Supermicro Xeon-D 1521 CPU operating temp

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TDJ211

New Member
May 12, 2015
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I just upgraded mobo on my FreeNAS system from an Avoton C2750 to a Xeon-D 1521 and im noticing through the IPMI that my CPU temps are quite high (102C). The specs do say that it is passively cooled and normal operating temps are (0-108C). I have Noctura fans installed on my Node 304. My Avoton would sometimes get down in the 40ishC range b/w 40-60C in same case with disks.

Is there that big of a diff in CPU? Is this normal or is it a bit too high?

Thanks in advance!
 

geerlingguy

New Member
Nov 10, 2021
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St. Louis, MO
www.jeffgeerling.com
Sorry for the necro on this thread, but I just finished swapping out a little 50mm 6000 rpm fan from my D-1521 heatsink to a 60mm Noctua, and now it's silent, though it does go from about 40°C to 50°C at idle. But it stays well below 100°C under load.

I ran it without a fan for a few minutes (just relying on the slower directional airflow from the case fans), but the thing quickly got up to 100°C, and was extremely hot. Unless you're using 1U 'screamer' fans with the passive heatsink, you need a fan on top of it.
 

redeamon

Active Member
Jun 10, 2018
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You can replace the heatsink with an active air cooled one if you want. Just be extra careful when you remove the old one.
 

geerlingguy

New Member
Nov 10, 2021
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St. Louis, MO
www.jeffgeerling.com
That's the exact heatsink that came with this motherboard; I just didn't like the whiny fan on it, so I popped the fan bracket off, and taped a Noctua 60mm fan to it (wish they made a 50mm), and adjusted the expected fan speeds in ipmi. It's running great, though it would be neat to build one of those solid 3D printed brackets so I wouldn't rely on kapton for many years' use (even though it'll be statically mounted in a rack).
 

redeamon

Active Member
Jun 10, 2018
291
207
43
That's the exact heatsink that came with this motherboard; I just didn't like the whiny fan on it, so I popped the fan bracket off, and taped a Noctua 60mm fan to it (wish they made a 50mm), and adjusted the expected fan speeds in ipmi. It's running great, though it would be neat to build one of those solid 3D printed brackets so I wouldn't rely on kapton for many years' use (even though it'll be statically mounted in a rack).
Mine wasn't too bad, but yeah, using a real fan is ideal. These chips get way too hot for what they are.