Since the new M1 (and the upcoming M1X) chips are blazingly fast, but don't support Windows 10 via Bootcamp anymore... has anybody seriously tried to use Parallels Desktop 16 as a bootcamp replacement with an eGPU so far?
From what they advertise it should be running just fine: https://www.parallels.com/products/desktop/
For example, how do stability and performance with a Radeon 5700 XT compare between native bootcamp and Parallels Desktop 16 in macOS?
Late 2016 15" MBP w/ Radeon Pro 460, 2m CalDigit TB3 cable, Mantiz Venus eGPU case, NVidia GTX 1080ti.
Probably not many people. It would take Apple adding eGPU support to the M1 architecture to motivate most.
2018 Mac Mini + AMD RX 6600 XT (Sonnet Breakaway Box 650) Monterey 12.1 pending + Windows 21H1
2018 Mac Mini [8th,6C,B] + RX 6600 XT @ 32Gbps-TB3 (Sonnet Breakaway 650) + macOS 12.0 & Win10 21H1 [build link]
Parallels for M1 with W10 ARM is only in tech preview as far as I am concerned, and there is no eGPU support.
Has something changed recently?
|| Mac mini 2018, i7, 32GB || macOS 10.15.7 || Bootcamp W10 20H2 || Sonnet Puck RX 5700 eGPU ||
Indeed, there's not eGPU support on M1 Macs, also read that in the meanwhile. Still hope it will be added soon.
And for Intel-based Macs there is eGPU support, but there still is bootcamp as well... So that pretty much concludes this thread already. 
Late 2016 15" MBP w/ Radeon Pro 460, 2m CalDigit TB3 cable, Mantiz Venus eGPU case, NVidia GTX 1080ti.
Virtualization will never ever be a native OS replacement with current technologies. Don't bother questioning or asking this in foreseeable the future, it will never happen. Maybe 20 years from now or something crazy like that, but we're nowhere near that point.
2020 16" MBP w/ dGPU
Nvidia GTX 1070
Akitio Node
32" LG 32UD99-W at 4k
macOS Big Sur, Bootcamp Windows 10
2015 15" MacBook Pro (R9 M370X) [4th,4C,H] + GTX 1070 @ 16Gbps-TB2>TB3 (AKiTiO Node) + Win10 // PERST# delay use may apply to other MacBooks [build link]