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CPU Overheating - Abit AS8 w/Pentium 4

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October 27, 2004 3:52:09 PM

Archived from groups: alt.comp.hardware.pc-homebuilt (More info?)

Help, my CPU is running hot. Just assembled an Abit AS8 motherboard
with a Pentium 4 530 LGA 775 (3.0GHZ) with Intel's included heatsink
and fan. Initial Abit EQ readings after boot up were:

CPU temp = 82c
System Temp = 24c
CPU Fan = 2460 RPM

Heatsink feels slightly warm to the touch, but definitely not hot.
The computer unexpectedly shutdown a few times when the temp ran into
the upper 80's. (However, Win 2000 automatically began saving
settings before it powered down, so I'm not sure if this was a result
of overheating.)

The CPU was idling at approx. 60c in idle Windows environment. The
heatsink fasteners appear to be engaged correctly, but it's difficult
to be sure since the board flexes so much as they're pushed in. After
pushing some more and aligning heat sink screws perpendicular to the
heat sink, the CPU temp now idles at approx 50c, about 63c immediately
after bootup.

My tower only has one fan, so I left the top off for the time being.

How can I get the temperature down to normal? Also, Intel says that
the pre-applied thermal interface material(TIM) on the heatsink must
be replaced if the heatsink is removed? Will that be difficult
considering how hot the processor's been running? Can Arctic Slver be
used in conjunction with the TIM?

Any help would be greatly appreciated.
Also, any recommendations on a good tower for this setup?

Thanks.


System:
Win2000 Pro(SP4)
Bios(from POST): 4/8/2004 I865PE-w83627-6A79AA1MC-10
ATI 9200SE 128MB AGP Card
300W Seasonic Power Supply
Tower has just one fan, but I've kept the top off and ambient temp
seems ok, right?
120GB Serial ATA MaxtorHD
Anonymous
a b B Homebuilt system
a b à CPUs
October 28, 2004 7:08:44 AM

Archived from groups: alt.comp.hardware.pc-homebuilt (More info?)

k wrote:
> Help, my CPU is running hot. Just assembled an Abit AS8 motherboard
> with a Pentium 4 530 LGA 775 (3.0GHZ) with Intel's included heatsink
> and fan. Initial Abit EQ readings after boot up were:
>
> CPU temp = 82c
> System Temp = 24c
> CPU Fan = 2460 RPM
>
> Heatsink feels slightly warm to the touch, but definitely not hot.

It's not touching the CPU properly. Either that, or you left the clear
protective tape on the thermal pad.

>
> The computer unexpectedly shutdown a few times when the temp ran into
> the upper 80's. (However, Win 2000 automatically began saving
> settings before it powered down, so I'm not sure if this was a result
> of overheating.)

Too hot, as you've already figured out.

>
> The CPU was idling at approx. 60c in idle Windows environment. The
> heatsink fasteners appear to be engaged correctly, but it's difficult
> to be sure since the board flexes so much as they're pushed in. After
> pushing some more and aligning heat sink screws perpendicular to the
> heat sink, the CPU temp now idles at approx 50c, about 63c immediately
> after bootup.

Still a bit warm. Did you remove the clear plastic tape from the thermal
interface pad before installing the heat sink?

>
> My tower only has one fan, so I left the top off for the time being.
>

Where and in what direction is it blowing?

> How can I get the temperature down to normal?

Getting the heat sink properly installed is a good first step.

> Also, Intel says that
> the pre-applied thermal interface material(TIM) on the heatsink must
> be replaced if the heatsink is removed?

That's a statement you've made, not a question.

> Will that be difficult
> considering how hot the processor's been running?

No. Scrape it off with the edge of an old plastic library card (or
whatever card) or similar and polish it up with a bit of isopropyl
alcohol or acetone. Search this group's archives on google for a lot of
advice and procedures on this topic.

> Can Arctic Slver be
> used in conjunction with the TIM?

Now. Scrape it off and start clean with the arctic silver.

>
> Any help would be greatly appreciated.
> Also, any recommendations on a good tower for this setup?
>
> Thanks.
>
>
> System:
> Win2000 Pro(SP4)
> Bios(from POST): 4/8/2004 I865PE-w83627-6A79AA1MC-10
> ATI 9200SE 128MB AGP Card
> 300W Seasonic Power Supply
> Tower has just one fan, but I've kept the top off and ambient temp
> seems ok, right?
> 120GB Serial ATA MaxtorHD


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