Hey guys... I was curious to know how the heatsinks and fans are performing as far as temperature is concerned at stock and overclock speeds. I performed the CFD/Heat-transfer modeling on these to make sure everything was going to function satisfactorily and was interested to know how accurate my model was... I also feel partly responsible for the end product performance as well.
If I recall, my models predicted between 45-50C, assuming perfect contact with the thermal vias and I think the fan at almost full speed. How close was it?
I'm seeing a bit higher. My miners operating in a 22C room hover between 54-59, and my miners operating in a non-climate-controlled ~5-15C room run comfortably between 50-56, mostly on the lower end. All @ 350 MHz with fans at 100%, but currently no auxiliary fans.
I recompiled cgminer's klondike driver to up cutoff temp, so still quite stable and manageable even if they are running slightly warm.