You replaced the motherboard.
Did you seperate the heat sink from the CPU direing the process ???

If yes, then you should clean off the Thermal Paste, and re-place it.

Whewn you remove the heat sink, then re-place it, air bubbles get between the CPU and the heat sink. Air bubbles are insulators, and stop heat from moving from the CPU into the Fan.

Thermal paste is very cheap, about £0.5 at my local computer shop.

Remove the heat sink, clean the old thermal greece off with a tissue and a tiny ammount of solvent.

use your finger in a pllastic bag to spread new thermal paste over the metal heat sink as THINLY as possable.. the less you use the better.

Then place a small blob of paste into the middle of the CPU.
about a half the size of a pea.

Push the heat sink down onto the cpu firmly.

This will ensure that no air bubbles come between the CPU and heat sink.

With high quality thermal paste, and stock cooling, my Amd64 3400+ with cool 'n' quiel enabled runs at 32 degrees idle, 45 degrees under high load.

Guys - take it from an experienced AMD user - I'd brought this up earlier on too but simply got flamed... Whatever people say, AMD Processors generate an immense amount of heat - way more than it's intel counterparts. At one point of time I was a die-hard AMD fan, but after 6 burnt cores down the line I switched over to Intel and have lived happily ever after. This doesn't mean AMD's are bad in any way - just suffers from an extremely hot head

All my intel boards have a cool temperature (3 system zones - CPU, near Fan 1 and near Fan 2) + fan speed monitoring utility - where you can set autoshutdown thresholds to prevent core burns. I keep checking the temperature there quite frequently. Even in the extreme tropical summers of thailand - with just a pedestal fan running in the room, the core temperature never exceeds 52C - which I consider amazing. Now that the temperature has gone down with approaching winter, my core temp never goes beyond 45-48max. As for the other Zones - 1 & 2 - the temps are happily kept below 35C.

Also one factor which I always stress on - if you are into heavy usage and want your system to serve you for long stretches as well as have a long life, go for big bulky tower cabinets with plenty of room inside and the boards/devided all well spread out. This helps a tonne in dissipating the heat - as against the compact and fancy cabinets. Also increase the number of fans, if you MB/Cabinet supports it. My present system has 3 fans, excluding the one on the CPU. At least can't say my baby's hot headed

wow... thats confusing.

my Athlon64 3400+ with stock cooling, and a unde-volted case fan, new thermal paste, and cool n quiet enabled runs at 28 - 32 degrees idle.

45 degrees flat out.

I can put my hand into the hase, onto the hea sink, and feel no heat.

However, i do Live in England, And its raining right now
so ambiant tempreture is low.

However, i have only used AMD-Thunderbird, AMD Athlon-XP and AMD Athlon64.
And Intels Pentium3.

Maybe its some strange voodoo, who knows.



I dont know why i had to reply.
Maybe its just web-forum psychology.

If someone posted about the sky beeing blue, i would probably feel obliged to inform them that in my experiance, the sky is usually grey, dull, and full of rain.

What predictable creatures we are

hehe.. come right over to the tropical climate and claim all that.. to us, the sky's never been blue-er