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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 Precision 5420 notebook with 32GB RAM and a Dell Wireless 1820 card 802.11ac + Bluetooth 4.2, 2x2 (I meant to order the Intel card so I called Dell and am having a tech install an Intel on Tuesday).
I do have QOS on, I'm hooked to the 5GHZ SSID, and set the limit on the R900 to the max speed (1733 mbps), but am still only getting 200 mbps on average. I ran the speed test on the router (within the settings) and am getting 800 mbps at the router, just not on my laptop. This tells me there is a breakdown somewhere at the router WiFi or my laptop radio.
Any ideas what I can try to get the full 800 mbps speed on my laptop wifi?
TIA
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).
18 Replies
wrote: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 Precision 5420 notebook with 32GB RAM and a Dell Wireless 1820 card 802.11ac ... Any ideas what I can try to get the full 800 mbps speed on my laptop wifi?
Well, this Dell 1820 card is a 2*2 card which can handle a best link rate of 866 Mb/s - real-world throughput will be much less. The ~200 Mb/s are about all of it. Even good 3*3 clients don't exceed 300 Mb/s. The router, no much more any router can't make any wonders, even if it does support 3*3 on 160 MHz ... trouble is that the latest clients are using 2*2 on 160 MHz bandwidth (because most notebook makers just install two antennas...$$$ what is sufficient for "average" WLAN client equipment) ... and we're awaiting the real 802.11ac Wave 2 160 MHz mode on 2*2 for the R9000 later. Whatever Inhell wireless card Dell on-site service will install, please let us know.
Hope you are not to much blinded by the marketing lies by the WiFi industry.The card they'll be installing is the Intel WiFi Link 8265 Card (802.11ac + Bluetooth 4.2), 2x2
I was afraid the issue might be related to the limitations of the card. Blinded, no. Frustrated, yes. The thought of having 800 mbps is exciting.
I'm going to try the other model as well and see if the results are the same. That should be the ultimate test, but I am thinking the results will be the same.
Reagrding "the real 802.11ac Wave 2 160 MHz mode on 2*2". Can you elaborate? Are there external options for this right now?
Here's a screen shot of my adapter. Notice the 300 mbps speed. Does this speed indicate the max proving your point?
The "Dell Wireless 1820" is the problem. 2x2 MIMO is the limiting factor. I hope "Understanding wifi speeds" at duckware.com/wifi helps explain why...
