This is officially my first post, I'm sharing the channel bandwidth performance results of a Cisco AIR-CAP2702I-A-K9 which is a 3x4 MIMO with three spatial streams 801.11ac Wave 1 AP. The idea is to test the throughput you can get out of this AP with a 80 MHz channel bonding. Since I know every vendor has its own driver and algorithms, I decided to test 4 different 2x2 usb adapters:
The results are listed exactly as above, the Asus performed better than the rest, Linksys almost the same as Asus, D-Link and Netgear very similar but considerably lower than Asus and Linksys. I used IPERF to generate traffic and saturate the channel, important to mention that eventhough I used a Cisco 2504 controller, the AP was running on FlexConnect mode, to avoid sending the traffic back to the controller.
If you are not familiar with the MCS index, here is a chart so you can know what to expect from a 11ac W1 2x2 connection, 867 Mbps pretty much.
The Asus usb adapter was able to get up to 616 Mbps of throughput out of a association to the AP of 867 Mbps, which means, the highest possible data rate you can get with a 2x2/80 Mhz/ 11ac W1 connection. Everything was tested under ideal conditions of course.
The Linksys adapter was able to get up to 570 Mbps, very close to Asus.
The D-Link performance was not as good as expected, I ran the test several time, since I thought I was doing something wrong, but always got the same result. I was able to get up to 310.9 Mbps.
The Netgear adapter performed almost the same as the D-Link I got up to 305.8 Mbps.
So, every device can perform different, depending on the vendor drivers, this test was performed when the AP2702 was recently release, since then new drivers may have been release and the performance of these clients may be better today.
I hope this has been informative to you, thank you for reading.