PCI-E wifi adapter VS Onboard AC adapter

May 17, 2018
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I have been using TP-LINK TL-WDN4800 N900 Wireless Dual Band PCI Express Adapter for about 2 years now without any issues during gaming. I just purchased the ASrock Z370 Killer SLI/AC Motherboard. It comes with the AC adapter built into the motherboard with two antenna near the I/O Shield. Should I be using the onboard AC or using the N band PCI-E network adapter. I will be using 5.0 ghz frequency so compatibility is not an issue with either one.