I just got a pentium200mhz chip to replace a pentium100mhz in my computer/router. Its a Dell Optiplex and although Dell's website says it can take a pentium 200mhz when I opened the computer the pins where I'm supposed to put the jumpers on to clock it at 200mhz was never put on although the label is there. I just selected 166mhz and checked the bios...and it says its at 166mhz but i'm not totally sure that it is running at that speed. I read somewhere that classic pentiums are unlocked....is that true??