Does memory speed affect clock speed?

[TC]

Friend of mine just built a new system using the AMD XP 1600+ processor.

He transferred his old PC100 memory to the new system and booted as an AMD 1.1 Ghz. After playing with clock settings and what not, we still couldn't figure out why it was only reading as 1.1Ghz.

Later he installed PC133 memory and on boot up it registered as an AMD XP 1600 processor.

I thought only the FSB and clock frequency affected the actual speed of the processor. How does the memory fit in to the equation?

I'm grinding knuckles trying to understand how upgrading to PC133 memory had anything to do with how his MB recognized the processor.

Any insight into this would br greatly appreciated...

Thanks,

TC

[KenKun]

The new XP CPU is 266MHz DDR FSB only .. so when you use PC100 with it, that should be considered hardcore OCing for the memory and mostly will not handle it if you forced 133FSB through the jumper ..

I think the reason for the first wrong reading, that the CPU FSB itself were detected as 100MHz because of a jumper or BIOS setting that has to be changed ...

Regards

[MDdan]

KenKun,

Some quality PC100 can do 133 no problem, especially if you drop it to CAS3.

TC - CPU multiplier x FSB(memory speed) = CPU clock

so when that chip was at 1100, it was an 11 multiplier and a 100 mhz FSB (RAM @ 100 mhz)