How Hot can a Celeron 800Mhz go

How Hot can a Celeron 800Mhz go? I am planning to make a booksize PC but I need to know how hot is a Celeron before getting one....

Will a Celeron 800Mhz allow me to use a booksize PC case?
2 factors
1, will it burn if i put it into a booksize PC case
2, will the fan not fit

below is my configuration plan
Celron800 FCPGA (100)
Asus Cusl2-m
Micron PC133-128
Western digital WD200AB (20GB 5400)
NEC 52x CDROM

And what is the diffrence between Flex ATX n Micro ATX

Hi *Tio Etomac*,
Intel say's 80 degree C, but for me is better to stay around 60-65C Max if not OCed, for more info take a look to this link http://support.intel.com/support/processors/sspec/icp.htm

I hope it helps you

About the cooling section, take a look to the Alpha's website http://www.alphanovatech.com/ for the taller Pal15U