High idle temps on Supermicro A1SRi-2758F
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There is nothing to prevent you from putting a fan on your "fanless" rig if you are not happy with the temperatures.
Or dropping in a bigger heatsink.
Max thermal design on those is 97C.
How does it do under a load? If you max the processor how hot does it get?
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That does seem a bit high unless ambient is around 90-100F. I'd probably stick a fan in there.
For reference, I've got a c2558 in a supermicro case with 2 fans and I'm only hitting around 34c max. And it's at the top of one of my closets. No air vents or anything. Inside ambient temps in my house will get up to around 76-80F.
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Yep, it does look high. Are you sure those numbers are correct? How are you reading them?
Compared to this review using an 80W load they are certainly high:
http://uk.hardware.info/reviews/3850/15/12-mini-itx-chassis-review-compact-quality-test-results-cooling-performance
Can you measure the power draw of your box?Steve
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I'd put in a small quiet case fan and a small quiet fan on the cpu. Also make sure the box can breath. Not put in a closed space.
To test if this will help, open the case, point a small house fan into the case.
If the temps drop to normal, you need fans.
If the temps don't change to normal, maybe your thermal paste was applied badly - read temps from bios also.
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Compared to this review using an 80W load they are certainly high:
http://uk.hardware.info/reviews/3850/15/12-mini-itx-chassis-review-compact-quality-test-results-cooling-performanceHigh load but that's actively cooled, which should make a huge difference.
From the same review: "Without fan this chassis gets the hottest of them all, more than 48 degrees, so you probably shouldn't put a CPU in there that gets really warm."
In the system of this topic there's also a hot disk heating the board up from behind.
If the system is placed on a shelf or desk, one could try to get it higher up from the shelf/desk to improve bottom-top airflow. It won't help much though and the next step would be fans.
A fan, even from the outside without opening the case of my passively cooled D2700MUD in a Morex T3460 (no disk) almost instantly lowers the temp with 10 degrees down from a steady 50-52 C (in 17 C ambient).
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Then you need fans. 2 of them would be nice.
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@P3R:
High load but that's actively cooled, which should make a huge difference.
I thought that at first but I don't think it is. It's the passive version they're testing. The listed temperature, 48.5C, doesn't change between the tested fan speeds and there's no figure given for the fan noise. Both those lead me to believe this is fanless.
Steve
Edit: Re-reading the test setup it doesn't seem like the numbers are relevant here whether there are fans are not. These are not cpu temperatures.
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Update:
Puting the case on the side and mounting a house fan next to it lowered the temps (CPU now at around 40 C).
Up next: stresstest -
Glad to hear it. Since a fan is necessary and you will have to do the periodic cleaning anyway, I suggest mount a cpu fan.
http://www.servethehome.com/wp-content/uploads/2013/10/Supermicro-A1SAi-2750F-Rear-IO-Panel.jpg
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Your ambient temp outside the case may be under 28c, but inside the case, it claims to be 52c(system temp). Your CPU temp is not much above the in-case temp.
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Hm… none of the bootable cd live distros seem to work (kernel panic).
Is there a way to stress test my machine without installing the entire system?
Another thing I will try now is to move the HD outside of the case, as it is directly under the cpu - adding to the heat.
Installing fans is my last resort (silence is key here) -
You can't run linux mint or ubuntu live without a kernel panic?
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Sorry. Upon re-reading my post I realized what I said :)
I can boot ubuntu just fine, was talking about Ultimate Boot CD, Hirens Boot cd, StressLinux (OS boots, but cpu test tools produce kernel panic/stop the system)
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Load ubuntu or mint - execute prime95 in stress test mode.
That should get things nice and warm for you.
P.S. This will also freeze / kernel panic if things overheat or board/memory has problems.
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Update:
Strapped a big 140m Noctua fan on the case (this thing is super silent).
Now idle temps around 30C, load temps around 50C :)Another problem arose: Noctua fans have very low RPM, causing the IPMI to report alarm/warning and flash a red LED on the board.
Is there a way to configure alarm thresholds for supermicro boards? -
Changed fan thresholds with IPMItools. Now no warning is displayed but red LED is constantly flashing on the MB…
