I understand that the Netgear Nighthawk X4S AC2600 is a good midrange router for OpenWRT
However, there seems to be different documentation and support for these two models.
Model D7800 https://openwrt.org/toh/netgear/netgear_d7800
Model R7800 https://openwrt.org/toh/netgear/r7800
The D7800 has the ADSL but not supported by OpenWrt anyway, the pictures of D7800 make it look like a poor relation but listings on ebay have them looking similar.
Is there a preferred model from the two above or any tech reason?
I noticed the Broken NAND Chips/Blocks issue on the R7800 but the fix does not look too onerous.
If the ADSL was supported on the D7800 then it might be worth considering for future use.
D7800 has a weaker CPU as well from memory
a) chances for the xDSL modem to be supported in the future are near null.
b) older SOC (ipq8064 vs ipq8065), running at lower clock frequencies (2*1.4 GHz vs 2*1.7 GHz)
c) older wireless chipset (QCA9980 vs QCA9984)
d) half the RAM (256 MB vs 512 MB)
THANKS I did not notice the Ram, I need to put them side by side
Cust to clarify, the D7800 actually has 512MB of RAM, see this thread: Netgear D7800 memory not all available
Choose the r7800 if you can, because the community support is bigger as this device has more ‚active‘ developers and users.
And the only feature (vdsl modem) which really makes a difference is not supported by openwrt.
(From a d7800 user which has long experience with this device)