An AF5 or AF5X PTP link isn't a transparent 1Gb full duplex bridge, realistically you'll achieve 250-400 Mbps max. They're great radios but physics is still physics, 40 or 80 MHz wide dual polarity channel at 256QAM 5/6 code rate is not 1GbE.
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Given the context that the parent was saying "I'd seen the 5mbps ones but nothing close to a gigabit", and was talking about a non-commercial setup, it still seems relevant.
Also curious...they show 5470-5950 MHz...from my layperson standpoint, that seems to allow for more than 80MHz wide. What's the actual story? The UBNT forums seems to indicate 2 separate 50Mhz channels, one for TX...one for RX.
That span is the total allowable space in the FCC part 15 rules for 5 GHz gear, where the AF5/5X has been tested and certified. Other radios can be used from 5200 to 5850 MHz (DFS frequencies permitting).
But the size of the channels it can operate in are 5, 10, 15, 20, 30, 40, 60 or 80 MHz wide. Software configurable on the radio.