what fsb for a amd athlon 64 cpu

[wijcc]

what fsb should be set for a amd athlon 64 (newcastle) on the montherboard 100 or 133? I can't remember what cpu (either 2800+ or 3500+ i think, definately know that it is a athlon 64) i have in a machine i have at home, is there anyway of finding out which cpu it is without having to take the heatsink & fan off?
Thanks in advance guys

 

[Mongy2130]

I usually use this

http://www.cpuid.com/download/cpu-z-139.zip

 

[Justintime]

200MHz. You're thinking of Socket A chips which had many fsb speeds over its life, 100, 133, 166 and 200.