I'm currently running PC4000 Ballistix which give a speed range (on my PC) of:
2.5, 2, 2, 5 up to 245Mhz
2.5, 3, 3, 6 up to 270Mhz and
3, 3, 3, 8 up to 295Mhz (I'm only able to use 2T at this setting)
I suspect that PC3200 will have a similar range but probably a drozen Mhz or lower.
Also read this thread
Ballistix