168.200.50, TCP port 5001
TCP window size: 63.0 KByte (default)
------------------------------------------------------------
[128] local 192.168.200.53 port 49278 connected with 192.168.200.50 port 5001
[ ID] Interval       Transfer     Bandwidth
[128]  0.0-10.0 sec  91.8 MBytes  77.0 Mbits/sec

and

C:\Users\18225\Documents\My Dropbox>netio -t 192.168.200.50

NETIO - Network Throughput Benchmark, Version 1.31
(C) 1997-2008 Kai Uwe Rommel

TCP connection established.
Packet size  1k bytes:  10087.40 KByte/s Tx,  9142.63 KByte/s Rx.
Packet size  2k bytes:  12.48 MByte/s Tx,  8891.17 KByte/s Rx.
Packet size  4k bytes:  12.27 MByte/s Tx,  9891.57 KByte/s Rx.
Packet size  8k bytes:  12.83 MByte/s Tx,  11.16 MByte/s Rx.
Packet size 16k bytes:  13.08 MByte/s Tx,  10.52 MByte/s Rx.
Packet size 32k bytes:  13.26 MByte/s Tx,  14.42 MByte/s Rx.
Done.

 

[BadaBing!!]

Less impressive from about 15 feet and 3 walls from the Airport though

C:\Users\18225\Documents\My Dropbox>netio -t 192.168.200.50

NETIO - Network Throughput Benchmark, Version 1.31
(C) 1997-2008 Kai Uwe Rommel

TCP connection established.
Packet size  1k bytes:  5385.50 KByte/s Tx,  4222.90 KByte/s Rx.
Packet size  2k bytes:  5671.33 KByte/s Tx,  4419.66 KByte/s Rx.
Packet size  4k bytes:  4953.83 KByte/s Tx,  5129.97 KByte/s Rx.
Packet size  8k bytes:  4886.41 KByte/s Tx,  6024.12 KByte/s Rx.
Packet size 16k bytes:  6108.07 KByte/s Tx,  5290.56 KByte/s Rx.
Packet size 32k bytes:  4660.43 KByte/s Tx,  5569.24 KByte/s Rx.
Done.

and

C:\Users\18225\Documents\My Dropbox>iperf -c 192.168.200.50
------------------------------------------------------------
Client connecting to 192.168.200.50, TCP port 5001
TCP window size: 63.0 KByte (default)
------------------------------------------------------------
[128] local 192.168.200.53 port 49414 connected with 192.168.200.50 port 5001
[ ID] Interval       Transfer     Bandwidth
[128]  0.0-10.0 sec  36.8 MBytes  30.8 Mbits/sec

C:\Users\18225\Documents\My Dropbox>iperf -c 192.168.200.50
------------------------------------------------------------
Client connecting to 192.168.200.50, TCP port 5001
TCP window size: 63.0 KByte (default)
------------------------------------------------------------
[128] local 192.168.200.53 port 49416 connected with 192.168.200.50 port 5001
[ ID] Interval       Transfer     Bandwidth
[128]  0.0-10.0 sec  35.8 MBytes  30.0 Mbits/sec

C:\Users\18225\Documents\My Dropbox>iperf -c 192.168.200.50
------------------------------------------------------------
Client connecting to 192.168.200.50, TCP port 5001
TCP window size: 63.0 KByte (default)
------------------------------------------------------------
[128] local 192.168.200.53 port 49417 connected with 192.168.200.50 port 5001
[ ID] Interval       Transfer     Bandwidth
[128]  0.0-10.0 sec  43.5 MBytes  36.5 Mbits/sec

 

[BadaBing!!]

Do you think those speed are OK ??