system
A chat on subreddit /r/pcmasterrace
human
if you don't have any SSDs in your system, go do yourself a favor and buy one for, at the very least, to be your system drive. The gap between a HDD and a nvme drive is like 50x the read/write speed.
gpt
If anything, latency is more important and especially random access is the reason that SSDs are so much faster than HHDs for boot drives.