Quote from: in2tactics on Today at 06:47:39 AM

Quote from: PennyBit on August 15, 2024, 12:43:33 PM

Quote from: in2tactics on August 15, 2024, 07:44:48 AM

What is the max safe miner temp for the Apollo II?

As with most of my miners and other computer related circuit boards, my personal experience has shown the upper limits to be an average of 74c. Anything higher and I start seeing erratic behavior including lock-ups and shutdowns. Operating higher than 74c-75c and you run the risk of damaging your equipment or at the very least shortening it's lifespan considerably. My personal preference is to keep everything in the range of 67c-72c with short term spike limits of 73c. This works for me.

I appreciate the input. I understand this works for you, but it doesn't actually tell me the specifics of the PCB max or Chip max temp, which I'd like to know. You must understand that 73 is quite cool for some silicon, such as current AMD processors (95) and most ASICs, and frequently ASICs go much higher than general purpose CPUs.

BITMAIN publishes data for their miners showing PCB max values in a range from 75 to 95, with Chip max values up to 135.
https://support.bitmain.com/hc/en-us/articles/360005088914-Miner-Normal-Operating-Temperature-Range

Agreed, I see what you mean. With the exception of my Apollo II's most of my equipment is older and has seen better days. It very well could be I'm suffering the effects from earlier overheating and causing reduced heat thresholds on the older stuff? Just guessing. In any case, I did start to experience hash board issues such as lock-ups on the A2's at 75.5c - 76c so I've tried to keep'em a little cooler.