Currently have 256 ram in Simm1.

Will be adding 512 ram.

Can I just put it in Simm2 ?

Or do I have to put 512 in Simm1 and move 256 to Simm2 ?

Thanks

Assuming that they are both the correct speed/type, which slot you choose shouldn't matter.

Thanks Curly.

The new 512 will be at 133.

Is there a way I find out what the current 256 runs at?

Memory speed?

Click here CPUID

And click on CPU-Z 1.44.1

HTH

Thanks DaBaAd