Spin 3 Laptop - SP315-51 and FIOS Actiontec MI424WR

Brand new laptop and can't get a wireless speed higher than 65 mbps. Atheros Qualcomm QCA9377 wifi card. Should be getting around 300.

Help

 

No, it shouldn't really. QCA9377 is a single stream 802.11ac chip meaning it can achieve theoretical connection speed of 433mbps (that is connection speed indicated by Windows, not the actual throughput) when paired with a router that supports 802.11ac standard.

Yours does not -Actiontec MI424WR supports 802.11n and the theoretical max connection speed for it is 300mbps, however that is achieved with two spatial streams and your card supports one spatial stream.

So this card connected to this router will not show more than 150mbps connection speed (if the channel width is 40MHz) or half of that id the channel width is 20MHz.

You did not indicate if 65mbps is the actual speed achieved in speedtest or one indicated by Windows though.

I moved the thread to networking sub-forum.

 

Can you tell me where to change the channel width to 40MHZ?

 

That setting has to be changed on the router - somewhere within wireless settings you should be able to choose between 20MHz, 40MHz and/or "auto".
If you only have 20MHz or auto, you are out of luck though. You would have to try and change the channel to a free and if possible non-overlapping one - and that might be hard on 2.4GHz band.

 

Pretty sure even 65 Mbps I think he means link rate not actual throughput. OP, 65 Mbps is the max link rate at "Long Guard Interval", real world throughput would be like around 70-75% of at that most (due to overhead, distance and various causes of interference) assuming low interference and close distance. Setting Short Guard Interval in the router's WiFi settings will give you a minor bump up to 72 Mbps link rate.

Though theoretically you would double to 144 Mbps at 40 Mhz w/Short Guard Interval, do note that there are only 3 non overlapping channels on 2.4 Ghz (1,6,11) with 40 Mhz you take up 2 whole non overlapping channels increasing interference with your neighbors and leading to greater instability and possibly shorter range. Basically unless you live in a rural setting keep it a 20Mhz.