Groups > alt.comp.os.windows-11 > #18464

Re: memory usage vs fan usage

From	Andy Burns <usenet@andyburns.uk>
Newsgroups	alt.comp.os.windows-11
Subject	Re: memory usage vs fan usage
Date	2025-04-17 19:40 +0100
Message-ID	<m6d098Fcl4lU1@mid.individual.net> (permalink)
References	<m6cgr0Fa4thU1@mid.individual.net> <d3rztgut6pgy.dlg@v.nguard.lh>

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VanguardLH wrote:

> I've never had a box setup where there were thermal sensors and fans on
> the memory modules themselves.  

I have had memory fans (and they were noisy overkill), not had separate 
temp sensors, but DIMMs can have them on-board, this laptop has 
soldered-on memory,so probably no sensors, but somehow memory usage is 
feeding into fan usage, once it starts there's quite a lag until it 
stops again.

> At most, I've had heat spreaders on the
> memory modules.  The thermal sensors were in the CPU, GPU, PSU, and mobo
> that affected changes in fan speeds.  RAM is not a large contributor to
> the heat inside the case the fans are to exchange or expel.  Even
> spinners generate more heat (when used, of course).

The bottom case is a bit of a pain to take off, or I'd use the thermal 
camera on it, but I think I managed to snap one clip off the case last 
time, so would rather not risk another one just for that.

> If more RAM is being allocated for non-suspended processes then the more
> activity the CPU sees

but CPU can be practically idle (sub 5%)

> and it generates more heat.  Some processes
> generate lots of CPU heat, like when using Prime95 to burn in a new
> build.  More RAM allows more frames/sec in games, so more heat at the
> GPU, and probably the CPU, too.  While games may use some page space,
> most will preload their textures and objects into memory to up their
> performance.  Overclocking also generates more heat from everything
> since supposedly you overclock to up speed.  As part of overclocking,
> often you have to up the voltage when upping the clock speed, and more
> voltage means more power consumed, so more heat.

Maybe, can't keep my eye on 9 temp sensors and my ears on the fans, 
while doing stuff.  I wish fan speed was available in HWmonitor, tehn a 
graph of fans vs temperatures could be drawn, at the moment my best gut 
feel is fans come n when CPU package > 50°C for several seconds and go 
off when it's been under 40° for just a couple of seconds, but it's 
probably more complex than that.  Also in general I feel BIOS revs over 
the years tend to make fans more likely to be on with each rev.

> Use a temperature monitor to look at the temp sensors available in your
> setup. 

HWmonitor sees CPU package/CPU cores/GPU and SSD temperatures, but not 
memory.

> When the fans speed up, look at where was the rise in temps.
> That will let you see temperature change for a component (CPU, GPU,
> etc), but not cause by process.  You could also monitor CPU usage on
> processes to see which are highest when the fans come on.
> 
> As far as the memory modules go, yes, the more accesses the more heat.
> If accessed, the RAM isn't idle.

Yes,  I sort of know that ...

Thread

memory usage vs fan usage Andy Burns <usenet@andyburns.uk> - 2025-04-17 15:16 +0100
  Re: memory usage vs fan usage Paul <nospam@needed.invalid> - 2025-04-17 12:09 -0400
    Re: memory usage vs fan usage Andy Burns <usenet@andyburns.uk> - 2025-04-17 19:57 +0100
      Re: memory usage vs fan usage Paul <nospam@needed.invalid> - 2025-04-18 03:15 -0400
  Re: memory usage vs fan usage VanguardLH <V@nguard.LH> - 2025-04-17 11:59 -0500
    Re: memory usage vs fan usage Andy Burns <usenet@andyburns.uk> - 2025-04-17 19:40 +0100
      Re: memory usage vs fan usage Frank Slootweg <this@ddress.is.invalid> - 2025-04-19 12:04 +0000
        Re: memory usage vs fan usage Andy Burns <usenet@andyburns.uk> - 2025-04-19 13:36 +0100
          Re: memory usage vs fan usage Paul <nospam@needed.invalid> - 2025-04-19 09:25 -0400
          Re: memory usage vs fan usage Frank Slootweg <this@ddress.is.invalid> - 2025-04-19 14:54 +0000
            Re: memory usage vs fan usage Andy Burns <usenet@andyburns.uk> - 2025-04-19 16:16 +0100
            Re: memory usage vs fan usage Andy Burns <usenet@andyburns.uk> - 2025-04-24 08:17 +0100
              Re: memory usage vs fan usage VanguardLH <V@nguard.LH> - 2025-04-24 05:14 -0500
                Re: memory usage vs fan usage Andy Burns <usenet@andyburns.uk> - 2025-04-24 11:30 +0100
                Re: memory usage vs fan usage Paul <nospam@needed.invalid> - 2025-04-24 09:08 -0400
                Re: memory usage vs fan usage VanguardLH <V@nguard.LH> - 2025-04-24 20:59 -0500
                Re: memory usage vs fan usage Andy Burns <usenet@andyburns.uk> - 2025-04-25 07:40 +0100
                Re: memory usage vs fan usage Andy Burns <usenet@andyburns.uk> - 2025-04-25 19:13 +0100
                Re: memory usage vs fan usage VanguardLH <V@nguard.LH> - 2025-04-25 22:29 -0500
                Re: memory usage vs fan usage Andy Burns <usenet@andyburns.uk> - 2025-04-26 10:31 +0100
                Re: memory usage vs fan usage VanguardLH <V@nguard.LH> - 2025-04-26 15:05 -0500
        Re: memory usage vs fan usage "Carlos E.R." <robin_listas@es.invalid> - 2025-04-19 14:36 +0200
          Re: memory usage vs fan usage Andy Burns <usenet@andyburns.uk> - 2025-04-19 13:56 +0100
          Re: memory usage vs fan usage Paul <nospam@needed.invalid> - 2025-04-19 09:28 -0400
  Re: memory usage vs fan usage VanguardLH <V@nguard.LH> - 2025-04-17 15:07 -0500
    Re: memory usage vs fan usage "Carlos E.R." <robin_listas@es.invalid> - 2025-04-17 22:25 +0200
      Re: memory usage vs fan usage VanguardLH <V@nguard.LH> - 2025-04-17 19:30 -0500
        Re: memory usage vs fan usage "Carlos E.R." <robin_listas@es.invalid> - 2025-04-18 14:09 +0200
          Re: memory usage vs fan usage VanguardLH <V@nguard.LH> - 2025-04-18 11:13 -0500
            Re: memory usage vs fan usage "Carlos E.R." <robin_listas@es.invalid> - 2025-04-18 21:33 +0200
    Re: memory usage vs fan usage Andy Burns <usenet@andyburns.uk> - 2025-04-17 22:12 +0100
      Re: memory usage vs fan usage VanguardLH <V@nguard.LH> - 2025-04-17 20:07 -0500
      Re: memory usage vs fan usage Paul <nospam@needed.invalid> - 2025-04-18 05:24 -0400
        Re: memory usage vs fan usage Andy Burns <usenet@andyburns.uk> - 2025-04-18 12:08 +0100
          Re: memory usage vs fan usage Frank Slootweg <this@ddress.is.invalid> - 2025-04-18 18:09 +0000
            Re: memory usage vs fan usage Andy Burns <usenet@andyburns.uk> - 2025-04-18 19:36 +0100
  Re: memory usage vs fan usage "Carlos E.R." <robin_listas@es.invalid> - 2025-04-17 22:29 +0200
    Re: memory usage vs fan usage Andy Burns <usenet@andyburns.uk> - 2025-04-17 22:17 +0100
      Re: memory usage vs fan usage "Carlos E.R." <robin_listas@es.invalid> - 2025-04-18 02:19 +0200
      Re: memory usage vs fan usage Paul <nospam@needed.invalid> - 2025-04-18 05:52 -0400

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