Stuck at 300 mbps on wireless network

[Karyean]

Hello!
I recently purchased a TL-WDN4800 at 450 mbps.
My router which is a D-LINK DIR-822 (supports 5ghz).

All my settings is auto, this card runs at 450 mbps, but when I checked the wifi speed, it's stuck at 300 mbps.
I have already updated my wifi card to the latest drivers which is Atheros AR938x 10.0.0.326.

Is there any way I can get max speed at 450 mbps on wireless connection?

I am basically 20-25 meters away from the router as well!

Thanks!

Here for my settings on router! Thanks

 

[Dunlop0078]

From what I can find your wireless card supports at best wireless N, which will cap out around 300mbps. Your wireless AC router is capable of more than that but only with an AC supported wireless card. What speeds do you pay for from your ISP?

 

[Karyean]

From what I can find your wireless card only supports wireless N, which will cap out around 300mbps. Your wireless AC router is capable ore more than that but only with an AC supported wireless card. What speeds do you pay for from your ISP?

Oh, I see. My internet speed is like 15 DL mpbs with 1MB UPL, I think for like 29$/month(Toronto).

Oh, I see, so I need an AC wireless card for it to become 450 mbps?

 

[Dunlop0078]

From what I can find your wireless card only supports wireless N, which will cap out around 300mbps. Your wireless AC router is capable ore more than that but only with an AC supported wireless card. What speeds do you pay for from your ISP?

Oh, I see. My internet speed is like 15 DL mpbs with 1MB UPL, I think for like 29$/month(Toronto).

Oh, I see, so I need an AC wireless card for it to become 450 mbps?

Yeah 450mbps theoretical speeds, it would likely do better than that actually up to 1200mbps with AC I believe. But as far as actual internet upload and download speeds, you will be limited to what you pay for from your ISP, so 15mbps down and 1mbps up.

 

[Karyean]

From what I can find your wireless card only supports wireless N, which will cap out around 300mbps. Your wireless AC router is capable ore more than that but only with an AC supported wireless card. What speeds do you pay for from your ISP?

Oh, I see. My internet speed is like 15 DL mpbs with 1MB UPL, I think for like 29$/month(Toronto).

Oh, I see, so I need an AC wireless card for it to become 450 mbps?

Yeah 450mbps theoretical speeds, it would likely do better than that actually up to 1200mbps with AC I believe. But as far as actual internet upload and download speeds, you will be limited to what you pay for from your ISP, so 15mbps down and 1mbps up.

Ah, I see! Thank you so much!

 

[vmfantom]

Hello!
I recently purchased a TL-WDN4800 at 450 mbps.
My router which is a D-LINK DIR-822 (supports 5ghz).

All my settings is auto, this card runs at 450 mbps, but when I checked the wifi speed, it's stuck at 300 mbps.
I have already updated my wifi card to the latest drivers which is Atheros AR938x 10.0.0.326.

Is there any way I can get max speed at 450 mbps on wireless connection?

I am basically 20-25 meters away from the router as well!

Thanks!

Here for my settings on router! Thanks

To confirm where the bottlenecks are, the DIR-822 router is 2x2 MIMO, which at 80 MHz width on 5 GHz would have a Phy rate of 867 Mbps and at 40 MHz on 2.4 GHz would have a Phy rate of 300 Mbps.

The 3x3 MIMO TL-WDN4800 card can't do 5 GHz, so you can forget about 867 Mbps Phy rates. And since your DIR-822 can handle only 2 spatial streams at 300 Mbps, the two devices can't negotiate 3 spatial streams at 450 Mbps. 300 Mbps is the max.

And needless to say, you won't ever see higher Internet speeds over wifi than what you pay your ISP for, which is 15 Mbps. You could achieve higher speeds over your local area network, though.

But as for the Phy rates, the manufacturers advertise those but they have nothing to do with reality. You'll never actually attain 300 Mbps throughput even if your ISP plan was for 300 Mbps, because of wifi's collision avoidance overhead. At a 50% duty cycle and 4 millisecond TDMA transmit window (average values), the 300 Mbps Phy rate would translate into actual throughput of 120 Mbps as an average, and a total possible range of 52.5-202.5 Mbps. And naturally, that would be higher if you had a card that could support 2x2 MIMO at 5 GHz. 20-25 meters away, your modulation would fall from 64-QAM 5/6 to 16-QAM 1/2 or lower, so 48 Mbps would be an excellent result for actual throughput given that huge distance.