in the last month i sent PowerColor a bunch of messages regarding the H2D bandwidth problem. i now got an answer that a firmware update should fix this and sent me this version:
https://drive.google.com/file/d/0B7hbOakYlkYCakJRLVJib0tQTHM/view
i'm not at home for the next couple of days, so i cant test it. so if anyone is curious go ahead and try it! i'm looking forward to hear your experiences 
MacBook Pro 15" 2017, AMD RP560
Devil Box + MSI GTX 1080Ti Gaming X
Bricked thanks to rEFInd:
MacBook Pro 15" Late 2013, GT 750M
2017 15" MacBook Pro (RP560) [7th,4C,H] + GTX 1080 Ti @ 32Gbps-TB3 (PowerColor Devil Box) + macOS 10.13.3 & Win10 [build link]
Can a TI83-based Powercolor Devil Box owner please confirm this firmware gives full TB3 bandwidth by capturing CUDA-Z/AIDA64 screencaps before and after doing the firmware update? Full 32Gbps-TB3 bandwidth H2D values are shown at:
https://egpu.io/external-gpu-implementations-table/#perf
If this firmware fixes the H2D issue, then a US$300AR TI83-based Devil Box is comparatively great value for an enclosure with I/O ports. Do note this is physically (by volume) the largest TB3 enclosure we have listed at:
https://egpu.io/external-gpu-buyers-guide-2017/
eGPU Setup 1.35 • eGPU Port Bandwidth Reference Table
2015 15" Dell Precision 7510 (Q M1000M) [6th,4C,H] + GTX 1080 Ti @32Gbps-M2 (ADT-Link R43SG) + Win10 1803 [build link]
Can a TI83-based Powercolor Devil Box owner please confirm this firmware gives full TB3 bandwidth by capturing CUDA-Z/AIDA64 screencaps before and after doing the firmware update? Full 32Gbps-TB3 bandwidth H2D values are shown at:
https://egpu.io/external-gpu-implementations-table/#perf
If this firmware fixes the H2D issue, then a US$300AR TI83-based Devil Box is comparatively great value for an enclosure with I/O ports. Do note this is physically (by volume) the largest TB3 enclosure we have listed at:
I get an error when i try unfortunately.
Also, for the record you can remove most of the outer case so its smaller
What PC are you using and do you know that you have a ti83 controller?
MacBook Pro 15" 2017, AMD RP560
Devil Box + MSI GTX 1080Ti Gaming X
Bricked thanks to rEFInd:
MacBook Pro 15" Late 2013, GT 750M
2017 15" MacBook Pro (RP560) [7th,4C,H] + GTX 1080 Ti @ 32Gbps-TB3 (PowerColor Devil Box) + macOS 10.13.3 & Win10 [build link]
New 8th gen intel HP Spectre x360. No idea which controller is being used - is there a way to find out with software or do I need to open it and look at the board?
good news: i just tried the firmware update and it works. it also fixes the h2d bandwidth problem as promised by powercolor
@troywright: i dont know how to figure that out, i just knew i have the ti83 because of incompatibility with macbooks in the beginning. usually the date of purchase can give you a good idea which version you have. if its newer than half a year it should be the ti83. but you can search for other topics issuing the devil box, i remember there was a way to determine which controller you have.
MacBook Pro 15" 2017, AMD RP560
Devil Box + MSI GTX 1080Ti Gaming X
Bricked thanks to rEFInd:
MacBook Pro 15" Late 2013, GT 750M
2017 15" MacBook Pro (RP560) [7th,4C,H] + GTX 1080 Ti @ 32Gbps-TB3 (PowerColor Devil Box) + macOS 10.13.3 & Win10 [build link]
New 8th gen intel HP Spectre x360. No idea which controller is being used - is there a way to find out with software or do I need to open it and look at the board?
TI82 works fine with Windows. macOS is the picky one and will show "Unsupported". You should be able to flash the firmware regardless of the TI82/TI83 controller. Which Intel Thunderbolt Software version are you running?
• external graphics card builds
• best laptops for external GPU
• eGPU enclosure buyer's guide
2013 Mac Pro (FP D500 x2) [3rd,12C,E] + RX 5700 XT @ 16Gbps-TB2>TB3 (Mantiz Saturn Pro) + macOS 11 [build link]
New 8th gen intel HP Spectre x360. No idea which controller is being used - is there a way to find out with software or do I need to open it and look at the board?
TI82 works fine with Windows. macOS is the picky one and will show "Unsupported". You should be able to flash the firmware regardless of the TI82/TI83 controller. Which Intel Thunderbolt Software version are you running?
NVM20. I wonder if it's the laptop having problems. I'll try again today.
I tried as well with my old XPS15 and I also get the same message. Must have a dud...
Two things to try next. First option is to remove the GPU from the enclosure prior to flashing the firmware. The second option is to install Intel Thunderbolt Software version 16.2.55.275.
• external graphics card builds
• best laptops for external GPU
• eGPU enclosure buyer's guide
2013 Mac Pro (FP D500 x2) [3rd,12C,E] + RX 5700 XT @ 16Gbps-TB2>TB3 (Mantiz Saturn Pro) + macOS 11 [build link]