What are the most vunerable parts of the motherboard relating to heat ?

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Skybuck Flying

I am starting to wonder:

1. What are the most vunerable parts of the motherboard relating to heat ?

I see cpu chips survive 100 degrees celcius... I see gpu chips survive 90
degrees celcius.

However it seems the motherboard dies easily after 1 year of running at 55
degrees or so during summer time.

Why is it that the motherboard can't handle higher temperatures ?

Which components on the motherboard are most likely to fail first because of
heat ?

2. Would it be possible for motherboard manufacturer's to make more
heat-reliable motherboards ?

Or is there some kind of problem ?

Maybe it's not the motherboard manufacturers problem ?

Maybe the people who make the little thingies have their heads in their
butts and are making crappy shit.

Please make better shit :)

Bye,
Skybuck.
 
Skybuck said:
I am starting to wonder:

1. What are the most vunerable parts of the motherboard relating to heat ?

Bye,
Skybuck.
Click to expand...
Probably electrolytic caps - they are usually the first to fail; heat
causes them to dry out.

Voltage regs with poor heatsinks will often be next.

Some North Bridge chips also run hot and are not always fitted with
heatsinks/fans.
2. Would it be possible for motherboard manufacturer's to make more
heat-reliable motherboards ?
Click to expand...

Yes...

It's demand v cost.

I guess there is 'limited demand' for this; although anyone who has
served in Iraq, trying to get IT kit to work without air-con can see a
demand.... ;-)

There are also many industries (oil + gas, surveying + exploration,
nautical etc.) who would benefit from 'ruggedised' PCs.

Domestic /commercial PCs expect to operate within 'reasonable' temp
limits - it's specified in the manual.


Guy
 
I am starting to wonder:

1. What are the most vunerable parts of the motherboard relating to heat ?

I see cpu chips survive 100 degrees celcius... I see gpu chips survive 90
degrees celcius.

However it seems the motherboard dies easily after 1 year of running at 55
degrees or so during summer time.
Click to expand...

The CPU chip was running at 20+80=100C it is now running at
55+80=135C. This may be the failure.
Why is it that the motherboard can't handle higher temperatures ?

Which components on the motherboard are most likely to fail first becauseof
heat ?
Click to expand...

Long term high temperature makes the Lithium go bad.

2. Would it be possible for motherboard manufacturer's to make more
heat-reliable motherboards ?
Click to expand...

Yes but it costs either money or performance. High temperature
components are usually more expensive.

You can cut the power in the CPU by dropping its clock rate in half.

You can use parts that are over rated for the application and add heat
pipes etc.

Most PC mother boards are intended to be suspended in the air. If you
instead made the PCB such that in mounted pressed down onto an
aluminum heat sink and had fluorinert pumped over its top surface, you
could greatly reduce the operating temperature rise.
 
55 degrees was the temperature of the motherboard.. outside it was at most
25.5 degrees celcius or so.

Bye,
Skybuck.
 
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