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CPU overheating? or BIOS retarded?

post #1 of 11
Thread Starter 
i recently frankensteined a computer for a friend, i took a CPU and mobo from a sony vaio VGC rc110g which is a pentium D 830 @ 3.0. I put on a stock intel LGA775 socket CPU cooler and used my Noctua NH h1 thermal paste (about the size of a small pea) and then firmly placed on the CPU. When the comp it boots (after restarting for 2-5 mins), it tells me the CPU temp is not in range, and i went into the BIOS and it said the CPU was running at high 70's Celsius.

Now am i retarded or are the bios reading the temp incorrectly.
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post #2 of 11
Quote:
Originally Posted by inchy97 View Post

i recently frankensteined a computer for a friend, i took a CPU and mobo from a sony vaio VGC rc110g which is a pentium D 830 @ 3.0. I put on a stock intel LGA775 socket CPU cooler and used my Noctua NH h1 thermal paste (about the size of a small pea) and then firmly placed on the CPU. When the comp it boots (after restarting for 2-5 mins), it tells me the CPU temp is not in range, and i went into the BIOS and it said the CPU was running at high 70's Celsius.
Now am i retarded or are the bios reading the temp incorrectly.

It could very well be overheating

Do you have the original heatsink to put back on and test?

It could be a contact issue between the cpu and the socket775 heatsink
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post #3 of 11
How about you take off the cooler and see if the paste is spread? this will tell you if there is enough contact. We can't exactly answer the question for you - Either you have not enough contact on the CPU, or you're correct that your bios readings are off. You will need to check and see.
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post #4 of 11
There are several different stock 775 coolers, which on is on this Pentium D? The Pentium D 830 stock cooler is fairly large and has a large copper slug in the center.

Also, push-pins can be tricky for some. It's imperative that the heatsink is mounted correctly.
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post #5 of 11
im almost 100% certain the cpu sensor on a laptop is not inside the cpu its actually i think in the heatsink. reason being is i did the same thing but turn my laptop into a tablet by follwing instructables.com instructions when i did so i use some off market cpu cooling heatsink the processor was definatly cool because after runing it for a while i would feel the heatsing like 3-5 cm away from the processor and it wasnt bad at all i even put a sensor on it and it never went above 55 but when i checked the bios it was locked at 70 72 celcius i think thats the bios default setting or mobile processor heat sensors are bad.

i also had a pentium d but cant remember what exactly version hope this helped
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post #6 of 11
Thread Starter 
ok i am almost 100% certain it is the CPU temp reader that is incorrect,

i cannot use the original CPU heatsink for the CPU that Sony provided, because it is in a new case that will not fit/correctly screw into the case.

I am using the stock normal LGA 775 socket heatsink from intel to cool it and the reader still shows 75-77oC

I took off the heatsink and checked to make sure i had a good spread of TiM, and i had an excellent contact, so i wiped it off and applied the same amount as before. and rebooted and still am having CPU temps 75-77.

So it seems to me that the CPU temp reader is off
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post #7 of 11
Thread Starter 
can anyone confirm this? or at least give me hope i am correct
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post #8 of 11
Are you reading the temps from the BIOS or within the OS? That is a huge factor to considering when building or assembling a fresh rig. Most people tend to forget that majority of the time the BIOS are way off compared to the OS, CPU is not really at idle during BIOS therefore you get the temp increase. I would say, be pretty sure that you have taken the necessary steps and have thoroughly checked the cooler and the contact and then continue onto installing an OS and seeing what coretemp / realtemp has to say.

As mentioned if you're confident that you have tried everything at the best of your ability, continue with installing the OS. thumb.gif
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post #9 of 11
if you read what i put above it has to do with the laptops heatsink some have the sensor in there and thats where the bios reads from instead of the processors because most of the time the processors temps are off by alot on laptops
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post #10 of 11
I think pics of this setup are needed.
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