Your memory clock is as it should be, as are you rvoltages. Whatever is causing your GPU to crash, it isnt that.
Have you checked temps when it crashes? Other hardware usage stats? (CPU/RAM etc).
My temps are normal, 60C GPU and 45C CPU
my task manager in a lightweight ish game looks like this:https://gyazo.com/a0f445720fac4c0e1ca0d6b145e8822e
For some reason Disk D (disk my games are on) is on 0%
I don't think its my hard drives as i have some games on my C drive and they also crash.