I have GA-K8N51GMF-9 M/B
it supports 4x1 GB DDR 400DIMM.
I have 4x1GB DDR11 PC667
and XP 64 I want to replace my 512 DDR 333
will the DDR11 667 work
and clock down to 400
Noel Clinton

As long as the type is the same (DDR) it should step down the speed properly.

thanks mike i have not yet installed the new ram but
now i am confident the new ram will work and I will then
upgrade my xp to 64 bit.
your response was a real help thanks again
Noel clinton