Hi SDH, thanks for letting me know.
Looking at the 2 benchmarks MrBike posted I see that the Intel performs a lot better than the traditional ssd from Samsung. Therefor I will continue my search for a fast PCI-e ssd. Benchmarks show that the Samsung SM951 and 950 Pro are a lot faster than the Z Turbo Drive (first edition) and a lot cheaper. They both can be installed with the help of an adapter card, (Addonics ADM2PX4). The question now is; AHCI or NVMe?
What would be the best choice for a HP Z820?