I've just started mining and have been OC'ing most of my cards using winter air cooling in MI. I can't seem to get the cgminer running for more than 6 hours at a time. I have reset everything to default values and got up to 1 day 5 hrs before one of my Powercolor 7950's went sick....
How long have you guys been able to keep cgminer on for before crashing? Is it common to have to restart the miner every day or hours?
I have 5 7950s on a MSI Z77A GD65.
cgminer is a great program. Just don't use ADL functionality on Windows. Lower your clocks if cards go sick.
Use MSI AB to set clocks and fans. Find a sweet spot E/M ratio. Set clocks for individual cards as they all are different, even if they all are the same model and are from the same manufacturer/batch. Different ASIC quality, different clocks.
I've had systems that run for months without a restart. Usually restarted by power outages or my watchdog. But most rigs run for weeks without a restart.