- AMD Ryzen 1700x
- ASRock Fatal1ty X370 Professional gaming
- 16GB DDR4 3200mhz G.Skill Flare X
- Samsung 850 Pro 512GB SATA 6Gb/s OS Drive, Windows 10 Pro
- Seagate FireCuda 2TB SSHD SATA 6Gb/s Secondary Game install drive
- Samsung Spinpoint F3 1000GB SATA 3Gb/s Backup Storage drive
After testing my own system here for the last hour or two. I've seen the following things, using the benchmark you used.
The SSD seems to be performing properly according to the benchmark. My HDD and SSHD on the other hand appear to be showing poor sequential read/write performance. And lackluster 4k performance on the HDD, and 4k read performance on the SSHD..
Now on the other hand... Actual real world file transfer performance, I tested using a 2GB MP4 file, moving and copying it between drives.
Moving from the SATA3 SSHD to the SATA2 HDD = 211MB/s, 206MB/s from HDD to SSHD. Which seems to be contradicting the benchmark results for the 2 drives by a fair amount. It's most likely just the benchmark not playing nice with the current drivers for the chipset. I'd suggest testing moving a few large files around on your computer to see if the actual performance is matching with what the benchmark is saying.
Moving between the SSD and SSHD transfers too fast to take a snapshot of, due to the SSHD's 8GB of NAND Flash memory.