Finally bought Qualcomm’s WIFi6 wireless card: QCA6391 m2 interface, a breath but also bite the bullet to buy three, than AX200 much more expensive, no way, this is not a market retail products, is the sample price, it is only OEM, OMB, ODM channels, probably such a meaning!
The three NICs are as follows.
QCA6391 (M.2 2230, Key E) and AX200 (M.2 2230, Key A) are placed together.
QCA6391 also want to take apart to see if there is an external independent amplifier chip, but do not give up ah. AX200 wireless network card is known to have no independent amplifier. From its RF power parameters are as follows.
15dBm, certainly lower than the wireless router are. Wireless network card also want to compare power with the wireless router?
Long ago bought some adapter cards, connected are Key E, compatible with Key A, so whether it is AX200 or QCA6391 may be plugged into use. Also prepared a bunch of full height and half height baffle, can be installed in different specifications of the chassis.
ITX cases will be directly with this adapter board, the following figure on the left.
And the need to use these wires to facilitate the connection of the antenna:
Desktop antenna, because the size of the host chassis is too large, in the back baffle directly connected to the antenna, will affect the quality of reception, so all my desktop antenna will use the ASUS PCE-AC88 extension cable:
These very extension cords with antenna sockets, I personally think it works very well, so I will buy them back when I see them hanging out for sale, the most expensive set of 125 yuan. Because of the love, so more expensive also happy to pay this money, as QCA6391, because of the love and demand. ASUS this set of antennas can make each computer connected to the wireless network card reception quality to maintain consistency and reduce test data errors. Especially when testing MU-MIMO and multiple receiving devices concurrently.
Putting a QCA6391 on top of the motherboard I3-5010U.
The other one is installed inside this MATX half-height chassis, the three pictured below, and two more are AX200 and QCA6174A respectively. fortunately, QCA6174A can co-exist with QCA6391.
The third one is mounted on another ATX case, so I won’t take a picture. After installing the driver, it shows Qualcomm QCA639x Wi-Fi 6 Dual Band Simultaneous.
Now take out two I3-5010U, one with AX200, one with QCA6391, connect the router XDR3230 in C and D points respectively to test the speed to see. XDR3230 is mediatek chip, fair enough.
QCA6391 does not support 160MHz bandwidth, so the maximum rate is only 1.2Gbps, Xiaomi 10 series WIFi module is also used QCA6391, so it also only supports 80MHz bandwidth. I bought the QCA6391 to test the concurrent performance of the MU-MIMO and wireless router. Now this speed test is just to see if the signal will be better than AX200.
Because the XDR3230 also does not support 160MHz bandwidth. Because the maximum rate of these two wireless cards is the same. Fair! I only test 5G, not 2.4G speed.
Each position is measured six times continuously, and finally the average value is taken for comparison, and the rightmost is the average value. The results are shown in the following table.
Downstream speed, AX200 is finished, upstream speed, QCA6391 is worse.
Why did you buy 3 of them? And not 1 or 2? Because the MU-MIMO test is effective, you will want to see if three also have the effect or efficiency will be reduced by how much, if the three also support, add an additional Xiaomi 10 into the same chip, four will not also have MU-MIMO effect.