Keith C. Perry via plug on 21 Apr 2020 14:32:46 -0700

[Date Prev] [Date Next] [Thread Prev] [Thread Next] [Date Index] [Thread Index]

Re: [PLUG] very large laptop


I take a slightly modified approach to what Chris said- if it is hot enough to burn you, you need supplemental cooling because your laptop is on the way to being too hot.   "Too hot" meaning the CPU is on it's way to the top of it's thermal operating limit.  I'm more concerned with the overall environment of the CPU because even if the fan is good at moving hot air out its entire possible that there is not enough of a thermal delta to prevent the CPU from breaking down at the limits (i.e. the CPU stays "soaked" too long at or over the limit because the surrounding environment is too hot).  Having a cooling plate will help keep the inside temps down so that the CPU or laptop fan is more efficient.


The only laptop that has died on me as a result of poor cooling, was a Dell D600- one of the worse business laptops Dell ever put out if you ask me.  The internal fan was far too weak to cool whatever Intel proc was in there.  I never personally bought another Dell or Intel based laptop after that.  I went to a Gateway with an AMD that ran just as hot but had a monster of a rotary fan.  The air output from that one was probably hotter than the HP DV7, which also was an AMD.  More current Intels like the Xeon you mention are much better running hot but I went to a custom built workstation some years ago and now I really only use laptops when I'm out and 50% of the time I have my Chromebook.  My ASUS Ultrabook, with is all metal body, feels too warm for my lap sometimes but only when I'm really pushing it.  I just put it on the table and I don't use a cooling plate.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Keith C. Perry, MS E.E.
Managing Member, DAO Technologies LLC
(O) +1.215.525.4165 x2033
(M) +1.215.432.5167

From: "Chris Thistlethwaite" <>
To: "fred" <>
Cc: "Keith C. Perry" <>, "Philadelphia Linux User's Group Discussion List" <>
Sent: Tuesday, April 21, 2020 4:50:07 PM
Subject: Re: [PLUG] very large laptop

For laptops I've gone with, if it burns your legs, it's too hot. Though I have had my Windows lappie wake up in my bag and get hot to the touch, but it was still running. I think getting something hot enough to damage itself means that it's hot enough to damage you. Most CPUs I've run crazy hot for extended periods of time were fine and continued to work for many months/years without issue. Pretty much comes down to how much fault tolerance you build into your machines. I've run some Xeon L5640s at 180F, which made my office nice and toasty.


On Tue, Apr 21, 2020 at 4:25 PM Fred Stluka via plug <> wrote:

That sounds REALLY hot.  Got me wondering...

How hot can a laptop get before it's permanently damaged?

I've had the outside case of my MacBook Pro get warm enough
that I wouldn't want it on my lap for long without a lap desk.
Nowhere near hot enough to actually burn me though.
I have no idea how hot it got inside.

I've also left running (sleeping, hopefully) Windows laptops
in sealed neoprene covers inside a backpack in a car sitting
in the sun.  Bad idea?

What's a reasonable max external temp?  Any metrics to offer?

Fred Stluka
Bristle Software, Inc.              #DontBeATrump #SadLittleDonny


On 4/15/20 10:50 AM, Keith C. Perry via plug wrote:
> +10 on this...
> I have an old HP DV7 17" lappie that used to be my primary and when I go pull it out, I'm immediately reminded that this unit really can't operate without a cooling plate.  The one I have in the bag with it and is either broken or I have to make a new power cable but that said, worse case scenario I only use it on a flat surface where I can elevate the back and make sure nothing is near the fan exhaust.
> Just to give you an idea of how hot is gets...  you would NOT even be able to hold your hand 4" away from the exhaust for more than 20 seconds.
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> Keith C. Perry, MS E.E.
> Managing Member, DAO Technologies LLC
> (O) +1.215.525.4165 x2033
> (M) +1.215.432.5167
> ----- Original Message -----
> From: "Fred Stluka via plug" <>
> To: "jeff" <>
> Cc: "Philadelphia Linux User's Group Discussion List" <>
> Sent: Tuesday, April 14, 2020 9:57:12 PM
> Subject: Re: [PLUG] very large laptop
> Jeff,
> Have you considered an inexpensive cooling pad to sit it on?  Like
> a thick mouse pad, but big enough for the entire laptop to sit on.
> Blows air up at the bottom of the laptop.  Worked wonders for an
> old 17-inch HP laptop my wife had years ago.  The laptop was
> built cheap, I think, with no attention to heat.  Had a non-laptop
> CPU or something even.  Always overheated.  The pad solved it.
> Might still be lying around here somewhere, though I suspect its
> long gone.  See:
> -
> --Fred
> ------------------------------------------------------------------------
> Fred Stluka
> Bristle Software, Inc.
>            #DontBeATrump #SadLittleDonny
> #ShakeOffTheTrumpStink
> #MakeAmericaHonorableAgain
> ------------------------------------------------------------------------
> On 4/14/20 7:18 PM, jeff via plug wrote:
>> thanks for the schoolin'
>> On 4/14/20 7:12 PM, Soren Harward wrote:
>>> On Tue, Apr 14, 2020 at 6:35 PM jeff via plug
>>> < <>> wrote:
>>>      So I'm looking for a replacement for a desktop replacement.
>>>      Important parts: 17" display, 16RAM, number pad, backlit kbd
>>> would be
>>>      nice, linux-friendly, under 1k would be great-used is fine
>>> A 17" display with 16GB RAM, but under $1k, pretty much narrows it
>>> down to one of HP's laptops that uses a low-end AMD processor.  You
>>> may be able to find a Dell at that price.
>>> But right now is not the time to be looking for a new laptop. There's
>>> huge demand as companies are expanding their telework, so you'll
>>> likely encounter high prices or long shipping delays.
>>> --
>>> Soren Harward
>> ___________________________________________________________________________
>> Philadelphia Linux Users Group         --
>> Announcements -
>> General Discussion  --
> ___________________________________________________________________________
> Philadelphia Linux Users Group         --
> Announcements -
> General Discussion  --
> ___________________________________________________________________________
> Philadelphia Linux Users Group         --
> Announcements -
> General Discussion  --

Philadelphia Linux Users Group         --
Announcements -
General Discussion  --


Philadelphia Linux Users Group         --
Announcements -
General Discussion  --