Navi 5700 will be 10%-15% faster than Rtx 2070
Navi 5800 will be 10%-15% faster than Rtx 2080
Navi 5900 will be 10%-15% faster than Rtx 2080ti and the 5900 series will have (7nm+ Arcturus hardware accelerated Ray Tracing) features, and that specific Gpu will launch mid 2020
Navi 5700 will be their entry level Navi mid range Gpu which will beat a 2070 launching this July, and then in 2020 we'll get the 5800 & 5900 Gpu's which will beat the 2080 & 2080ti respectively
The 5700 & 5800 based Pc parts will be standard off the shelf Gpu's without any specific hardware accelerated Ray Tracing features baked in, however the next Gen consoles will get fully custom Navi based Gpu's with the 5900 hardware accelerated 7nm+ Arcturus Ray Tracing features built into the silicon as these next Gen console's will be the real deal Holyfield people.
Xbox Anaconda will use the full custom 5900 Gpu with advanced Ray Tracing Arcturus features....
Ps5 will use a custom 5800 Gpu with advanced Ray Tracing Arcturus Features....
Xbox Lockhart will use a custom 5700 Gpu with advanced Ray Tracing Arcturus Features....
These consoles will perform far higher than the +10% figures of the Pc parts above due to the way consoles work with deep console level optimization, and closed loop ultra low level to the Metal console Api's......
These console versions of Navi will be custom parts which are far more advanced than the Pc parts........
Next Gen console's Xbox Anaconda & Ps5 will absolutely murder the performance of an Rtx 2070 level Pc as Anaconda will be faster than an Rtx 2080ti, and ps5 will be faster than an Rtx 2080, and Xbox Lockhart will be faster than an Rtx 2070