adata sx8200 pro

I’ve just built my first PC and have been running some tests to check everything is working as it should be. All seems good apart from my my 512GB ADATA XPG SX200 Pro NVMe drive, which is running at nealy half the advertised speed (and perhps 60% compared to real life benchmarks)...

Background: I currently own an Intel 660p 2TB in my main rig (see signature below). I'm currently dating someone whose build is almost 100% on a 1TB HDD and I was planning to purchase a 2TB SSD to upgrade her. Then it occurred to me that the ADATA / XPG SX8200 Pro is TLC, versus the Intel...