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What is a dangerous tempature for a P4?

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January 5, 2004 6:21:25 AM

I have been reading the boards and have not seen a good breakdown on what tempatures begin to become dangerous to a CPU. Everyone agrees that 65C and above is bad news.. and 40C is fine. But what about in between? Is 50C ok? 55C?

I have a 2.8c and I can clock it to 3.2GHz but it hits 57C with Prim95 in full heat test mode, and drops to 25C at idle. For now I am dropping it back to normal, but would like to know.. whats a safe speed to boost it to? (Room temp is about 18C)

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January 5, 2004 6:29:27 AM

Pentagram4 CPUs are good to go till... well I don't think you have to worry about that. The midi-chlorians within these things are smart enough to know how to feel heat you see. So, after much heavy operations, with the core heating up by so much, it will "throttle" the speed back down.

The midi-chlorians sortof eat each other when it's too hot, then there's not so many of them to produce enough heat (they're constantly mating, so they're always hot).

If your temperatures doubles to 100%, then you're all good, cuz then you have healthy & supple midi-chlorians, good for constant mating.

-----
Hope for the future.
Reflect on the past.
But focus on the present you mofo.
January 5, 2004 11:19:29 AM

Increase but as much as 10%

2800 * .10 = 280
2800 + 280 = 3080 Mhz

So that it won't go very hot.

Try also a much better HSF solution.

<b>MY PC SPECS</b>
Intel P4 2.0GHz | 256MB PC2100 DDR SDRAM | Nvidia GeForceFX 5200 64MB | Integrated Audio | Asus P4S333 SiS645 | Seagate 40GB 7.2KRPM HDD | WIN98SE
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January 5, 2004 11:21:46 AM

Quote:

But what about in between? Is 50C ok? 55C?


I think 50C is bad for a long period of time.
Just stay below 50C ASAP.

<b>MY PC SPECS</b>
Intel P4 2.0GHz | 256MB PC2100 DDR SDRAM | Nvidia GeForceFX 5200 64MB | Integrated Audio | Asus P4S333 SiS645 | Seagate 40GB 7.2KRPM HDD | WIN98SE
January 5, 2004 5:58:32 PM

Since you haven't given the S spec number of your cpu I can't give you the exact thermal specification for your cpu.
The lowest thermal specification for a P4 2.8C is 72C. This rating is the highest possible core temperature where reliable operation is guaranteed. If you go above 72C the cpu's thermal protection may begin to lower internal clock speed to reduce the core temperature.
Depending on your S spec number the thermal specification for your cpu could be 72C, 73C or 75C.
Don't worry if you overheat your P4. They have built in protection to prevent internal destruction. Running your P4 for extended periods of time at high temperatures +60C may shorten the life of the cpu and other components. But do you think you will be using this system five or more years from now?

<font color=red><i>Doctor Hooter</i></font color=red> <A HREF="http://www.page3.com/" target="_new"><b>(·Y·)</b></A>
January 6, 2004 1:37:54 PM

If the computer lasts three years, thats plenty. Dying in 3 months, thats more what I am worried about. Yes, it's the stock heatsink.. I plan to get something better.

Not sure what the S spec number is. It's a Northwood P4 2.80C. CPU-Z reports F,2,9,0,0,D1.

How can you tell if the CPU enables the thermal protection? I don't plan on running it anywhere near 72C, but do wonder how and if it can be detected.

Thanks!
January 7, 2004 11:30:09 AM

When a P4 overheats the internal clock speed is reduced. You will notice when processes take longer to execute.
Ex. video encoding frame rate decreases when the clock speed is cut.

<font color=red><i>Doctor Hooter</i></font color=red> <A HREF="http://www.page3.com/" target="_new"><b>(·Y·)</b></A>
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