At home, the company has 5G WiFi, but the notebook is still using the ordinary 2.4G network card, in order to experience 5G, must be upgraded!
Prepare to upgrade the notebook: a mother usually playing aqer 1551 qq mahjong (already replaced 1830T motherboard / U), a company's office of God ship K480N-i5 D4;
1551 original network card is AR5B97 (AR9287), support 802.11 B/G/N, online theory is 300M network card (personally seriously doubted );
K480N original network card is AR5B125 (AR9485), supports 802.11 B/G/N, Taobao display is 150M ;
Taobao bought two 5G wireless card upgrades, all tested on the K480N
RTL8821AE 433M 2.4G/5G Dual Band AC Wireless LAN Card +4.0 Bluetooth(Â¥28)
Intel 7260 HMW AC Wireless LAN Card 876M (without Bluetooth)(Â¥79)
test environment:Computer : K480 i5 8G 240G solid state 645M graphics card should not affect the wireless test,
Routing : H3C EWP-WA4320i-ACN wireless routing, the nearest routing distance 10M, suspended in the air, and no obstacles between the notebook;
Bandwidth : 300M line, the company 6 floors, floors are at least 50M, do not know the distribution rules, in the non-office hours at noon test;
System: win10, log on China Telecom Network Speed ​​Website for speed measurement
Task Manager - Performance Display Connection Mode is 802.11n ,
The Wlan status shows that the connection speed is 54Mbps .
Download average speed 966KB/s , upload average speed 423KB/s , say good 300M?
Task Manager - Performance Display Connection Mode is 802.11n ,
The Wlan status shows that the connection speed is 72.2Mbps .
Download average speed 3150KB/s , upload speed 2739KB/s , speed is not bad...
Task Manager - Performance shows that the connection mode is 802.11n . Although the purchased link shows AC, it does not support 5G of the AC protocol.
The Wlan state display connection speed is 72.0Mbps , which is 0.2Mbps less than AR5B125 (ar9485).
Download the average speed 6997KB/s , upload the average speed 1793KB/s , the download speed has reached 50M, and pretty good...
Task Manager - Performance shows the connection mode is 802.11ac ,
The Wlan status shows that the connection speed is 173.3 Mbps.
Download the average speed of 6618KB/s , upload an average speed of 10718KB/s , download speed has also reached 50M, upload close to 100M
2.4G wireless communication is now more and more congested, 5G routing has become more and more popular, but the network card has to keep up, ah, mobile phone replacement faster, almost 2 years of mobile phones generally support 5G, notebook replacement Slightly slower, the older generation does not support more 5G, and the upgrade cost is not high. The ordinary 8821E with Bluetooth also brings about a significant increase in network experience.
In addition, 802.11ac is working at 5G frequency, but working at 5G is not necessarily 802.11ac. It can also be 802.11a or 802.11n, such as 8821e, which can have a good network experience.