CPU/DRAM option on mainboard

Well guys I was going through my mainboard manual and I found out this interesting page about the bios. I usually don't mess around with the bios cause I am scared of it. But I just have a few simple questions that I hope one of you have the answers to..

Ok first, for CPU type I got a Intel P4 but I got a Celeron Running on it.
Then it has CPU/DRAM Speed at 100/100 Mhz. Now I could change the CPU/DRAM option to the following speeds 133Mhz and 166Mhz. Now I was wondering is it safe to boost it up to at least 133mhz or should I live those settings alone....?????

thanks in advance.....
pam...

 

i'd leave it alone.
sometimes when i change to 133 i get no video.
and, you cannot ever hurt the bios.
its an eprom device with permanent memory that does need the onboard battery to operate tho.

 

thankyou for your response....