Processor keeps over heating

  rasalom 23:25 22 Jul 2005

I have a AMD athlon xp 2400+ processor running on a ECS L7VTA motherboard and i'm finding that, over a period of 9 months, the processor is getting hotter and hotter.
The heatsink and fan are correctly rated for the processor and have in fact been renewed in case this was the problem.
When I take the heatsink and fan off the processor I find that the heatsink compound has 'evaporated' and when I apply new, fresh compound it runs much cooler but over the next 9 months the processor gradually runs hotter and hotter.
Any ideas as to why this is happening?

  Strawballs 00:01 23 Jul 2005

I know this sounds basic but over nine months you can collect a lot of dust, I clean mine out about every 6.

  Belatucadrus 01:03 23 Jul 2005

Don't forget that the heat sink compound is only to fill surface irregularities and not form a layer between the metal surfaces, so after 9 months there shouldn't be much to see as the excess will have squeezed out.
However most cpu fans only come with cheap silicon paste, you may find some improvement with a good compound like Ceramique click here don't let the mickey mouse price fool you, it really is a good compound, gets better results in some surveys than the trendy silver compounds.

  Stuartli 09:13 23 Jul 2005

Don't forget too that air temperatures are much higher generally.

During the recent hot weather my PentiumIII would reach 121 degrees F (well within limits) - this morning is cool and cloudy and it's reading 86 degrees F (30 degrees C).

You should be able to set a maximum temperature in the Bios that the CPU can reach before shutting down - I have mine set one step below the 80 degrees C limit of the CPU purely for safety in case of fan failure.

  freaky 10:29 23 Jul 2005

You could consider buying a CPU Fan that runs at a higher RPM than your existing one, suggest you visit the coolmaster site to suss out the options. I know ebuyer sell coolmaster fans as I bought one from them 2 weeks ago for £7 including heatsink.

  Stuartli 12:17 23 Jul 2005

Do you also have a front case fan?

It's also worth checking that the air flow through the case is at maximum by, if necessary, carefully arranging IDE cables etc to minimise potential blockages.

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