Re: [gentoo-user] Mobo, CPU, memory and a m.2 thingy. This work together?

[Michael <confabulate@kintzios.com>]

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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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