macOS 10.14.3. 128ggb internal ssd. (Mac Mini 2018 i7)
write speed seems low for this internal drive. (possibly cause 128gb model?)
I purchased the new Samsung X5 SSD and it was working great 2k+ speeds but then it got really slow and now it jumps back and forth. I guess it is not compatible with Mac mini 2018 as an external boot device.