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krotuss
Apprentice
Joined: 01 Aug 2008
Posts: 239
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 Posted: Sat Sep 28, 2024 6:48 pm Post subject: i5-3320M uneven core temperatures. |
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Hi,
I am observing uneven core temperatures, both at idle and load:
idle ~22°C amb air:
| Code: |
Adapter: ISA adapter
Package id 0: +46.0°C (high = +87.0°C, crit = +105.0°C)
Core 0: +46.0°C (high = +87.0°C, crit = +105.0°C)
Core 1: +40.0°C (high = +87.0°C, crit = +105.0°C)
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load (make -j4) ~22°C amb air:
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coretemp-isa-0000
Adapter: ISA adapter
Package id 0: +65.0°C (high = +87.0°C, crit = +105.0°C)
Core 0: +65.0°C (high = +87.0°C, crit = +105.0°C)
Core 1: +57.0°C (high = +87.0°C, crit = +105.0°C)
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I have just re-pasted my heatsink so I am bit worried if there may be something wrong with that. Unfortunately I don't have reference from before re-paste. Also I find strange that core 1 is lower than the package and core 0 and package are really close together (both at idle and load). I assume that these sensors are directly on silicon so it should not be miss-wired/labeled, or am I wrong? |
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eccerr0r
Watchman
Joined: 01 Jul 2004
Posts: 9824
Location: almost Mile High in the USA
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| Posted: Sat Sep 28, 2024 11:27 pm Post subject: |
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Package temperature is a weighted average of the cores and isn't a real sensor and probably is weighted towards a much hotter core. Core temperatures are on-die.
Most of my cpus the cores are fairly close though it depends on core scheduling (whether you specified processes should be locked to core) and yeah whether your heat spreader/thermal solution is proper. The heat spreader should handle most of the difference but it's possible you have an air bubble near core 0.
That being said, 65°C under load is still in the safe zone. I have two machines run in the 80°C range under load ...
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Intel Core i7 2700K/Radeon R7 250/24GB DDR3/256GB SSD
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