On Sunday, 16 June 2024 09:40:57 BST you wrote: > On Sunday, 16 June 2024 05:55:45 BST Dale wrote: > > William Kenworthy wrote: > > > On 16/6/24 07:07, Mark Knecht wrote: > > >> <SNIP> > > >> > > >> > I still don't understand the efi thing. I'm booted up tho. I'm > > >> > > >> happy. > > >> > > >> > Now to get temp sensors and stuff to work. I want to keep a eye on > > >> > temps for a bit. I think the boot media was reporting the wrong > > >> > info. > > >> > Even the ambient temp was to high for this cool room. It showed like > > >> > 100F or something when my A/C is set to 68F or so. Plus, the side is > > >> > off the case at times. New battle. ;-) > > The side panel should help improve air flow through the case (depending on > the design). I've seen CPU temperatures on big tower servers with dual > xeon CPUs going up when the side panel was removed. > > > >> > Dale > > >> > > >> <SNIP> > > >> > > >> Hi Dale, > > >> > > >> Congrats on getting your new machine working. I think you've > > >> received > > >> > > >> a lot of good info on temperature effects but there is one thing I > > >> didn't > > >> see anyone talking about so I'll mention it here. (Note - my career was > > >> chip design in Silicon Valley so I'm speaking from experience in both > > >> chips and PCs that use them. > > >> > > >> First, don't worry too much about high temperatures hurting your > > >> > > >> processor or the chips in the system. They can stand up to 70C > > >> pretty much forever and 100C for long periods of time. Long before > > >> anything would get damaged at the chip level, if it ever gets damaged, > > >> you are going to have timing problems that would either cause the > > >> system to crash, corrupt data, or both, so temps are important > > >> but it won't be damage to the processor. (Assuming it's a good > > >> chip that meets all specs and is well tested which I'm sure yours > > >> is. > > >> > > >> The thing I think you should be aware of is that long-term high > > >> > > >> temps, while they don't hurt the processor, can very possibly degrade > > >> the thermal paste that is between your processor or M.2 chips > > >> and their heat sinks & fans. Thermal paste can and will degrade > > >> of time and high temps make it degrade faster so the temps you > > >> see today may not be the same as what you see 2 or 3 years from > > >> now. > > It used to be the case the thermal paste would dry out and needed replacing > within 5 years or so. These days the top end thermal paste lasts longer and > it is much more expensive, but I'm yet to find out how long it lasts. ;-) > > >> Now, the fun part. I wrote you a little Python program which on > > [snip ...] > > > My complaint, the temps sensors is reporting is way higher than my IR > > thermometer says. Even what I think is the ambient temp is way off. > > I've googled and others report the same thing. During one compile, I > > pointed the IR sensor right at the base of the CPU cooler. It may not > > be as hot as the CPU is but it is closer than anything else. I measured > > like 80F or something > > That's approximating the TCase, but you're still not close enough to measure > that temperature. You'd need to delid the CPU for this ... definitely NOT > recommended. > > > while sensors was reporting above 140F or so. > > That's the TjMax and for your 5800X CPU this is comfortably within the TjMax > temperature of 194°F (90°C): > > https://www.amd.com/en/products/processors/desktops/ryzen/5000-series/amd-ry > zen-7-5800x.html#product-specs > > I > > can see a little difference but not that much. Besides, for the wattage > > the CPU uses, the cooler I have is waaaaaay overkill. I think my cooler > > is rated well above 200 watts. The CPU is around 100 watts, 105 I think > > or maybe 95. > > 105W - see link above. > > > Plus, this room is fairly cold. A/C currently set to > > 68F. One can dispute the CPU temp I guess but not the ambient temp. If > > one is off, I suspect both are off. > > Not necessarily - where is the ambient temperature sensor located? > > > Oh, the CPU fan isn't spinning fast > > either. I'd guess it isn't even running at half speed even when > > compiling and htop shows all cores/threads at the max. > > Your UEFI (BIOS) menu should have settings for tweaking the fans and > changing their cooling profile to make them quieter, or spin them up > sooner. Start with default settings and tune it up/down from there to > match your needs.
Take a look at the CPU Thermal Expectations in this article: https://www.pcgamer.com/amd-views-ryzen-5000-cpu-temperatures-up-to-95c-as-typical-and-by-design/
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