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R9000 - only getting 25% WiFi speed on 802.11ad 5GHz
I purchased the router brand new yesterday and upgraded our internet service to 800 mbps, but I am only getting 200 mbps over wifi (I do get 800 mbps with ethernet cable). I have a brand new Dell Pre...
foxbrady, 300.0 Mbps PHY speed explains a lot. schumaku is right, that PHY rate implies 40Mhz channel width, but you should be able to do better?
On Dell PC:
- log in as admin
- computer management / device manager / network adapters
- double click on adapter / click on 'Advanced' tab
- Check these adapter properties:
- channel width for 5 GHz (want auto)
- HT mode (want VHT)
If those settings look OK, sign onto router and verify the 5GHz wireless settings: For "mode" (speed) of 5GHz -- want 'up to 1733', which is 80Mhz channe (other settings reduce channel to 40Mhz and 20 Mhz).
foxbrady, The speed you see in the dialog (866.7 Mbps) is the PHY (physical) speed of the wireless. On a 2x2 802.11ac card, that is the max. But then there is protocol overhead on top of that, which is substantial (more info at duckware.com/wifi) At the application level, expect anywhere from 45% to 65% of the PHY speed. You are seeing 426/866.7 (49%), which is certainly in that range. So that is the max you will get from that 2x2 wireless card. You would have to switch to a 3x3 or 4x4 card to increase speed (but the laptop may only have 2 antennas, so you can't upgrade without adding something external via USB?)
Thank you everyone! I am very satisfied.