RX5700XT not better than RX580 on trashcan mac pro 2013  

So I bought the new RX5700 XT card with the Sonnet eGFX Breakaway Box 650 (GPU-650WOC-TB3)  to give it a try on my trashcan Mac Pro 2013 and here's the verdict:

I was using eGPU from OWC 550W with a Radeon RX580 on a maxed out cpu/memory trashcan mac pro 2013. It did not offer significant improvements prior to Catalina, but after I updated, wow, what a difference. I thought now it would be a good time to upgrade the video card to get better performance, but was I wrong indeed, as it began dropping frames compared to my old RX580 built. One thing it did better though is rendering time on Premiere Pro, it was significantly faster, but other than that, even the rendered footage showed dropped frames during playback. I tried full resolution playback on 4K files recorded on a GH5 high bit rate 4.2.2 to see how far it could go, and still the RX580 did an excellent job with zero dropped frames. 

Good thing my return window is still good so after this failed experiment I will be returning both the RX5700 XT card and the Sonnet eGPU. Funny to mention both the OWC and the Sonnet eGPU are practically identical, the only thing that changes is the front.

Enclosure Photos:

https://ibb.co/1GrLKpv

https://ibb.co/bgvzhv6

Funny too OWC keeps saying their eGPUs are not compatible with thunderbolt 2 when it works like a charm with purge wrangler script:  https://github.com/mayankk2308/purge-wrangler  

AMD RX5700 XT may work better on native thunderbolt 3 macs but if you're thinking about updating your cheap old RX580 don't even bother, with Catalina it works great.