I've got this problem with my CPU overheating for quite a while now, and I wanted to see if anybody could help me out, i would really appreciate it.

Problem: CPU temperature readings on both Asus PC Probe and Motherboard monitor 5 to be at 50+ Celsius at Idle and 80+ Celsius when loaded.

Specs:
Processor Intel Pentium 4 640, 3.2 GHz, 2MB L2, 800 MHz FSB, Socket LGA775, HT Technology

Current CPU fan/heatsing: Stock with stock thermal paste

Motherboard: Asus P5GDC Deluxe Intel 915P Chipset for Socket T

Ram: OCZ 2GB (2x1024MB) DDR2

Power: Thermaltake Silent Purepower 480W

Videocard: ATI Radeon X800XL 256MB 256Bit GDDR3

Casing: Antec Super LanBoy

I already have one fan in the front of the case pulling air in, two fans (including the PSU fan) at the back pulling air out, and one side fan pulling air out too. I really don't know the reason why my CPU temp readings are so high. Please, if anyone has any adivice or suggestions, i would truly appreciate it. Thank you VERY much!!

With stock fan/heatsink..for me it just normal.Mine temperature reading is same as yours, before i change to thermaltake copper heatsink with fan + artic silver5 thermal paste.After that my temperature drop about 25+ Celsius.
OR Maybe
1.your heatsink didn't attach well with cpu.
2.fan problem.
3.heatsink covered with dusk.
4.not enough thermal paste.

hope this info help u.

Cheers.

I'd say clean out your pc and add a much better fan that is in there already. not to ffond of stock intel heatsinks. I have a pentium D 930 and I wasn't happy with the stock fan and how my temps were higher then I liekd them to be so I went out and got a nice fan for 30 bucks on newegg and now the temp has dropped by 30c.

AMD Athlon 64 X2 4400+ OC 2.7ghz
2GB Dual Channel DDR 3200
Nvidia 7800GT
SATA II 2x 200gig 7200rpm 16mb cache RAID-0
Gigabyte Nforce 4 SLI

The side fan should be blowing in, not out....

The P4 Prescott is known as the "hot potato" & it's common for it to run hot. Are you having heat related problems, or are you just concerned because about the temps? You should verify your readings in the BIOS...don't rely on software. If they're all in agreement, fine...if not, go with the BIOS reading. What BIOS version are you running? I believe the latest is version 1011 & there are also a couple of Beta BIOS available. Temp reading errors are usually corrected in a BIOS update.

If all that checks out, double check the HSF installation or look into a possible upgrade like the others suggested

BTW, is it overheating or running hot? There's a difference....

He already ask this question once before and I show him the link to the tomshardware.com where the Pentium 560 having thermal problems with stock hsf and thermalpaste...

TMP-Man

Asus P5P800-SE
P4 506 @ 4100Mhz 1.525v
Thermaltake CLP0024 w/ 2000RPM FAN + AS5
1GB Corsair 2-3-3-5 DDR400
40GB 5400RPM/120GB 7200RPM HD
Radoen 9500 mod 9700 @ 375/600 CHS+RHS

Thanks for all the helpful tips and suggestions, i really do appreciate it. To respond to jam's comments, I tried checking the temperature from the BIOS and it was even worst, it read about 61 celsius, and I already updated to the latest BIOS version. And I think my CPU is just running hot, and not overheating, since my computer isn't restarting or freezing because of the hot temperature.
I have another little question I was curious about. When I was looking through some other forums about this problem, some said the solution to this would be to change my case to a Thermally Advantaged Chassis, where there's a side air duct on the case. And some said that the solution is to change to a better heatsink and add some Arctic Silver 5. I'm just wondering which way would be better??

Personally, I'd just change the side fan around so that it blows in, remove the HSF, clean it, & apply a fresh layer of paste. And I'd go by what the BIOS is reporting for temps.

Thanks for the advice. I just changed the side fan so that it's blowing air in now, and i removed the HSF and cleaned it thoroughly, and applied a fresh layer of Arctic Silver 5. Now I'm getting a reading of 44 C at idle and 67 C loaded. Is that temperature ok?? Or is it still a little high??

That's a heck of an improvement...look at the numbers you posted before and after.

Large temp swings are common to Intel P4's between idle and full load and loaded 70°C'ish temps are certainly nothing to worry about.

Skip

I'd say you got it straightened around & should have no worries. Nice work ;-)