What memory is compatible with my NVIDIA nForce based motherboard?
You can find a list of tested and certified memory modules which have passed NVIDIA's compatibility tests on reference boards:
nForce3,4,5,6,7 note: Memory controller is located within the AMD Athlon64, Opteron CPU. Please see AMD memory support document below:
AMD Athlon supported memory
AMD Opteron supported memory
AMD Sempron supported memory
nForce Intel Edition supported memory
nForce 7 Intel Edition supported memory