by John 'twosheds' McDonald » Tue Mar 26, 2019 3:58 pm
As far as my understanding goes...and I am happy to be corrected...
If connected via a PCI channel then the M.2 drive should be faster. If the M.2 drive is connected via a SATA channel then the M.2 and SSD drive speeds should be broadly similar.
In my system I have two M.2 SSDs (C:/ and D:/) connected via PCI channels. My general "rule of thumb" is to use my D:/ drive for all 'WIP' files and the C:/ drive for programs, swapfile space, etc.
As an aside when I was using ImgBurn recently to write DVD files to my D:/ M.2 drive before burning to optical media the write speed to the M.2 drive that I was seeing was incredible!
AMD Ryzen 3900x 12C/24T, ASUS x570 mobo, Arctic Liquid Freezer ll 280, Win11 64 bit, 64GB RAM, Radeon RX 570 graphics, Samsung 500GB NVMe 980 PRO (C:), Samsung 970 Evo SSD (D:), Dell U2717D Monitor, Synology DS412+ 8TB NAS, Adobe CS6.