[Solved] AMD Navi 7nm for eGPU - Radeon RX 5700 & RX 5700 XT  

@ray Nano cards are rare finds and they hold value. I bought a white ASUS R9 Nano brand new off eBay a few months prior to buying the PowerColor Vega Nano. The price difference was only $40.

I have not heard anything about an ITX/Nano version for Navi family. Like you said it may take another year before one is available. On top of that driver support is not the best for newly launched GPUs in both macOS and Windows.

@itsage Thanks for the confirmation! Though I must admit, I’m disappointed to hear this. Nvidia is doing fantastic with their ITX cards, and they’re readily available and competitively priced. It just seems like something AMD is missing out on.

In the US, Micro Center holds an AMD Ryzen and Navi launch event this morning. I’m standing in line at my local store. This is surreal because I don’t recall the last time a computer-related launch received this much hype.

One can find the Techpowerup review here: 

5700XT: https://www.techpowerup.com/review/amd-radeon-rx-5700-xt/
5700: https://www.techpowerup.com/review/amd-radeon-rx-5700/

Will update this post when other reviews drop down.
Dunno what is the real retail price and the cards availability tho, did not checked.

Edit : Eurogamer 5700 review: https://www.eurogamer.net/articles/digitalfoundry-2019-amd-radeon-rx-5700-rx-5700-xt-review-head-to-head-with-nvidia-super
         Anandtech 5700 review: https://www.anandtech.com/show/14618/the-amd-radeon-rx-5700-xt-rx-5700-review  
        Phoronix linux 5700 review: https://www.phoronix.com/scan.php?page=article&item=radeon-5700-linuxgl&num=1

$349 for RX 5700, $399 for RX 5700 XT, and $449 for 50th Edition.

As informed in the OP, there's no drivers for Navi as of 10.15 Beta 3 [19A501i].

Just checked at online french stores, 400e for the 5700, 450e for the 5700xt, at the moment of writing this post.
I found one retailer tho going for 369e for the 5700 and 421e for the 5700xt.
It's a bit pricey considering what one really get at the end, when purchased at launch. 

Not impressed at all on overall by this launch, luckily Ryzen 3k save the day a bit .
Time will tell, as usual with AMD products.

Radeon drivers 19.7.1 released today have eGPU support in Windows. The RX 5700 performance so far is between RX Vega 56 & 64. It is running cooler and quieter than Vega cards (reference blower style cooler).

Here are some early testing numbers in Boot Camp Windows 10 1903 on a 2016 15" MacBook Pro. It's done through internal display mode.

The Razer Core is able to both charge my 15" MacBook Pro and power the RX 5700 just fine. It's been running for two hours and no shut-off issues.

@ itsage

The power consumption dropped drastically with the 7nm process, compared to 14nm vega cards.
The power consumption is now more or less equal to the nvidia 12nm turing cards.

However with a decent cooling system the card would run even cooler and be almost inaudible.

Edit: Dunno but the reviews seems to complain a lot about the immortal AMD blower design, especially on heavy sustained loads.
It seems also the drivers are pretty nasty, i would say as usual, unfortunately.
In few words, it's a bit a mess here, there and there at launch.

Anandtech highlights that compute performance is currently slow or broken because of the new RDNA architecture. Drivers aren't prime time yet.

Same here. I got the RX5700 XT today and the Mac OS 10.14.5 is not recognizing the card. 

Also as a side note, how do I insert images into the reply? I would like to show my setup, as well as Geekbench score.