This is wierd Why is it like this on my Quicksilver?

[doucy2]

ok a have a 1.4ghz OWC Cpu for my quicksilver g4

it was underclocked at 1.33ghz and when i pulled it up it read 1.33ghz

but when i changed the jumper settings to 1.4ghz my system info reads 0mhz
like in the pic

what is causing this problem

any help would be great

 

[bousozoku]

Either it's not a stable speed or it's not a speed recognised by the system software.

 

[doucy2]

yea i did some research and found its not a recommended speed
so i moved it up to 1.47ghz and is works