![]() Got a new upgraded CPU cooler - marginal improvement in temperatures. Here's my i7 3820 (a 130W CPU!) for reference with stress -c 8 - it only ever reaches 74deg after a short while. Is it a problem with 'stress' - cycling the loading? and 'psensor' - has high CPU load (40%) on Ubuntu 16.04? Still running hot and temperature cycling. No dome parallel to the direction of the heatpipes or on aluminium part (light shielded to help see).īut across/perpendicular heatpipes a bit of a gap.Īddendum5 - Changed the heatsink - a Double Fan Hyper D92 (checked with a mirror too to see right down at level and at different places): Opened it all up again to take a closer look at the heatsink - a steel ruler and backlight. Psensor indicated temp 3 minutes horizontal scale 1 s resolution (the fan was cycling too): This time 8 processes Note psensor is quite high CPU load on this new i7 6700K compared to 1.2% on my old i7 (speedstep or something?) Removed, cleaned, applied new/more heatsink compound. OK I think that pretty much demonstrates the heatsink wasn't making good contact with the CPU top. I have tried setting the fan thresholds in bios but still see same thing.Īddendum1 - deleted, no problem on other i7.Īddendum2 - pictures of the extracted heatsink and CPU: Or should I be looking at the 'average' temperature which I visually estimate about 75-80deg ? Is this indicative of a problem? - poor heatsink compound connection? Has anyone noticed similar characteristics? Higher time resolution 1s samples, 1 minute across.ĬPU Fan on 100% set in bios not always so neat cycles: stress does load up to 100% but the temp and fans then start cycling a bit. My new build Ubuntu PC seems to have high temperature cycling (and fan speed cycling) when testing using "stress -c 8" - load up 8 threads/cores. It passes Intel Diagnostics (output below some 29-45 degrees below max!) - but still cycles between 62- ~94deg (up to 98) on 100% CPU load. Still a problem after installing new, 2 fan CPU cooler, making sure everything auto in BIOS, not overclocking. or does stress or stress-ng overload the CPU (it doesn't on my older i7-3820)? ![]() Has anyone else seen that on Ubuntu 16.04? ![]() Passes the Intel tests in Windows - but still hot and cycling in Ubuntu running stress or stress-ng. Update: Upgraded BIOS to 1801 - CPU got hotter 70-75degC!!ĭisabling Turbo Mode in BIOS stopped the cycling (BIOS 1702) CPU temp ~65-69degC.Īlready changed the CPU (with upgraded dual fan cooler) and different heatsink compound. ![]()
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