The nodes are so-called AC1300-routers. They offer 867 Mbps at 5 GHz via 802.11ac and 450 Mbps at 2.4 GHz at 802.11n. Both 2.4 and 5 GHz can be used for the link between the nodes; of course the latter is faster. The main difference with the Linksys and Netgear systems is that TP-Link does not use separate radios to organize the backbone. This is a lot less expensive for TP-Link. Downside to this is that it limits the amount of available bandwidth for the clients.
As with the other systems the Deco cannot be opened easily. In terms of SoC TP-Link chose the Qualcomm IPQ4019, a quad-core processor operating at 600 MHz. On the motherboard we also find a separate circuit board with the Bluetooth-adapter that is only used during the installation.
The most remarkable aspect of the Deco might just be the usb-c connector: it is the first time that we find this connector on a router. It offers TP-Link the possibility to use powerline as backbone in the future. Especially considering the lack of separate radios for the wireless backbone this is not an unnecessary luxury in our opinion.