No, it doesn't seem to.

=========================================================
$ iwconfig
virbr0-nic  no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:"VM851079-2G"  
          Mode:Managed  Frequency:2.462 GHz  Access Point: 10:0D:7F:18:C4:80   
          Bit Rate=130 Mb/s   Tx-Power=16 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=70/70  Signal level=-30 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:56   Missed beacon:0

virbr0    no wireless extensions.

lo        no wireless extensions.
======================================================
$ iperf -c 192.168.0.102
------------------------------------------------------------
Client connecting to 192.168.0.102, TCP port 5001
TCP window size: 85.0 KByte (default)
------------------------------------------------------------
[  3] local 192.168.0.3 port 39692 connected with 192.168.0.102 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.1 sec  21.2 MBytes  17.6 Mbits/sec
========================================================
$ sudo iwconfig wlan0 power off
[sudo] password for : 
========================================================
$ iwconfig
virbr0-nic  no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:"VM851079-2G"  
          Mode:Managed  Frequency:2.462 GHz  Access Point: 10:0D:7F:18:C4:80   
          Bit Rate=130 Mb/s   Tx-Power=16 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=70/70  Signal level=-30 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:107   Missed beacon:0

virbr0    no wireless extensions.

lo        no wireless extensions.
=======================================================
$ iperf -c 192.168.0.102
------------------------------------------------------------
Client connecting to 192.168.0.102, TCP port 5001
TCP window size: 85.0 KByte (default)
------------------------------------------------------------
[  3] local 192.168.0.3 port 39693 connected with 192.168.0.102 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.1 sec  13.1 MBytes  10.9 Mbits/sec
================================================
[Tried again immediately afterwards, without changing anything]
$ iperf -c 192.168.0.102
------------------------------------------------------------
Client connecting to 192.168.0.102, TCP port 5001
TCP window size: 85.0 KByte (default)
------------------------------------------------------------
[  3] local 192.168.0.3 port 39694 connected with 192.168.0.102 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.1 sec  27.4 MBytes  22.8 Mbits/sec


** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

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https://bugs.launchpad.net/bugs/1450755

Title:
  Intel Wireless-N 2230 4x faster in Windows 7 than 15.04 (iwlwifi)

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