Another update (final). Dell have confirmed that you cannot fit a heatsink to the NVMe Gen4 SSD in the 7000 Micro. So fitting a Samsung 980PRO or WD SN850 which both run ultra hot when under load - video encoding in my case kills the idea stone dead. I'll look for another probably larger system.
Looking to buy a 7090 or 7000 Optiplex MIcro and fitting a NVMe Gen4 SSD. Can anyone advise whether either of these two machines run the Gen4 at Gen4 speeds or is throttling involved. I ask as I have a 2in1 9365 XPS which suffers with throttling with a Gen3 NVMe. Never ever got to the reason but of course it could have been a heat issue. Anyway, little point in paying serious money for a Gen4 NVMe if it's only going to operate at Gen3 speed. So any input/advice would be appreciated.
Optiflex Micro 7090 or 7000 NVMe speed(s)