General OpenPOWER Hardware > General Hardware Discussion
2u Blackbird Build with 18 cores?!
tle:
Nice server. Great thanks for sharing your experience with everyone. I think mine is due soon too.
Seems to me your 18-core is the 130W variant CPU.
Regarding the CPU thermal, I think your 2U HSF might not be enough to cool the CPU on full load. I am using the stock Raptor 3U HSF on the 8 core POWER9 (02CY649) and at times the temperature reaches to 80C on full load.
deepblue:
The two 40mm fans strapped to the heat sink are pushing quite a bit of air. There is positive airflow moving into the case with an exit out the lid where I drilled the fan port. Its unlikely for hot air to linger near the heat sink. If this were in a non-ventilated environment, it would heat the space up very quickly.
Is there a definitive test that can determine if there is throttling at high temp loads? I wouldn't know because of how low my temps and actual utilization are.
I am using the model below. It looks like its the 190w variant:
https://en.wikichip.org/wiki/ibm/power/02cy489
MPC7500:
From my experience I can tell, that a 4-core even clock 3.8GHz at 110°C/ 230°F. I don't know if this behavior is normal. But that's it.
ClassicHasClass:
--- Quote ---It looks like its the 190w variant:
--- End quote ---
Yes, 02CY489 is a DD2.2 18-core @190W.
Borley:
That's a familiar looking CPU fan solution ;)
If you ever do push it past 10% CPU usage, I would be interested to see if it doesn't shutdown on Blackbird's power contraints.
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