![]() ![]() Sensors gives (a few secs of ~6X deg and a few secs of ~8X deg): $ sensors New Cooler Master Hyper D92 Dual fan CPU cooler.Cooler Master Hyper 103 CPU fan (running ~50-100% speed - not 0 as in the graph).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. I told OP that what temperatures are ok and which ones are not, I didnt tell him that he should be getting 64.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. Sure their cooler probably sucks, like the stock cooler, BUT IT IS STILL SAFEĪnything below ~85C is PERFECTLY SAFE for 24/7 use and going above that starts to get more and more dangerous If someone has an i5 at stock speeds and stock voltage and is getting 80C at load, THAT IS SAFE The only thing that affects the temp is the voltage and cooling If the voltages are reasonable, the clocks and temperatures aren't matching at all, especially if that person has a high end cooler that they spent a good bit of money on.Ĭlock speeds dont affect the voltage OR temperature, so idk why you even mentioned that Looks like that temperature is acceptable!" Well, it isn't. Someone inexperienced may come along and look at that statement and say "Oh, my 3570K at 4GHz is at 80C under full load. I'm pointing out what I consider to be a flaw in your reasoning. ![]()
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