If our mining rig crash, is there a way to know why?

[pornluver]

If I overclock my card to 2250 memory sometimes my computer will crash.

Is there a way to know why?

Also the crash rarely happen. Is there a way to make them gracefully restart program instead of crashing?

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[matmator]

Good evening,

If you freeze a memory 2250, try it at 2200.

Example for me, I have 6 rx480 has 2200 but one of it does not support the 2200, I set it at 2150.

[bathrobehero]

Overclocking means that you're runing the card faster than intended to work so it will eventually trip over and crash.

A slight OC might be completely stable and would work for a very long time. A higher OC might crash your card only in a matter of days or even weeks. And high enough OC will crash your cards within minutes or even immediately... You get the idea.

So you have two way of achieving stable running; increasing voltage (not always an option and with other factors can reduce lifespan) or don't overclock that much.