Upgrading the Wi-Wi-card in an Asus ROG Strix G16 from a MediaTek MT7922 (Wi-Fi 6E) to a Qualcomm QCNCM865 (Wi-Fi 7) lifts measured throughput by roughly 50 % at 1.8 m and 42 % at 7.6 m, but the gain rarely changes everyday internet experiences. The test shows why the headline-grabbing “320 MHz bandwidth, 4096-QAM” promises often outpace what most users actually need.

Why the upgrade looks tempting

Router makers tout Wi-Fi 7’s 320 MHz channels and 4096-QAM modulation as a shortcut to gigabit-plus speeds. For a gaming-oriented laptop like the Strix G16, squeezing every last megabit feels natural, especially when developers swap components at year-end.

Real-world numbers

The tester replaced the stock MediaTek chip with the Qualcomm QCNCM865 and ran iPerf3 on the 6 GHz band. At 1.8 m the new card delivered 50 % more data per second; at a typical 7.6 m desk distance the gain fell to 42 %.

When the extra speed matters

Multi-Link Operation (MLO)—using several frequency bands at once—shines only in massive local transfers or a crowded office with 15-30 active devices. For web browsing, video calls, or online gaming on a 200-500 Mbps connection, the ISP, not the Wi-Fi card, becomes the bottleneck.

Hidden bottlenecks

Three practical constraints often erase the theoretical gain:

  • Router compatibility – Pairing a Wi-Fi 7 card with a legacy router forces it back to Wi-Fi 6 or 5 speeds.
  • Storage bandwidth – A NAS limited to a 1 GbE Ethernet port caps transfers at about 113 MB/s. Without a 2.5 GbE (or faster) interface, the laptop can’t push more data than the storage can accept.
  • Use case – Streamers and browsers won’t notice a difference; only users moving large files across a high-speed local network benefit.

What to check before you buy

  • Do you already own a Wi-Fi 7 router? If not, the upgrade will be throttled by the older router’s limits.
  • Is your local network hardware fast enough? Verify that your NAS, switch, or dock supports at least 2.5 GbE.
  • Will you regularly transfer multi-gigabyte files or run many simultaneous connections? If the answer is no, the extra cost of a Wi-Fi 7 module is hard to justify.

Outlook

Early adopters may find future-proof value in the upgrade, but for most current users the modest throughput bump does not outweigh the hidden constraints.

Takeaway: Unless your setup already includes a Wi-Fi 7 router and a high-speed LAN backbone, sticking with Wi-Fi 6E on the Strix G16 delivers the same real-world experience at a lower cost.