I ended up swapping my NVME drive with a regular SATA drive as I needed more space. I measured my project’s build times before and after the swap. Both drives only had UE-related code and data on them. These numbers have to be taken with a proverbial grain of salt. Note that QLC SSDs really suck at ‘writes’ and I think this in part explains the build time differences. I don’t “feel” the difference in day-to-day usage though.
The machine is a Ryzen 3900X at stock clocks with 64GB of Ram (3200MHz, CL14), running Windows 10 2004 and VC++2019. The engine is a customized UE 4.25
DebugGame Editor rebuild only SuperSecretProject
NVME: Samsung SSD 960 EVO 500GB
1>Total time in Parallel executor: 1002.21 seconds
1>Total execution time: 1075.74 seconds
QLC SSD: Samsung SSD 860 QVO 2TB
1>Total time in Parallel executor: 1054.36 seconds
1>Total execution time: 1139.15 seconds
The 960 EVO is now my Windows boot drive. Overall the system feels more reactive compared to the old 850 EVO. Intellisense/Visual Assist DB updates seem to benefit from the faster drive as well.