09-30-2019 01:53 PM
Welcome to the Community Forums.
Do you have a specific part number (ex. 01AX768 - Wireless,CMB,IN,9560 NV M2) for the Lenovo Wireless 2x2 ac?
Similar to this post, difference between the two is the Multiple Radio Chains (2x2AC) offering number of transmit and receive radio chains. As example, the speed of the cars may be the same but 2x2 offers 2 roads so if there would be any network traffic on one road then the other resolves lagging as it provide alternate path.
I hope this helps answer your query or anything else that interest you.
09-30-2019 09:32 PM - edited 09-30-2019 09:35 PM
I didn't know that because it only shows between 2 options like picture attached.
So, maybe someone who use Lenovo Wireless 2x2AC option can share the performance of it.
Becuase i found that Intel Wireless-AC 9462 1x1AC has max speed at 433 Mbps and 2x2 seems to have higher bandwidth.
10-01-2019 11:24 AM
81SXCTO1WWTH is CTO or custom to order (from major resellers) so parts may not be as specific if ordered from Lenovo. Using model 81SX for legion y540 15irh shows available WLAN cards as shown from parts lookup:
NFA435A QCA9377 (1×1)
Peak Speed: 433 Mbps BT ver 5
Intel® Wireless-AC 9560 (2x2)
Max speed 1.73Gbps BT ver 5
Intel® Wireless-AC 9462 (1×1)
Max speed 433 Mbps BT ver 5
Max speed 433 MBPS speed BT 4.2
This appears that PN 01AX768 Intel® Wireless-AC 9560 is the only one that has 2x2 TX/RX Streams with bluetooth version 5 and Max speed 1.73Gbps BT ver 5.