Duron 1 ghz - Max temp ?

Whats the max temperature I should allow a duron to work at, I am trying to get it as low as possible.

There is a case fan + CPU fan, and quite a large heatsink. and it went all the way to 48 degrees (not even booted).

I think thats way too hot, I got this box from my friend's old office, they had it there without use.

Duron 1 ghz - Max temp ? Duron 1 ghz - Max temp ?

 

 

 

 

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