Axt1800, total memory is 393MiB, should be 512MiB


just got my new axt1800 and trying to understand it.

the good news, getting great speedtest results over my symmetrical 1Gbps fiber optic connection.

the axt1800 is advertised as
Memory /Storage DDR3L 512MB / NAND Flash 128MB

but i seeing much less total RAM, just 393MiB
please help me understand, thanks,

free -mt
              total        used        free      shared  buff/cache   available
Mem:         402312      130600      204068        2340       67644      223676
Swap:             0           0           0

cat /proc/meminfo
MemTotal:         402312 kB
MemFree:          204068 kB
MemAvailable:     223676 kB
Buffers:           14784 kB
Cached:            44408 kB
SwapCached:            0 kB

Because the total memory size allocated to the linux system is 430M, the rest of the memory is allocated to the Wi-Fi subsystem or other boot areas.
In addition, the linux system itself consumes a certain amount of memory to load and run. The part isn’t show in free command.


thanks, very interesting.

that layout image, is for my router, axt1800?

yes, it is for AXT1800.