CrystalDiskMark
We're not quite at that 7GB/s Corsair intimates, probably because we use a queue depth of 8 on a single worker/thread. Using the same methodology, the WD Black SN850 is faster for reads. Moving on to writes, the Phison E18//Corsair combo is electric.
Focussing in on 4K performance, Phison doesn't do quite as well as the latest super-fast PCIe 4.0 from WD.