The new iMac does 450 Mb/s WiFi

HardMac reports that  that the latest iMac family released this week support up to 450 Mbit/sec Wi-Fi. Apple first brought the 450Mbps WiFi features in the 2011 MacBook Pro family, but they haven’t been actively advertising it. Apple changed their Airport card and also installed 3 antennas (instead of 2 before), something indispensable to be able simultaneously to use 3 channels of 150 Mbits/s. Each antenna is capable of a data rate of 150 Mbit/sec. Combined, the three antennas achieve the 450 Mbit/sec speeds using the multiple-input/multiple-output (MIMO) wireless standard.

As noted by AppleInsider, the newest iMacs and MacBook Pros must be running a developer build of Lion to take advantage of the 450 Mbit/sec speeds. And MacRumors notes that in order to actually take advantage of the 450 Mbit/sec speed, you'll need to have a compatible wireless router, such as the latest AirPort Extreme or TimeCapsule.